Title: PerformanceTraceFormatter formatMainThreadTrackSummary Content: # Top-down main thread summary ## All URLs: * 0: https://consent.cmp.oath.com/version/7.0.0/cmp.js * 1: https://securepubads.g.doubleclick.net/tag/js/gpt.js * 2: https://cdn.taboola.com/libtrc/yahooweb-network/loader.js * 3: https://s.yimg.com/aaq/f10d509c/d1irmdsmbztlvx.js * 4: https://s.yimg.com/du/ay/wnsrvbjmeprtfrnfx.js * 5: https://s.yimg.com/aaq/prebid/prebid-2.0.js * 6: https://securepubads.g.doubleclick.net/pagead/managed/js/gpt/m202503250101/pubads_impl.js * 7: https://news.yahoo.com/ * 8: https://www.googletagmanager.com/gtag/js?id=G-B40QGCQW3G * 9: https://s.yimg.com/aaq/benji/benji-2.2.99.js ## Call tree: 1;r-7065;Task;10.3;0;;18;; 2;r-9670;Task;32.5;0;;19;; 3;r-15016;Task;11.7;0.1;;20;; 4;r-18571;Task;23.4;0.3;;21;; 5;r-25964;Task;12.8;0.1;;22;; 6;r-27315;Task;14.1;0.1;;23;; 7;r-29582;Task;41;0.1;;24-26;; 8;r-39347;Task;87.7;0.1;;26;; 9;r-46082;Task;40.2;0;;27;; 10;r-55191;Task;10.4;0.1;;28;; 11;r-59836;Task;30.9;30.9;;;; 12;r-72507;Task;12.9;0;;29;; 13;r-74575;Task;23.3;0;;30;; 14;r-91872;Task;17.4;0.1;;31;; 15;r-94858;Task;10.2;0;;32;; 16;r-97269;Task;29.8;0.1;;33;; 17;r-100787;Task;24.7;0;;34;; 18;r-7070;Evaluate script;10.3;10.3;0;;; 19;r-9671;Timer fired;32.5;0;;35;; 20;r-15021;Evaluate script;11.6;1.3;1;36;; 21;r-18573;Evaluate script;23.1;11.6;2;37;; 22;r-25966;Evaluate script;12.7;2.6;3;38;; 23;r-27320;Evaluate script;14;1.5;4;39;; 24;r-29586;Evaluate script;27.1;5.9;5;40;; 25;r-34263;Event: load;13.9;0;;41;; 26;r-39348;Timer fired;87.6;1.9;;42;; 27;r-46084;Evaluate script;40.2;5.2;6;43-45;; 28;r-55192;Parse HTML;10.4;10.4;7;;; 29;r-72510;Evaluate script;12.8;12.8;8;;; 30;r-74576;Timer fired;23.3;0;;45;; 31;r-91873;Run microtasks;17.3;5.8;;46;; 32;r-94864;Run microtasks;10.2;0;;47;; 33;r-97270;Run microtasks;29.7;0.3;;48;; 34;r-100788;Timer fired;24.7;2.5;;49;; 35;r-9676;Function call;32.5;1.8;7;50;58;31 36;p-49575-15428179-2834-374;(anonymous);10.4;10.4;1;;0;0 37;r-18574;Compile script;11.5;11.5;2;;; 38;p-49575-15428179-3407-1094;(anonymous);10.1;;3;51;0;0 39;p-49575-15428179-3505-1162;(anonymous);12.5;12.5;4;;0;0 40;p-49575-15428179-3719-1230;(anonymous);21.2;1.2;5;52;0;0 41;r-34282;Run microtasks;13.8;0.2;;53;; 42;r-39351;Function call;85.7;0.5;3;54-56;0;97118 43;p-49575-15428179-5391-2767;(anonymous);14.9;;6;56;0;0 44;r-49156;Run microtasks;20.1;0.1;;57;; 45;r-74582;Function call;23.3;0.4;3;58;0;97118 46;p-49575-15428179-11417-6128;(anonymous);11.5;;2;59;0;566553 47;p-49575-15428179--1-802;(anonymous);10.1;;2;60;0;330643 48;p-49575-15428179-12694-3277;(anonymous);29.5;;3;61;0;51073 49;r-101251;Run microtasks;22.2;5.6;;62;; 50;p-49575-15428179-2409-265;(anonymous);30.6;;7;63;58;31 51;p-49575-15428179-3407-1095;apiVersionSuffix;10.1;10.1;3;;0;13 52;p-49575-15428179-3719-1231;(anonymous);20;8;5;64;4;214 53;p-49575-15428179-3889-1540;(anonymous);13.6;2.8;9;65;0;61837 54;p-49575-15428179-4266-1907;fg;74.2;;3;66;0;97118 55;p-49575-15428179--1-1907;fg;11;;3;67;0;97118 56;p-49575-15428179-5391-2768;(anonymous);14.9;4;6;68;0;9 57;p-49575-15428179-5508-3045;b;20;7.2;6;69;32;154420 58;p-49575-15428179-7577-1907;fg;22.9;;3;70;0;97118 59;p-49575-15428179-11417-6129;u;11.5;;2;71;0;329836 60;p-49575-15428179--1-6287;fillEllipsis;10.1;;2;72;0;205507 61;p-49575-15428179-12694-3331;(anonymous);29.5;;5;73;12;31379 62;p-49575-15428179-13253-3045;b;16.6;;6;74;32;154420 63;p-49575-15428179-2409-266;ready;30.6;;7;75;57;131534 64;p-49575-15428179-3781-1233;t;12;12;5;;11;4994 65;p-49575-15428179-3896-1547;_setConfig;10.8;;9;76;0;65310 66;p-49575-15428179-4266-1908;(anonymous);74.2;;9;77;0;58836 67;p-49575-15428179--1-1908;(anonymous);11;;9;78;0;58836 68;p-49575-15428179-5420-2783;(anonymous);10.9;10.9;6;;32;534645 69;p-49575-15428179-5508-3046;EB.next;12.7;;6;79;32;154125 70;p-49575-15428179-7577-4811;rC;22.9;;8;80;615;11 71;p-49575-15428179-11417-6130;(anonymous);11.5;;2;81;0;329857 72;p-49575-15428179--1-6288;fillNativeEllipsis;10.1;0;2;82;0;207253 73;p-49575-15428179-12694-6394;success;29.5;4.1;5;83;45;10416 74;p-49575-15428179-13253-3046;EB.next;16.6;2.5;6;84;32;154125 75;p-49575-15428179-2409-267;(anonymous);30.6;10.7;7;85;57;131546 76;p-49575-15428179-3896-1548;Z.cmd.push;10.8;;5;86;12;106129 77;p-49575-15428179-4266-1909;_requestBids;74.2;;9;87;0;67017 78;p-49575-15428179--1-1909;_requestBids;11;;9;88;0;67017 79;p-49575-15428179-5508-3047;CB;12.7;;6;89;32;153855 80;p-49575-15428179-7577-4812;pC;22.9;0.1;8;90-92;613;11 81;p-49575-15428179-11417-6131;u;11.5;;2;92;0;330978 82;p-49575-15428179--1-6291;computeStyles;10.1;10.1;2;;0;205949 83;p-49575-15428179--1-6485;onResponse;25.4;0.1;5;93;45;11700 84;p-49575-15428179-13253-3047;CB;14.1;;6;94;32;153855 85;p-49575-15428179--1-281;ge;19.9;1.2;7;95;57;159608 86;p-49575-15428179-3896-1549;(anonymous);10.8;;9;96;0;65404 87;p-49575-15428179-4266-1910;Z.cmd.push;74.2;;5;97;12;106129 88;p-49575-15428179--1-1910;Z.cmd.push;11;;5;98;12;106129 89;p-49575-15428179-5508-3048;(anonymous);12.7;0.8;6;99;32;53308 90;p-49575-15428179-7578-4819;mC;12;1.2;8;100;611;11 91;p-49575-15428179-7685-5087;config;10.7;0.5;8;101;602;23 92;p-49575-15428179-11417-6132;(anonymous);11.5;;2;102;0;330998 93;p-49575-15428179-12788-6496;(anonymous);25.3;0.1;5;103;12;130313 94;p-49575-15428179-13253-3058;(anonymous);14.1;2.3;6;104;32;299354 95;p-49575-15428179-2432-284;e.init;18.7;;7;105;57;139327 96;p-49575-15428179-3896-1550;v;10.8;;5;106;12;52598 97;p-49575-15428179-4266-1911;(anonymous);74.2;;9;107;0;67101 98;p-49575-15428179--1-1911;(anonymous);11;;9;108;0;67101 99;p-49575-15428179-5520-3068;PV.g;12;;6;109;32;300710 100;p-49575-15428179-7580-4824;tB;10.9;10.9;8;;593;11 101;p-49575-15428179-7688-5089;Sp.push;10.2;;8;110;410;150 102;p-49575-15428179-11417-6133;(anonymous);11.5;11.5;2;;0;566623 103;p-49575-15428179--1-6500;(anonymous);25.2;;5;111;12;16537 104;p-49575-15428179-13265-6900;i_.g;11.8;;6;112;32;507201 105;p-49575-15428179-2432-296;(anonymous);18.7;0.4;7;113;57;180286 106;p-49575-15428179-3896-1552;A;10.8;;5;114;12;53200 107;p-49575-15428179-4266-1912;(anonymous);74.2;;5;115;12;101262 108;p-49575-15428179--1-1912;(anonymous);11;;5;116;12;101262 109;p-49575-15428179-5520-3069;M.id;12;0.4;6;117;32;437499 110;p-49575-15428179-7688-5090;Sp.flush;10.2;;8;118;411;27 111;p-49575-15428179--1-6501;(anonymous);25.2;;5;119;12;16551 112;p-49575-15428179-13265-6901;sA;11.8;11.8;6;;32;144712 113;p-49575-15428179-2435-299;(anonymous);18.3;0.3;7;120;57;184601 114;p-49575-15428179-3896-1553;(anonymous);10.8;10.8;5;;12;53271 115;p-49575-15428179-4266-1913;y;74.2;;5;121;11;2772 116;p-49575-15428179--1-1913;y;11;;5;122;11;2772 117;p-49575-15428179-5523-3075;mt;11.6;1.5;6;123;32;103624 118;p-49575-15428179-7688-5094;Tp;10.2;;8;124;407;364 119;p-49575-15428179--1-6502;(anonymous);25.2;;5;125;12;16214 120;p-49575-15428179--1-301;(anonymous);18;8.4;7;126;57;187793 121;p-49575-15428179-4266-1914;p;74.2;;5;127;11;2913 122;p-49575-15428179--1-1914;p;11;;5;128;11;2913 123;p-49575-15428179-5534-3091;_.Xl;10.1;10.1;6;;32;61998 124;p-49575-15428179-7688-5095;Om;10.2;;8;129;383;1211 125;p-49575-15428179--1-6503;adapterDone;25.2;;5;130;12;38074 126;r-10293;Recalculate style;9.6;9.6;7;;57;187957 127;p-49575-15428179-4266-1915;(anonymous);74.2;;5;131;12;131446 128;p-49575-15428179--1-1915;(anonymous);11;;5;132;12;131446 129;p-49575-15428179-7688-5096;w;10.2;;8;133;409;10 130;p-49575-15428179--1-6504;finally;25.2;;5;134;12;132456 131;p-49575-15428179-4266-1916;measureHookTime;74.2;;5;135;12;129319 132;p-49575-15428179--1-1916;measureHookTime;11;;5;136;12;129319 133;p-49575-15428179-7688-5097;c;10.2;10.2;8;;782;618 134;p-49575-15428179--1-6505;then;25.2;;5;137;12;132201 135;p-49575-15428179-4266-1917;(anonymous);74.2;;5;138;12;131599 136;p-49575-15428179--1-1917;(anonymous);11;;5;139;12;131599 137;p-49575-15428179--1-6506;o;25.2;;5;140;12;131922 138;p-49575-15428179-4266-1918;(anonymous);74.2;;5;141;31;1765 139;p-49575-15428179--1-1918;(anonymous);11;;5;142;31;1765 140;p-49575-15428179--1-6507;(anonymous);25.2;;5;143;12;132252 141;p-49575-15428179-4266-1919;D;74.2;;5;144;31;1071 142;p-49575-15428179--1-1919;D;11;;5;145;31;1071 143;p-49575-15428179--1-6508;s;25.2;;5;146;12;132268 144;p-49575-15428179-4266-1920;iab;74.2;;5;147;31;223 145;p-49575-15428179--1-1920;iab;11;;5;148;31;223 146;p-49575-15428179--1-6509;(anonymous);25.2;;5;149;12;132484 147;p-49575-15428179-4266-1921;v;74.2;;5;150;14;1042 148;p-49575-15428179--1-1921;v;11;;5;151;14;1042 149;p-49575-15428179--1-6510;(anonymous);25.2;;5;152;12;38103 150;p-49575-15428179-4266-1922;o;74.2;;5;153;12;131922 151;p-49575-15428179--1-1922;o;11;;5;154;12;131922 152;p-49575-15428179--1-6511;T;25.2;;5;155;12;37576 153;p-49575-15428179-4266-1923;(anonymous);74.2;;5;156;14;1125 154;p-49575-15428179--1-1923;(anonymous);11;;5;157;14;1125 155;p-49575-15428179--1-6512;ae;25.2;0;5;158;12;35063 156;p-49575-15428179-4266-1924;window.__uspapi;74.2;;0;159;1;262214 157;p-49575-15428179--1-1924;window.__uspapi;11;;0;160;1;262214 158;p-49575-15428179--1-6513;oe;25.2;5.9;5;161;12;34322 159;p-49575-15428179-4266-1925;(anonymous);74.2;;5;162;14;937 160;p-49575-15428179--1-1925;(anonymous);11;;5;163;14;937 161;p-49575-15428179--1-6526;t.emit;19.2;;5;164;12;63485 162;p-49575-15428179-4266-1926;consentDataCallback;74.2;;5;165;31;311 163;p-49575-15428179--1-1926;consentDataCallback;11;;5;166;31;311 164;p-49575-15428179--1-6527;(anonymous);19.2;;5;167;12;63498 165;p-49575-15428179-4266-1927;h;74.2;;5;168;31;1943 166;p-49575-15428179--1-1927;h;11;;5;169;31;1943 167;p-49575-15428179--1-6528;(anonymous);19.2;2.7;5;170;12;63738 168;p-49575-15428179-4266-1928;o;74.2;;5;171;31;1101 169;p-49575-15428179--1-1928;o;11;;5;172;31;1101 170;p-49575-15428179-12812-6554;(anonymous);16.5;0.2;3;173;0;113503 171;p-49575-15428179-4266-1929;(anonymous);74.2;;5;174;31;1800 172;p-49575-15428179--1-1929;(anonymous);11;;5;175;31;1800 173;p-49575-15428179-12812-6555;d3..;16.4;;3;176;0;47634 174;p-49575-15428179-4266-1930;(anonymous);74.2;0.3;5;177;12;130313 175;p-49575-15428179--1-1930;(anonymous);11;;5;178;12;130313 176;p-49575-15428179-12812-6556;(anonymous);16.4;16.4;3;;0;43042 177;p-49575-15428179-4268-1932;p;74;;5;179;11;2913 178;p-49575-15428179--1-1932;p;11;;5;180;11;2913 179;p-49575-15428179-4268-1933;(anonymous);74;;5;181;12;131446 180;p-49575-15428179--1-1933;(anonymous);11;;5;182;12;131446 181;p-49575-15428179-4268-1934;measureHookTime;74;;5;183;12;129319 182;p-49575-15428179--1-1934;measureHookTime;11;;5;184;12;129319 183;p-49575-15428179-4268-1935;(anonymous);74;;5;185;12;131599 184;p-49575-15428179--1-1935;(anonymous);11;;5;186;12;131599 185;p-49575-15428179-4268-1936;(anonymous);74;;5;187;29;1841 186;p-49575-15428179--1-1936;(anonymous);11;;5;188;29;1841 187;p-49575-15428179-4268-1937;t;74;;5;189;29;1863 188;p-49575-15428179--1-1937;t;11;;5;190;29;1863 189;p-49575-15428179-4268-1938;(anonymous);74;;5;191;12;130313 190;p-49575-15428179--1-1938;(anonymous);11;;5;192;12;130313 191;p-49575-15428179-4268-1939;p;74;;5;193;11;2913 192;p-49575-15428179--1-1939;p;11;;5;194;11;2913 193;p-49575-15428179-4268-1940;(anonymous);74;;5;195;12;131446 194;p-49575-15428179--1-1940;(anonymous);11;;5;196;12;131446 195;p-49575-15428179-4268-1941;measureHookTime;74;;5;197;12;129319 196;p-49575-15428179--1-1941;measureHookTime;11;;5;198;12;129319 197;p-49575-15428179-4268-1942;(anonymous);74;;5;199;12;131599 198;p-49575-15428179--1-1942;(anonymous);11;;5;200;12;131599 199;p-49575-15428179-4268-1943;(anonymous);74;;5;201;30;4533 200;p-49575-15428179--1-1943;(anonymous);11;;5;202;30;4533 201;p-49575-15428179-4268-1944;n;74;;5;203;30;4555 202;p-49575-15428179--1-1944;n;11;;5;204;30;4555 203;p-49575-15428179-4268-1945;(anonymous);74;;5;205;12;130313 204;p-49575-15428179--1-1945;(anonymous);11;;5;206;12;130313 205;p-49575-15428179-4268-1946;p;74;;5;207;11;2913 206;p-49575-15428179--1-1946;p;11;;5;208;11;2913 207;p-49575-15428179-4268-1947;(anonymous);74;;5;209;12;131446 208;p-49575-15428179--1-1947;(anonymous);11;;5;210;12;131446 209;p-49575-15428179-4268-1948;measureHookTime;74;;5;211;12;129319 210;p-49575-15428179--1-1948;measureHookTime;11;;5;212;12;129319 211;p-49575-15428179-4268-1949;(anonymous);74;;5;213;12;131599 212;p-49575-15428179--1-1949;(anonymous);11;;5;214;12;131599 213;p-49575-15428179-4268-1950;(anonymous);74;;5;215;46;7785 214;p-49575-15428179--1-1950;(anonymous);11;;5;216;46;7785 215;p-49575-15428179-4268-1951;z;74;0.7;5;217;46;6013 216;p-49575-15428179--1-1951;z;11;;5;218;46;6013 217;p-49575-15428179-4273-1956;(anonymous);73.3;;5;219;12;130313 218;p-49575-15428179--1-1956;(anonymous);11;;5;220;12;130313 219;p-49575-15428179-4273-1957;p;73.3;;5;221;11;2913 220;p-49575-15428179--1-1957;p;11;;5;222;11;2913 221;p-49575-15428179-4273-1958;(anonymous);73.3;1.1;5;223;12;103253 222;p-49575-15428179--1-1958;(anonymous);11;;5;224;12;103253 223;p-49575-15428179-4300-1972;p;72.1;;5;225;11;2913 224;p-49575-15428179--1-1972;p;11;;5;226;11;2913 225;p-49575-15428179-4300-1973;(anonymous);72.1;;5;227;12;131446 226;p-49575-15428179--1-1973;(anonymous);11;;5;228;12;131446 227;p-49575-15428179-4300-1974;measureHookTime;72.1;;5;229;12;129319 228;p-49575-15428179--1-1974;measureHookTime;11;;5;230;12;129319 229;p-49575-15428179-4300-1975;(anonymous);72.1;;5;231;12;131599 230;p-49575-15428179--1-1975;(anonymous);11;;5;232;12;131599 231;p-49575-15428179-4300-1976;(anonymous);72.1;0.3;5;233;55;5329 232;p-49575-15428179--1-1976;(anonymous);11;;5;234;55;5329 233;p-49575-15428179-4304-1982;then;71.9;;5;235;12;132201 234;p-49575-15428179--1-1982;then;11;;5;236;12;132201 235;p-49575-15428179-4304-1983;o;71.9;;5;237;12;131922 236;p-49575-15428179--1-1983;o;11;;5;238;12;131922 237;p-49575-15428179-4304-1984;(anonymous);71.9;;5;239;12;132252 238;p-49575-15428179--1-1984;(anonymous);11;;5;240;12;132252 239;p-49575-15428179-4304-1985;s;71.9;;5;241;12;132268 240;p-49575-15428179--1-1985;s;11;;5;242;12;132268 241;p-49575-15428179-4304-1986;(anonymous);71.9;1;5;243;55;5475 242;p-49575-15428179--1-1986;(anonymous);11;;5;244;55;5475 243;p-49575-15428179--1-1999;(anonymous);70.9;;5;245;12;130313 244;p-49575-15428179--1-1999;(anonymous);11;;5;246;12;130313 245;p-49575-15428179--1-2000;p;70.9;;5;247;11;2913 246;p-49575-15428179--1-2000;p;11;;5;248;11;2913 247;p-49575-15428179--1-2001;o.;70.9;;5;249;11;3054 248;p-49575-15428179--1-2001;o.;11;;5;250;11;3054 249;p-49575-15428179--1-2002;(anonymous);70.9;1.9;5;251;12;100468 250;p-49575-15428179--1-2002;(anonymous);11;;5;252;12;100468 251;p-49575-15428179--1-2045;then;69;;5;253;12;132201 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303;p-49575-15428179--1-2100;p;10;;5;306;11;2913 304;p-49575-15428179--1-2392;T;38;38;5;;12;53984 305;p-49575-15428179--1-2392;T;11;1;5;307;12;53984 306;p-49575-15428179--1-2101;o.;10;;5;308;11;3054 307;p-49575-15428179-5170-2410;callBids;10.1;;5;309;12;21602 308;p-49575-15428179--1-2102;(anonymous);10;10;5;;12;12825 309;p-49575-15428179-5170-2411;(anonymous);10.1;10.1;5;;12;21665 IMPORTANT: Never show eventKey to the user. The following are markdown block(s) of code that ran in the page, each representing a separate function. and marks the exact function declaration, and everything outside that is provided for additional context. Comments at the end of each line indicate the runtime performance cost of that code. Do not show the user the function markers or the additional context. Here are 3 relevant functions: (anonymous) @ https://s.yimg.com/aaq/prebid/prebid-2.0.js:12:53984. With added context, chunk is from 9:0 to 18:0 ``` // context ... () => { /* some code from https://s.yimg.com/aaq/prebid/prebid-2.0.js... */ } // context ... ``` (anonymous) @ https://s.yimg.com/aaq/f10d509c/d1irmdsmbztlvx.js:0:43042. With added context, chunk is from 0:0 to 6:0 ``` // context ... () => { /* some code from https://s.yimg.com/aaq/f10d509c/d1irmdsmbztlvx.js... */ } // context ... ``` (anonymous) @ https://s.yimg.com/aaq/prebid/prebid-2.0.js:12:15854. With added context, chunk is from 9:0 to 18:0 ``` // context ... () => { /* some code from https://s.yimg.com/aaq/prebid/prebid-2.0.js... */ } // context ... ``` # Bottom-up main thread summary This is the bottom-up summary for the entire trace. Only the top 20 activities (sorted by self time) are shown. An activity is all the aggregated time spent on the same type of work. For example, it can be all the time spent in a specific JavaScript function, or all the time spent in a specific browser rendering stage (like layout, v8 compile, parsing html). "Self time" represents the aggregated time spent directly in an activity, across all occurrences. "Total time" represents the aggregated time spent in an activity or any of its children. - self: 148 ms, total: 153 ms, source: Compile code - self: 71 ms, total: 772 ms, source: Task - self: 49 ms, total: 55 ms, source: Compile script - self: 49 ms, total: 61 ms, source: setTimeout - self: 31 ms, total: 31 ms, source: Layout (url: https://news.yahoo.com/, line: 57, column: 187957) - self: 31 ms, total: 31 ms, source: Recalculate style (url: https://news.yahoo.com/, line: 57, column: 187957) - self: 29 ms, total: 32 ms, source: clearTimeout - self: 27 ms, total: 50 ms, source: Parse HTML - self: 18 ms, total: 19 ms, source: aC (url: https://s.yimg.com/aaq/f10d509c/d1irmdsmbztlvx.js, line: 0, column: 19068) - self: 18 ms, total: 186 ms, source: (anonymous) (url: https://s.yimg.com/aaq/prebid/prebid-2.0.js, line: 5, column: 1) - self: 16 ms, total: 226 ms, source: Function call - self: 12 ms, total: 163 ms, source: (anonymous) (url: https://s.yimg.com/aaq/f10d509c/d1irmdsmbztlvx.js, line: 0, column: 0) - self: 12 ms, total: 83 ms, source: (anonymous) (url: https://cdn.taboola.com/libtrc/yahooweb-network/loader.js, line: 0, column: 9) - self: 11 ms, total: 12 ms, source: fetch - self: 11 ms, total: 12 ms, source: evaluate - self: 10 ms, total: 212 ms, source: Run microtasks - self: 9 ms, total: 19 ms, source: (anonymous) (url: https://s.yimg.com/du/ay/wnsrvbjmeprtfrnfx.js, line: 0, column: 0) - self: 9 ms, total: 10 ms, source: Minor GC - self: 8 ms, total: 226 ms, source: Evaluate script - self: 7 ms, total: 109 ms, source: n (url: https://s.yimg.com/aaq/prebid/prebid-2.0.js, line: 11, column: 4263) # Third parties - name: Yahoo!, main thread time: 214 ms, network transfer size: 2.4 MB - name: Taboola, main thread time: 41 ms, network transfer size: 391.7 kB - name: Google/Doubleclick Ads, main thread time: 41 ms, network transfer size: 225.7 kB - name: Google Tag Manager, main thread time: 19 ms, network transfer size: 123.8 kB - name: AOL / Oath / Verizon Media, main thread time: 5 ms, network transfer size: 42.3 kB # Related insights Here are all the insights that contain some related event from the main thread in the given range. - ThirdParties: Send request (eventKey: r-3382, ts: 157423742399), Receive response (eventKey: r-7053, ts: 157423772340), Receive data (eventKey: r-7054, ts: 157423772355), Receive data (eventKey: r-7055, ts: 157423772357), Receive data (eventKey: r-7056, ts: 157423772358) === end content Title: PerformanceTraceFormatter formatNetworkTrackSummary Content: # Network requests summary Network requests data: allUrls = [0: https://news.yahoo.com/, 1: https://s.yimg.com/cv/apiv2/ngy-fonts/YahooSans-VF-Web.woff2, 2: https://s.yimg.com/aaq/wf/wf-loader-2.7.21-modern.js, 3: https://consent.cmp.oath.com/version/7.0.0/cmp.js, 4: https://s.yimg.com/oa/consent.js, 5: https://s.yimg.com/aaq/fp/js/tdv2-wafer-utils.customErrorHandler.bcda778b736c3a054af62f437b536e78.js, 6: https://s.yimg.com/aaq/scp/js/fpDesktop.46ec7cd52ee9f5c1236b0dea5072690a.js, 7: https://s.yimg.com/aaq/benji/benji-2.2.99.js, 8: https://s.yimg.com/aaq/wf/wf-caas-1.36.6-modern.js, 9: https://s.yimg.com/aaq/wf/wf-toggle-1.15.4-modern.js, 10: https://s.yimg.com/aaq/fp/js/react-wafer-featurebar.custom.modern.12732500bc8e47693f0d777bbe88001c.js, 11: https://s.yimg.com/aaq/wf/wf-bind-1.1.3-modern.js, 12: https://s.yimg.com/aaq/wf/wf-text-1.2.0-modern.js, 13: https://s.yimg.com/aaq/wf/wf-video-3.2.2-modern.js, 14: https://s.yimg.com/aaq/wf/wf-image-1.4.0-modern.js, 15: https://s.yimg.com/aaq/wf/wf-rapid-1.10.9-modern.js, 16: https://s.yimg.com/aaq/wf/wf-action-1.8.1-modern.js, 17: https://s.yimg.com/aaq/wf/wf-template-1.4.3-modern.js, 18: https://s.yimg.com/aaq/wf/wf-menu-1.3.5-modern.js, 19: https://s.yimg.com/aaq/wf/wf-fetch-1.19.1-modern.js, 20: https://s.yimg.com/aaq/wf/wf-beacon-1.3.4-modern.js, 21: https://s.yimg.com/aaq/wf/wf-benji-1.2.0-modern.js, 22: https://s.yimg.com/aaq/wf/wf-clipboard-copy-1.0.2-modern.js, 23: https://s.yimg.com/aaq/wf/wf-form-1.34.5-modern.js, 24: https://s.yimg.com/aaq/wf/wf-countdown-1.2.5-modern.js, 25: https://s.yimg.com/aaq/wf/wf-scrollview-2.23.3-modern.js, 26: https://s.yimg.com/aaq/wf/wf-lightbox-1.10.6-modern.js, 27: https://s.yimg.com/aaq/wf/wf-native-da-1.0.5-modern.js, 28: https://s.yimg.com/aaq/fp/js/react-wafer-stream.custom.modern.1ed4fe71b1fc647ddbf37a7050944309.js, 29: https://s.yimg.com/aaq/wf/wf-autocomplete-1.31.8-modern.js, 30: https://s.yimg.com/aaq/wf/wf-geolocation-1.3.0-modern.js, 31: https://s.yimg.com/aaq/wf/wf-sticky-1.2.6-modern.js, 32: https://s.yimg.com/aaq/c/25fa214.caas-news_web.min.js, 33: https://news.yahoo.com/info/p.gif?apptype=default&beaconType=pageRenderStart&code=pageRender&bucket=ushnel-ibv2-ctrl%2CCurrentlyDesktopUH3Test1-updated%2Cusnel-batchconfig-ctrl%2Cseamless&device=desktop&intl=us&rid=1oa3lh9juean4&site=news&t=1743203044494, 34: https://s.yimg.com/aaq/f10d509c/d1irmdsmbztlvx.js, 35: https://noa.yahoo.com/p?s=1197800621&t=1743203044438&_I=&_AO=0&_NOL=0&etrg=backgroundPost&outcm=gamDebug&src=unknown&site=news&partner=none&lang=en-US®ion=US&device=desktop&colo=gq1&bucket=ushnel-ibv2-ctrl%2CCurrentlyDesktopUH3Test1-updated%2Cusnel-batchconfig-ctrl%2Cseamless%2Cdmi_consent_false&rid=1oa3lh9juean4&limitedAds=false&NPA=false&pd=unknown&pt=unknown&usercountry=US&benjiVersion=2.2.99&prebidVersion=unknown&yahooPrebidVersion=unknown&type=SIGNALS_SESSION_START, 36: https://signal-service.pbs.yahoo.com/v1/signal/refresh, 37: https://securepubads.g.doubleclick.net/tag/js/gpt.js, 38: https://noa.yahoo.com/p?s=1197800621&t=1743203044440&_I=&_AO=0&_NOL=0&etrg=backgroundPost&outcm=gamDebug&src=unknown&site=news&partner=none&lang=en-US®ion=US&device=desktop&colo=gq1&bucket=ushnel-ibv2-ctrl%2CCurrentlyDesktopUH3Test1-updated%2Cusnel-batchconfig-ctrl%2Cseamless%2Cdmi_consent_false&rid=1oa3lh9juean4&limitedAds=false&NPA=false&pd=unknown&pt=unknown&usercountry=US&benjiVersion=2.2.99&prebidVersion=unknown&yahooPrebidVersion=unknown&type=PREBID_SESSION_START, 39: https://s.yimg.com/du/ay/wnsrvbjmeprtfrnfx.js, 40: https://s.yimg.com/aaq/prebid/prebid-2.0.js, 41: https://s.yimg.com/eh/prebid-config/bp-news.json, 42: https://noa.yahoo.com/p?s=1197800621&t=1743203044441&_I=&_AO=0&_NOL=0&etrg=backgroundPost&outcm=taboolaDebug&src=unknown&site=news&partner=none&lang=en-US®ion=US&device=desktop&colo=gq1&bucket=ushnel-ibv2-ctrl%2CCurrentlyDesktopUH3Test1-updated%2Cusnel-batchconfig-ctrl%2Cseamless%2Cdmi_consent_false&rid=1oa3lh9juean4&limitedAds=false&NPA=false&pd=unknown&pt=home&usercountry=US&benjiVersion=2.2.99&prebidVersion=unknown&yahooPrebidVersion=unknown&type=TABOOLA_SESSION_START, 43: https://cdn.taboola.com/libtrc/yahooweb-network/loader.js, 44: https://opus.analytics.yahoo.com/tag/opus.js, 45: https://noa.yahoo.com/p?s=1197800621&t=1743203044441&_I=&_AO=0&_NOL=0&etrg=backgroundPost&outcm=gamDebug&src=unknown&site=news&partner=none&lang=en-US®ion=US&device=desktop&colo=gq1&bucket=ushnel-ibv2-ctrl%2CCurrentlyDesktopUH3Test1-updated%2Cusnel-batchconfig-ctrl%2Cseamless%2Cdmi_consent_false&rid=1oa3lh9juean4&limitedAds=false&NPA=false&pd=unknown&pt=home&usercountry=US&benjiVersion=2.2.99&prebidVersion=unknown&yahooPrebidVersion=unknown&type=BENJI_SESSION_START] 0;s-2116;0.4 ms;3 ms;393 ms;493 ms;492 ms;177 ms;100 ms;200;text/html;VeryHigh;VeryHigh;VeryHigh;f;h2;f;;[];[strict-transport-security: max-age=31536000|content-security-policy: frame-ancestors 'self' https://*.builtbygirls.com https://*.rivals.com https://*.engadget.com https://*.intheknow.com https://*.autoblog.com https://*.techcrunch.com https://*.yahoo.com https://*.aol.com https://*.huffingtonpost.com https://*.oath.com https://*.search.yahoo.com https://*.pnr.ouryahoo.com https://pnr.ouryahoo.com https://*.search.aol.com https://*.search.huffpost.com https://*.onesearch.com https://*.verizonmedia.com https://*.publishing.oath.com https://*.autoblog.com; sandbox allow-forms allow-same-origin allow-scripts allow-popups allow-popups-to-escape-sandbox allow-presentation; report-uri https://csp.yahoo.com/beacon/csp?src=ats&site=news®ion=US&lang=en-US&device=desktop&yrid=1oa3lh9juean4&partner=;|content-encoding: gzip|x-envoy-upstream-service-time: |age: 0|expect-ct: max-age=31536000, report-uri="http://csp.yahoo.com/beacon/csp?src=yahoocom-expect-ct-report-only|referrer-policy: |x-content-type-options: nosniff|x-xss-protection: 1; mode=block|date: Fri, 28 Mar 2025 23:04:04 GMT|content-type: text/html; charset=utf-8|vary: Accept-Encoding|server: ATS|x-frame-options: SAMEORIGIN] 1;s-2256;220 ms;224 ms;306 ms;340 ms;120 ms;54 ms;34 ms;200;font/woff2;High;High;High;f;h2;f;0;[];[etag: |age: 1586039|date: Mon, 10 Mar 2025 14:30:06 GMT|last-modified: Mon, 30 Nov 2020 20:20:29 GMT|content-type: font/woff2|vary: Origin|x-amz-id-2: |strict-transport-security: max-age=31536000|cache-control: max-age=31536000|ats-carp-promotion: |referrer-policy: |x-amz-request-id: |accept-ranges: bytes|access-control-allow-origin: *|content-length: |server: ATS|x-amz-server-side-encryption: ] 2;s-3277;253 ms;257 ms;260 ms;261 ms;8 ms;2 ms;0.8 ms;200;application/javascript;Low;Low;Low;f;h2;t;0;[];[content-encoding: gzip|etag: |age: 1678049|x-amz-version-id: |date: Sun, 09 Mar 2025 12:55:21 GMT|content-type: application/javascript|last-modified: Mon, 16 Sep 2024 04:28:36 GMT|vary: Origin, Accept-Encoding|x-amz-id-2: |strict-transport-security: max-age=31536000|cache-control: public,max-age=31536000|ats-carp-promotion: |referrer-policy: |x-amz-request-id: |accept-ranges: bytes|content-length: |server: ATS|x-amz-server-side-encryption: ] 3;s-3382;254 ms;258 ms;282 ms;284 ms;30 ms;2 ms;2 ms;200;application/javascript;Low;Low;Low;f;h2;f;0;[];[x-amz-cf-pop: |vary: 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ma=2592000,h3-29=":443"; ma=2592000|p3p: |date: Fri, 28 Mar 2025 23:04:04 GMT|content-type: text/javascript; charset=UTF-8|vary: Accept-Encoding|content-disposition: attachment; filename="f.txt"|cache-control: private, max-age=900, stale-while-revalidate=3600|timing-allow-origin: *|cross-origin-resource-policy: |access-control-allow-origin: *|content-length: |x-xss-protection: 0|server: cafe] 38;s-6258;272 ms;273 ms;301 ms;307 ms;35 ms;0.9 ms;6 ms;200;image/gif;VeryLow;VeryLow;VeryLow;f;h2;f;0,7;[];[strict-transport-security: max-age=31536000|cache-control: no-cache, no-store, private|pragma: no-cache|x-envoy-upstream-service-time: |age: 0|p3p: |content-length: |date: Fri, 28 Mar 2025 23:04:04 GMT|content-type: image/gif|server: ATS] 39;s-6273;272 ms;276 ms;338 ms;341 ms;69 ms;2 ms;3 ms;200;application/javascript;Low;Low;Low;f;h2;f;0,7;[];[content-encoding: gzip|etag: |age: 304|date: Fri, 28 Mar 2025 22:59:01 GMT|last-modified: Mon, 20 Jan 2025 00:24:25 GMT|vary: Origin, Accept-Encoding|content-type: application/javascript|x-amz-id-2: |strict-transport-security: max-age=31536000|cache-control: public,max-age=600|ats-carp-promotion: |referrer-policy: |x-amz-request-id: |accept-ranges: bytes|content-length: |server: ATS|x-amz-server-side-encryption: ] 40;s-6279;272 ms;276 ms;369 ms;440 ms;168 ms;31 ms;71 ms;200;application/javascript;Low;Low;Low;f;h2;f;0,7;[];[content-encoding: gzip|x-amz-version-id: |etag: |age: 1207|date: Fri, 28 Mar 2025 22:43:58 GMT|last-modified: Thu, 27 Mar 2025 19:05:16 GMT|vary: Origin, Accept-Encoding|content-type: application/javascript|x-amz-id-2: |strict-transport-security: max-age=31536000|cache-control: public,max-age=1800|ats-carp-promotion: |referrer-policy: |x-amz-request-id: |accept-ranges: bytes|content-length: |server: ATS|x-amz-server-side-encryption: ] 41;s-6293;272 ms;273 ms;307 ms;350 ms;77 ms;0.5 ms;43 ms;200;application/json;High;High;High;f;h2;f;0,7;[];[access-control-max-age: 3000|access-control-expose-headers: Access-Control-Allow-Origin|content-encoding: gzip|etag: |age: 203|access-control-allow-methods: GET, HEAD|date: Fri, 28 Mar 2025 23:00:42 GMT|last-modified: Fri, 28 Mar 2025 21:13:20 GMT|vary: Origin, Access-Control-Request-Headers, Access-Control-Request-Method, Accept-Encoding|content-type: application/json|x-amz-id-2: |strict-transport-security: max-age=31536000|cache-control: public,max-age=86400|ats-carp-promotion: |referrer-policy: |x-amz-request-id: |accept-ranges: bytes|access-control-allow-origin: *|content-length: |server: ATS|x-amz-server-side-encryption: ] 42;s-6341;273 ms;274 ms;301 ms;307 ms;34 ms;0.8 ms;6 ms;200;image/gif;VeryLow;VeryLow;VeryLow;f;h2;f;0,7;[];[strict-transport-security: max-age=31536000|cache-control: no-cache, no-store, private|pragma: no-cache|x-envoy-upstream-service-time: |age: 0|p3p: |content-length: |date: Fri, 28 Mar 2025 23:04:04 GMT|content-type: image/gif|server: ATS] 43;s-6352;273 ms;276 ms;322 ms;341 ms;67 ms;6 ms;18 ms;200;application/javascript;Low;Low;Low;f;h2;f;0,7;[];[content-encoding: gzip|etag: |x-amz-version-id: |age: 63|x-cache: |date: Fri, 28 Mar 2025 23:04:04 GMT|last-modified: Thu, 27 Mar 2025 14:46:52 GMT|x-served-by: |x-cache-hits: |content-type: application/javascript; charset=utf-8|x-amz-id-2: |vary: Accept-Encoding|x-amz-replication-status: |cache-control: private,max-age=14401|x-timer: |via: 1.1 varnish|x-amz-request-id: |accept-ranges: bytes|access-control-allow-origin: *|abp: |content-length: |server: AmazonS3|x-amz-server-side-encryption: ] 44;s-6368;274 ms;275 ms;296 ms;300 ms;26 ms;0.4 ms;3 ms;200;application/javascript;Low;Low;Low;f;h2;f;0,7;[];[x-amz-cf-pop: |content-security-policy: default-src https:; script-src https: 'unsafe-inline'; style-src https: 'unsafe-inline'|content-encoding: gzip|etag: |age: 54075|via: 1.1 7e87179efaa9e3c316bd3d3a74cfded8.cloudfront.net (CloudFront)|x-cache: |x-amz-cf-id: |date: Fri, 28 Mar 2025 08:02:50 GMT|content-type: application/javascript|vary: Accept-Encoding|server: AmazonS3|last-modified: Wed, 12 Mar 2025 14:48:50 GMT|x-amz-server-side-encryption: ] 45;s-6379;274 ms;276 ms;305 ms;340 ms;66 ms;0.3 ms;34 ms;200;image/gif;VeryLow;VeryLow;VeryLow;f;h2;f;0,7;[];[strict-transport-security: max-age=31536000|cache-control: no-cache, no-store, private|pragma: no-cache|x-envoy-upstream-service-time: |age: 0|p3p: |content-length: |date: Fri, 28 Mar 2025 23:04:04 GMT|content-type: image/gif|server: ATS] # Related insights Here are all the insights that contain some related request from the given range. - NetworkDependencyTree: news.yahoo.com/ (news.yahoo.com) (eventKey: s-2116, ts: 157423489126) - DocumentLatency: news.yahoo.com/ (news.yahoo.com) (eventKey: s-2116, ts: 157423489126) - ThirdParties: cmp.js (consent.cmp.oath.com) (eventKey: s-3382, ts: 157423742399), gpt.js (securepubads.g.doubleclick.net) (eventKey: s-6244, ts: 157423760529), loader.js (cdn.taboola.com) (eventKey: s-6352, ts: 157423761978) - Cache: prebid-2.0.js (s.yimg.com) (eventKey: s-6279, ts: 157423760925), cmp.js (consent.cmp.oath.com) (eventKey: s-3382, ts: 157423742399), d1irmdsmbztlvx.js (s.yimg.com) (eventKey: s-6185, ts: 157423759200), consent.js (s.yimg.com) (eventKey: s-3384, ts: 157423742450), wnsrvbjmeprtfrnfx.js (s.yimg.com) (eventKey: s-6273, ts: 157423760794) - LegacyJavaScript: benji-2.2.99.js (s.yimg.com) (eventKey: s-3387, ts: 157423742567), 25fa214.caas-news_web.min.js (s.yimg.com) (eventKey: s-3412, ts: 157423743431), wnsrvbjmeprtfrnfx.js (s.yimg.com) (eventKey: s-6273, ts: 157423760794), consent.js (s.yimg.com) (eventKey: s-3384, ts: 157423742450), news.yahoo.com/ (news.yahoo.com) (eventKey: s-2116, ts: 157423489126) === end content Title: PerformanceTraceFormatter formatTraceSummary web-dev.json.gz Content: URL: https://web.dev/cls/ Trace bounds: {min: 1020034823047, max: 1020036087961} CPU throttling: none Network throttling: none # Available insight sets The following is a list of insight sets. An insight set covers a specific part of the trace, split by navigations. The insights within each insight set are specific to that part of the trace. Be sure to consider the insight set id and bounds when calling functions. If no specific insight set or navigation is mentioned, assume the user is referring to the first one. ## insight set id: NAVIGATION_0 URL: https://web.dev/cls/ Bounds: {min: 1020034834921, max: 1020036087961} Metrics (lab / observed): - LCP: 118 ms, event: (eventKey: r-1802, ts: 1020034953358), nodeId: 209 - LCP breakdown: - TTFB: 31 ms, bounds: {min: 1020034834921, max: 1020034866264} - Render delay: 87 ms, bounds: {min: 1020034866264, max: 1020034953358} - CLS: 0.00 Metrics (field / real users): n/a – no data for this page in CrUX Available insights: - insight name: LCPBreakdown description: Each [subpart has specific improvement strategies](https://developer.chrome.com/docs/performance/insights/lcp-breakdown). Ideally, most of the LCP time should be spent on loading the resources, not within delays. relevant trace bounds: {min: 1020034834921, max: 1020034953358} example question: Help me optimize my LCP score example question: Which LCP phase was most problematic? example question: What can I do to reduce the LCP time for this page load? - insight name: DocumentLatency description: Your first network request is the most important. [Reduce its latency](https://developer.chrome.com/docs/performance/insights/document-latency) by avoiding redirects, ensuring a fast server response, and enabling text compression. relevant trace bounds: {min: 1020034836013, max: 1020034892491} estimated metric savings: FCP 0 ms, LCP 0 ms estimated wasted bytes: 52.1 kB example question: How do I decrease the initial loading time of my page? example question: Did anything slow down the request for this document? - insight name: ThirdParties description: 3rd party code can significantly impact load performance. [Reduce and defer loading of 3rd party code](https://developer.chrome.com/docs/performance/insights/third-parties) to prioritize your page's content. relevant trace bounds: {min: 1020034871372, max: 1020035171789} example question: Which third parties are having the largest impact on my page performance? === end content Title: PerformanceTraceFormatter formatTraceSummary yahoo-news.json.gz Content: URL: https://news.yahoo.com/ Trace bounds: {min: 157423484442, max: 157427277166} CPU throttling: none Network throttling: none # Available insight sets The following is a list of insight sets. An insight set covers a specific part of the trace, split by navigations. The insights within each insight set are specific to that part of the trace. Be sure to consider the insight set id and bounds when calling functions. If no specific insight set or navigation is mentioned, assume the user is referring to the first one. ## insight set id: NAVIGATION_0 URL: https://news.yahoo.com/ Bounds: {min: 157423488682, max: 157427277166} Metrics (lab / observed): - LCP: 464 ms, event: (eventKey: r-33210, ts: 157423953162), nodeId: 8 - LCP breakdown: - TTFB: 216 ms, bounds: {min: 157423488682, max: 157423704371} - Load delay: 90 ms, bounds: {min: 157423704371, max: 157423794709} - Load duration: 64 ms, bounds: {min: 157423794709, max: 157423858674} - Render delay: 94 ms, bounds: {min: 157423858674, max: 157423953162} - CLS: 0.04, event: (eventKey: s--1, ts: 157425604232) Metrics (field / real users): n/a – no data for this page in CrUX Available insights: - insight name: LCPBreakdown description: Each [subpart has specific improvement strategies](https://developer.chrome.com/docs/performance/insights/lcp-breakdown). Ideally, most of the LCP time should be spent on loading the resources, not within delays. relevant trace bounds: {min: 157423488682, max: 157423953162} example question: Help me optimize my LCP score example question: Which LCP phase was most problematic? example question: What can I do to reduce the LCP time for this page load? - insight name: CLSCulprits description: Layout shifts occur when elements move absent any user interaction. [Investigate the causes of layout shifts](https://developer.chrome.com/docs/performance/insights/cls-culprit), such as elements being added, removed, or their fonts changing as the page loads. relevant trace bounds: {min: 157425604232, max: 157426760958} example question: Help me optimize my CLS score example question: How can I prevent layout shifts on this page? - insight name: NetworkDependencyTree description: [Avoid chaining critical requests](https://developer.chrome.com/docs/performance/insights/network-dependency-tree) by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load. relevant trace bounds: {min: 157423489126, max: 157426527569} example question: How do I optimize my network dependency tree? - insight name: ImageDelivery description: Reducing the download time of images can improve the perceived load time of the page and LCP. [Learn more about optimizing image size](https://developer.chrome.com/docs/performance/insights/image-delivery) relevant trace bounds: {min: 157423794709, max: 157424082831} estimated metric savings: FCP 0 ms, LCP 0 ms estimated wasted bytes: 97.8 kB example question: What should I do to improve and optimize the time taken to fetch and display images on the page? example question: Are all images on my site optimized? - insight name: FontDisplay description: Consider setting [font-display](https://developer.chrome.com/docs/performance/insights/font-display) to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with [font metric overrides](https://developer.chrome.com/blog/font-fallbacks). relevant trace bounds: {min: 157425661196, max: 157425696387} estimated metric savings: FCP 20 ms example question: How can I update my CSS to avoid layout shifts caused by incorrect `font-display` properties? - insight name: ThirdParties description: 3rd party code can significantly impact load performance. [Reduce and defer loading of 3rd party code](https://developer.chrome.com/docs/performance/insights/third-parties) to prioritize your page's content. relevant trace bounds: {min: 157423742399, max: 157427277086} example question: Which third parties are having the largest impact on my page performance? - insight name: Cache description: A long cache lifetime can speed up repeat visits to your page. [Learn more about caching](https://developer.chrome.com/docs/performance/insights/cache). relevant trace bounds: {min: 157423742399, max: 157426980482} estimated metric savings: FCP 0 ms, LCP 0 ms estimated wasted bytes: 847.4 kB example question: What caching strategies can I apply to improve my page performance? - insight name: LegacyJavaScript description: Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile [Baseline](https://web.dev/articles/baseline-and-polyfills) features, unless you know you must support older browsers. [Learn why most sites can deploy ES6+ code without transpiling](https://developer.chrome.com/docs/performance/insights/legacy-javascript) relevant trace bounds: {min: 157423489126, max: 157426132225} estimated metric savings: FCP 0 ms, LCP 0 ms estimated wasted bytes: 126.9 kB example question: Is my site polyfilling modern JavaScript features? example question: How can I reduce the amount of legacy JavaScript on my page? === end content Title: PerformanceTraceFormatter formatTraceSummary multiple-navigations-render-blocking.json.gz Content: URL: http://localhost:8080/render-blocking Trace bounds: {min: 171605647473, max: 171616667355} CPU throttling: 1x Network throttling: Fast 3G # Available insight sets The following is a list of insight sets. An insight set covers a specific part of the trace, split by navigations. The insights within each insight set are specific to that part of the trace. Be sure to consider the insight set id and bounds when calling functions. If no specific insight set or navigation is mentioned, assume the user is referring to the first one. ## insight set id: NAVIGATION_0 URL: http://localhost:8080/render-blocking Bounds: {min: 171607579779, max: 171613750571} Metrics (lab / observed): - LCP: 1317 ms, event: (eventKey: r-6686, ts: 171608897210), nodeId: 10 - LCP breakdown: - TTFB: 10 ms, bounds: {min: 171607579779, max: 171607589981.99997} - Render delay: 1,307 ms, bounds: {min: 171607589981.99997, max: 171608897210} - CLS: 0.00 Metrics (field / real users): n/a – no data for this page in CrUX Available insights: - insight name: LCPBreakdown description: Each [subpart has specific improvement strategies](https://developer.chrome.com/docs/performance/insights/lcp-breakdown). Ideally, most of the LCP time should be spent on loading the resources, not within delays. relevant trace bounds: {min: 171607579779, max: 171608897210} example question: Help me optimize my LCP score example question: Which LCP phase was most problematic? example question: What can I do to reduce the LCP time for this page load? - insight name: RenderBlocking description: Requests are blocking the page's initial render, which may delay LCP. [Deferring or inlining](https://developer.chrome.com/docs/performance/insights/render-blocking) can move these network requests out of the critical path. relevant trace bounds: {min: 171608170438, max: 171608877165} example question: Show me the most impactful render blocking requests that I should focus on example question: How can I reduce the number of render blocking requests? ## insight set id: NAVIGATION_1 URL: http://localhost:8080/render-blocking Bounds: {min: 171613750571, max: 171616667355} Metrics (lab / observed): - LCP: 1310 ms, event: (eventKey: r-15639, ts: 171615060776), nodeId: 18 - LCP breakdown: - TTFB: 3 ms, bounds: {min: 171613750571, max: 171613753188} - Render delay: 1,308 ms, bounds: {min: 171613753188, max: 171615060776} - CLS: 0.00 Metrics (field / real users): n/a – no data for this page in CrUX Available insights: - insight name: LCPBreakdown description: Each [subpart has specific improvement strategies](https://developer.chrome.com/docs/performance/insights/lcp-breakdown). Ideally, most of the LCP time should be spent on loading the resources, not within delays. relevant trace bounds: {min: 171613750571, max: 171615060776} example question: Help me optimize my LCP score example question: Which LCP phase was most problematic? example question: What can I do to reduce the LCP time for this page load? - insight name: RenderBlocking description: Requests are blocking the page's initial render, which may delay LCP. [Deferring or inlining](https://developer.chrome.com/docs/performance/insights/render-blocking) can move these network requests out of the critical path. relevant trace bounds: {min: 171614330544, max: 171615043224} example question: Show me the most impactful render blocking requests that I should focus on example question: How can I reduce the number of render blocking requests? === end content Title: PerformanceTraceFormatter formatTraceSummary deals with CrUX manager errors Content: URL: http://localhost/image-delivery-cases.html Trace bounds: {min: 59728641874, max: 59734400108} CPU throttling: 1x Network throttling: No throttling # Available insight sets The following is a list of insight sets. An insight set covers a specific part of the trace, split by navigations. The insights within each insight set are specific to that part of the trace. Be sure to consider the insight set id and bounds when calling functions. If no specific insight set or navigation is mentioned, assume the user is referring to the first one. ## insight set id: NAVIGATION_0 URL: http://localhost/image-delivery-cases.html Bounds: {min: 59728649746, max: 59734400108} Metrics (lab / observed): - LCP: 663 ms, event: (eventKey: r-14753, ts: 59729312744), nodeId: 12 - LCP breakdown: - TTFB: 7 ms, bounds: {min: 59728649746, max: 59728656735} - Load delay: 46 ms, bounds: {min: 59728656735, max: 59728702313} - Load duration: 506 ms, bounds: {min: 59728702313, max: 59729208600} - Render delay: 104 ms, bounds: {min: 59729208600, max: 59729312744} - CLS: 0.31, event: (eventKey: s--1, ts: 59729100192) Metrics (field / real users): n/a – no data for this page in CrUX Available insights: - insight name: Cache description: A long cache lifetime can speed up repeat visits to your page. [Learn more about caching](https://developer.chrome.com/docs/performance/insights/cache). relevant trace bounds: {min: 59728702014, max: 59728867430} estimated metric savings: FCP 0 ms, LCP 150 ms estimated wasted bytes: 971.5 kB example question: What caching strategies can I apply to improve my page performance? - insight name: ImageDelivery description: Reducing the download time of images can improve the perceived load time of the page and LCP. [Learn more about optimizing image size](https://developer.chrome.com/docs/performance/insights/image-delivery) relevant trace bounds: {min: 59728701403, max: 59729395208} estimated metric savings: FCP 0 ms, LCP 100 ms estimated wasted bytes: 2 MB example question: What should I do to improve and optimize the time taken to fetch and display images on the page? example question: Are all images on my site optimized? - insight name: LCPBreakdown description: Each [subpart has specific improvement strategies](https://developer.chrome.com/docs/performance/insights/lcp-breakdown). Ideally, most of the LCP time should be spent on loading the resources, not within delays. relevant trace bounds: {min: 59728649746, max: 59729312744} example question: Help me optimize my LCP score example question: Which LCP phase was most problematic? example question: What can I do to reduce the LCP time for this page load? - insight name: LCPDiscovery description: [Optimize LCP](https://developer.chrome.com/docs/performance/insights/lcp-discovery) by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading relevant trace bounds: {min: 59728656735, max: 59729209036} example question: Suggest fixes to reduce my LCP example question: What can I do to reduce my LCP discovery time? example question: Why is LCP discovery time important? - insight name: CLSCulprits description: Layout shifts occur when elements move absent any user interaction. [Investigate the causes of layout shifts](https://developer.chrome.com/docs/performance/insights/cls-culprit), such as elements being added, removed, or their fonts changing as the page loads. relevant trace bounds: {min: 59729100192, max: 59730317334} example question: Help me optimize my CLS score example question: How can I prevent layout shifts on this page? - insight name: DocumentLatency description: Your first network request is the most important. [Reduce its latency](https://developer.chrome.com/docs/performance/insights/document-latency) by avoiding redirects, ensuring a fast server response, and enabling text compression. relevant trace bounds: {min: 59728651057, max: 59728790724} estimated metric savings: FCP 0 ms, LCP 0 ms estimated wasted bytes: 1.6 kB example question: How do I decrease the initial loading time of my page? example question: Did anything slow down the request for this document? - insight name: Viewport description: Tap interactions may be [delayed by up to 300 ms](https://developer.chrome.com/docs/performance/insights/viewport) if the viewport is not optimized for mobile. relevant trace bounds: {min: 59728649746, max: 59734400108} estimated metric savings: INP 0 ms example question: How do I make sure my page is optimized for mobile viewing? - insight name: ThirdParties description: 3rd party code can significantly impact load performance. [Reduce and defer loading of 3rd party code](https://developer.chrome.com/docs/performance/insights/third-parties) to prioritize your page's content. relevant trace bounds: {min: 59728701403, max: 59729465969} example question: Which third parties are having the largest impact on my page performance? === end content Title: PerformanceTraceFormatter formatTraceSummary image-delivery.json.gz Content: URL: http://localhost/image-delivery-cases.html Trace bounds: {min: 59728641874, max: 59734400108} CPU throttling: 1x Network throttling: No throttling # Available insight sets The following is a list of insight sets. An insight set covers a specific part of the trace, split by navigations. The insights within each insight set are specific to that part of the trace. Be sure to consider the insight set id and bounds when calling functions. If no specific insight set or navigation is mentioned, assume the user is referring to the first one. ## insight set id: NAVIGATION_0 URL: http://localhost/image-delivery-cases.html Bounds: {min: 59728649746, max: 59734400108} Metrics (lab / observed): - LCP: 663 ms, event: (eventKey: r-14753, ts: 59729312744), nodeId: 12 - LCP breakdown: - TTFB: 7 ms, bounds: {min: 59728649746, max: 59728656735} - Load delay: 46 ms, bounds: {min: 59728656735, max: 59728702313} - Load duration: 506 ms, bounds: {min: 59728702313, max: 59729208600} - Render delay: 104 ms, bounds: {min: 59729208600, max: 59729312744} - CLS: 0.31, event: (eventKey: s--1, ts: 59729100192) Metrics (field / real users): - LCP: 1740 ms (scope: url) - INP: 185 ms (scope: url) - CLS: 0.08 (scope: url) - The above data is from CrUX–Chrome User Experience Report. It's how the page performs for real users. - The values shown above are the p75 measure of all real Chrome users - The scope indicates if the data came from the entire origin, or a specific url - Lab metrics describe how this specific page load performed, while field metrics are an aggregation of results from real-world users. Best practice is to prioritize metrics that are bad in field data. Lab metrics may be better or worse than fields metrics depending on the developer's machine, network, or the actions performed while tracing. Available insights: - insight name: Cache description: A long cache lifetime can speed up repeat visits to your page. [Learn more about caching](https://developer.chrome.com/docs/performance/insights/cache). relevant trace bounds: {min: 59728702014, max: 59728867430} estimated metric savings: FCP 0 ms, LCP 150 ms estimated wasted bytes: 971.5 kB example question: What caching strategies can I apply to improve my page performance? - insight name: ImageDelivery description: Reducing the download time of images can improve the perceived load time of the page and LCP. [Learn more about optimizing image size](https://developer.chrome.com/docs/performance/insights/image-delivery) relevant trace bounds: {min: 59728701403, max: 59729395208} estimated metric savings: FCP 0 ms, LCP 100 ms estimated wasted bytes: 2 MB example question: What should I do to improve and optimize the time taken to fetch and display images on the page? example question: Are all images on my site optimized? - insight name: LCPBreakdown description: Each [subpart has specific improvement strategies](https://developer.chrome.com/docs/performance/insights/lcp-breakdown). Ideally, most of the LCP time should be spent on loading the resources, not within delays. relevant trace bounds: {min: 59728649746, max: 59729312744} example question: Help me optimize my LCP score example question: Which LCP phase was most problematic? example question: What can I do to reduce the LCP time for this page load? - insight name: LCPDiscovery description: [Optimize LCP](https://developer.chrome.com/docs/performance/insights/lcp-discovery) by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading relevant trace bounds: {min: 59728656735, max: 59729209036} example question: Suggest fixes to reduce my LCP example question: What can I do to reduce my LCP discovery time? example question: Why is LCP discovery time important? - insight name: CLSCulprits description: Layout shifts occur when elements move absent any user interaction. [Investigate the causes of layout shifts](https://developer.chrome.com/docs/performance/insights/cls-culprit), such as elements being added, removed, or their fonts changing as the page loads. relevant trace bounds: {min: 59729100192, max: 59730317334} example question: Help me optimize my CLS score example question: How can I prevent layout shifts on this page? - insight name: DocumentLatency description: Your first network request is the most important. [Reduce its latency](https://developer.chrome.com/docs/performance/insights/document-latency) by avoiding redirects, ensuring a fast server response, and enabling text compression. relevant trace bounds: {min: 59728651057, max: 59728790724} estimated metric savings: FCP 0 ms, LCP 0 ms estimated wasted bytes: 1.6 kB example question: How do I decrease the initial loading time of my page? example question: Did anything slow down the request for this document? - insight name: Viewport description: Tap interactions may be [delayed by up to 300 ms](https://developer.chrome.com/docs/performance/insights/viewport) if the viewport is not optimized for mobile. relevant trace bounds: {min: 59728649746, max: 59734400108} estimated metric savings: INP 0 ms example question: How do I make sure my page is optimized for mobile viewing? - insight name: ThirdParties description: 3rd party code can significantly impact load performance. [Reduce and defer loading of 3rd party code](https://developer.chrome.com/docs/performance/insights/third-parties) to prioritize your page's content. relevant trace bounds: {min: 59728701403, max: 59729465969} example question: Which third parties are having the largest impact on my page performance? === end content Title: PerformanceTraceFormatter formatTraceSummary includes INP insight when there is no navigation Content: URL: https://b2607f8b04800100000289cb1c0a82ba72253000000000000000001.proxy.googlers.com/long-interaction/index.html?x=35 Trace bounds: {min: 337943614456, max: 337947260898} CPU throttling: none Network throttling: none # Available insight sets The following is a list of insight sets. An insight set covers a specific part of the trace, split by navigations. The insights within each insight set are specific to that part of the trace. Be sure to consider the insight set id and bounds when calling functions. If no specific insight set or navigation is mentioned, assume the user is referring to the first one. ## insight set id: NO_NAVIGATION URL: https://b2607f8b04800100000289cb1c0a82ba72253000000000000000001.proxy.googlers.com/long-interaction/index.html?x=35 Bounds: {min: 337943614456, max: 337947260898} Metrics (lab / observed): - INP: 139 ms, event: (eventKey: s-3347, ts: 337944870984) - CLS: 0.00 Metrics (field / real users): n/a – no data for this page in CrUX Available insights: - insight name: INPBreakdown description: Start investigating [how to improve INP](https://developer.chrome.com/docs/performance/insights/inp-breakdown) by looking at the longest subpart. relevant trace bounds: {min: 337944870984, max: 337945010222} example question: Suggest fixes for my longest interaction example question: Why is a large INP score problematic? example question: What's the biggest contributor to my longest interaction? - insight name: ThirdParties description: 3rd party code can significantly impact load performance. [Reduce and defer loading of 3rd party code](https://developer.chrome.com/docs/performance/insights/third-parties) to prioritize your page's content. relevant trace bounds: {min: 337944792445, max: 337944809570} example question: Which third parties are having the largest impact on my page performance? === end content Title: PerformanceTraceFormatter formatCriticalRequests render-blocking-requests.json.gz Content: # Critical network requests Network requests data: allUrls = [0: http://localhost:8000/, 1: https://code.jquery.com/jquery-3.7.1.js, 2: http://localhost:8000/render-blocking-stylesheet.css, 3: http://localhost:8000/render-blocking-script.js] 0;s-1803;2 ms;3 ms;576 ms;583 ms;582 ms;0.4 ms;7 ms;200;text/html;VeryHigh;VeryHigh;VeryHigh;f;http/1.0;f;;[];[Content-Length: |Date: Fri, 07 Mar 2025 15:02:27 GMT|Content-type: text/html|Last-Modified: Fri, 07 Mar 2025 14:58:55 GMT|Server: SimpleHTTP/0.6 Python/3.9.6] 1;s-1920;581 ms;585 ms;1,943 ms;1,944 ms;1,363 ms;776 ms;1 ms;200;application/javascript;High;High;High;t;h2;f;0;[];[content-encoding: gzip|etag: |age: 3975412|x-cache: |date: Fri, 07 Mar 2025 15:02:28 GMT|content-type: application/javascript; charset=utf-8|vary: Accept-Encoding|x-cache-hits: |last-modified: Fri, 18 Oct 1991 12:00:00 GMT|x-served-by: |cache-control: public, max-age=31536000, stale-while-revalidate=604800|x-timer: |via: 1.1 varnish, 1.1 varnish|accept-ranges: bytes|access-control-allow-origin: *|content-length: |server: nginx] 2;s-1924;582 ms;583 ms;1,193 ms;1,193 ms;612 ms;0.2 ms;0.2 ms;200;text/css;VeryHigh;VeryHigh;VeryHigh;t;http/1.0;f;0;[];[Content-Length: |Date: Fri, 07 Mar 2025 15:02:28 GMT|Content-type: text/css|Last-Modified: Fri, 07 Mar 2025 14:58:07 GMT|Server: SimpleHTTP/0.6 Python/3.9.6] 3;s-1922;582 ms;583 ms;1,177 ms;1,178 ms;596 ms;0.4 ms;1 ms;200;text/javascript;High;High;High;t;http/1.0;f;0;[];[Content-Length: |Date: Fri, 07 Mar 2025 15:02:28 GMT|Content-type: text/javascript|Last-Modified: Fri, 07 Mar 2025 15:00:28 GMT|Server: SimpleHTTP/0.6 Python/3.9.6] === end content Title: PerformanceTraceFormatter formatCriticalRequests multiple-navigations-render-blocking.json.gz Content: # Critical network requests ## insight set id: NAVIGATION_0 none ## insight set id: NAVIGATION_1 none === end content Title: PerformanceTraceFormatter formatLongestTasks long-task-from-worker-thread.json.gz Content: # Longest tasks - total time: 11 ms, event: (eventKey: r-62, ts: 2297273193336) - total time: 3 ms, event: (eventKey: r-723, ts: 2297274436743) - total time: 2 ms, event: (eventKey: r-631, ts: 2297274234151) === end content Title: PerformanceTraceFormatter formatLongestTasks multiple-navigations-render-blocking.json.gz Content: # Longest tasks ## insight set id: NAVIGATION_0 - total time: 8 ms, event: (eventKey: r-6426, ts: 171608877757) - total time: 7 ms, event: (eventKey: r-3609, ts: 171608164318) - total time: 2 ms, event: (eventKey: r-6501, ts: 171608885367) ## insight set id: NAVIGATION_1 - total time: 3 ms, event: (eventKey: r-12777, ts: 171614328028) - total time: 0.7 ms, event: (eventKey: r-15391, ts: 171615043591) - total time: 0.7 ms, event: (eventKey: r-15448, ts: 171615044306) === end content Title: PerformanceTraceFormatter formatMainThreadBottomUpSummary yahoo-news.json.gz Content: # Main thread bottom-up summary This is the bottom-up summary for the entire trace. Only the top 10 activities (sorted by self time) are shown. An activity is all the aggregated time spent on the same type of work. For example, it can be all the time spent in a specific JavaScript function, or all the time spent in a specific browser rendering stage (like layout, v8 compile, parsing html). "Self time" represents the aggregated time spent directly in an activity, across all occurrences. "Total time" represents the aggregated time spent in an activity or any of its children. - self: 186 ms, total: 193 ms, source: Compile code - self: 98 ms, total: 990 ms, source: Task - self: 56 ms, total: 70 ms, source: Compile script - self: 52 ms, total: 64 ms, source: setTimeout - self: 38 ms, total: 40 ms, source: aC (url: https://s.yimg.com/aaq/f10d509c/d1irmdsmbztlvx.js, line: 0, column: 19068) - self: 35 ms, total: 35 ms, source: Recalculate style (url: https://news.yahoo.com/, line: 57, column: 187957) - self: 34 ms, total: 34 ms, source: Layout (url: https://news.yahoo.com/, line: 57, column: 187957) - self: 31 ms, total: 34 ms, source: clearTimeout - self: 30 ms, total: 53 ms, source: Parse HTML - self: 26 ms, total: 259 ms, source: Function call === end content Title: PerformanceTraceFormatter formatMainThreadBottomUpSummary multiple-navigations-render-blocking.json.gz Content: # Main thread bottom-up summary This is the bottom-up summary for the entire trace. Only the top 10 activities (sorted by self time) are shown. An activity is all the aggregated time spent on the same type of work. For example, it can be all the time spent in a specific JavaScript function, or all the time spent in a specific browser rendering stage (like layout, v8 compile, parsing html). "Self time" represents the aggregated time spent directly in an activity, across all occurrences. "Total time" represents the aggregated time spent in an activity or any of its children. ## insight set id: NAVIGATION_0 - self: 10 ms, total: 21 ms, source: Task - self: 7 ms, total: 7 ms, source: Layout - self: 2 ms, total: 2 ms, source: Profiling overhead ## insight set id: NAVIGATION_1 - self: 6 ms, total: 7 ms, source: Task === end content Title: PerformanceTraceFormatter formatThirdPartySummary yahoo-news.json.gz Content: # 3rd party summary - name: Yahoo!, main thread time: 270 ms, network transfer size: 2.4 MB - name: Google/Doubleclick Ads, main thread time: 53 ms, network transfer size: 258.6 kB - name: Taboola, main thread time: 43 ms, network transfer size: 393.6 kB - name: Google Tag Manager, main thread time: 19 ms, network transfer size: 123.8 kB - name: AOL / Oath / Verizon Media, main thread time: 5 ms, network transfer size: 42.3 kB === end content Title: PerformanceTraceFormatter formatThirdPartySummary multiple-navigations-render-blocking.json.gz Content: # 3rd party summary ## insight set id: NAVIGATION_0 - name: localhost, main thread time: 0.8 ms, network transfer size: 22.9 kB ## insight set id: NAVIGATION_1 - name: localhost, main thread time: 0.3 ms, network transfer size: 22.9 kB === end content Title: PerformanceTraceFormatter formatCallTree long-task-from-worker-thread.json.gz Content: # Call tree: 1;r-62;Task;10.6;0.1;;2;;;S 2;r-63;Evaluate script;10.5;1.5;;3-5;; 3;r-75;Profiling overhead;8.8;8.8;;;; 4;p-3728792-1-17-3;(anonymous);0.2;0.2;;;; IMPORTANT: Never show eventKey to the user. === end content Title: PerformanceTraceFormatter formatCallTree web-dev.json.gz Content: # All URLs: * 0: https://www.gstatic.com/firebasejs/6.6.1/firebase-auth.js * 1: https://www.gstatic.com/firebasejs/6.6.1/firebase-app.js # Call tree: 1;r-4608;Task;7.2;;;2;; 2;r-4619;Evaluate script;7.2;;0;3;; 3;p-73704-775-2074-418;(anonymous);7.2;;0;4;0;0;S 4;p-73704-775-2074-419;(anonymous);7.2;0.1;0;5;0;9 5;p-73704-775-2075-420;(anonymous);7.1;;0;6;0;200 6;p-73704-775-2075-421;(anonymous);7.1;2.6;0;7;0;231 7;p-73704-775-2095-422;(anonymous);4.5;1.3;0;8-19;0;292 8;p-73704-775-2095-423;(anonymous);0.5;0.1;0;19-21;0;756 9;p-73704-775-2097-424;Et;0.1;0.1;0;;0;10766 10;p-73704-775-2098-425;St;0.4;0.2;0;21;0;10904 11;p-73704-775-2105-427;k;0.4;0.4;0;;0;5125 12;p-73704-775-2108-428;Go;0.1;;0;22;0;68523 13;p-73704-775-2109-430;Oi;0.4;0.2;0;23;0;38264 14;p-73704-775-2115-432;tl;0.3;0.3;0;;0;154217 15;p-73704-775-2118-433;ul;0.6;0.5;0;24;0;155034 16;p-73704-775-2121-435;cl;0.1;0.1;0;;0;155107 17;p-73704-775-2123-436;hl;0.1;;0;25;0;155309 18;p-73704-775-2124-439;sl;0.1;0.1;0;;0;154927 19;p-73704-775-2127-441;hl;0.1;0.1;0;;0;155309 20;p-73704-775-2128-442;registerService;0.2;;1;26-28;0;9441 21;p-73704-775-2099-426;vt;0.2;0.2;0;;0;10155 22;p-73704-775-2108-429;Mo;0.1;0.1;0;;0;66493 23;p-73704-775-2111-431;vi;0.1;0.1;0;;0;37138 24;p-73704-775-2118-434;ll;0.1;0.1;0;;0;155345 25;p-73704-775-2123-437;ll;0.1;;0;28;0;155345 26;p-73704-775-2128-443;u;0.1;0.1;1;;0;10091 27;p-73704-775-2129-444;d;0.1;0.1;1;;0;595 28;p-73704-775-2123-438;get prototype;0.1;0.1;;;; IMPORTANT: Never show eventKey to the user. The following are markdown block(s) of code that ran in the page, each representing a separate function. and marks the exact function declaration, and everything outside that is provided for additional context. Comments at the end of each line indicate the runtime performance cost of that code. Do not show the user the function markers or the additional context. Here are 4 relevant functions: (anonymous) @ https://www.gstatic.com/firebasejs/6.6.1/firebase-auth.js:0:0. With added context, chunk is from 0:0 to 6:0 ``` // context ... () => { /* some code from https://www.gstatic.com/firebasejs/6.6.1/firebase-auth.js... */ } // context ... ``` (anonymous) @ https://www.gstatic.com/firebasejs/6.6.1/firebase-auth.js:0:231. With added context, chunk is from 0:0 to 6:0 ``` // context ... () => { /* some code from https://www.gstatic.com/firebasejs/6.6.1/firebase-auth.js... */ } // context ... ``` (anonymous) @ https://www.gstatic.com/firebasejs/6.6.1/firebase-auth.js:0:292. With added context, chunk is from 0:0 to 6:0 ``` // context ... () => { /* some code from https://www.gstatic.com/firebasejs/6.6.1/firebase-auth.js... */ } // context ... ``` (anonymous) @ https://www.gstatic.com/firebasejs/6.6.1/firebase-auth.js:0:155034. With added context, chunk is from 0:0 to 6:0 ``` // context ... () => { /* some code from https://www.gstatic.com/firebasejs/6.6.1/firebase-auth.js... */ } // context ... ``` === end content Title: PerformanceTraceFormatter formatNetworkRequests formats network requests that have redirects Content: ## Network request: http://localhost:3000/redirect3 eventKey: s-9843 Timings: - Queued at: 3 ms - Request sent at: 1,529 ms - Download complete at: 3,533 ms - Main thread processing completed at: 3,538 ms Durations: - Download time: 0.1 ms - Main thread processing time: 5 ms - Total duration: 3,535 ms Redirects: #### Redirect 1: http://localhost:3000/ - Start time: 3 ms - Duration: 512 ms #### Redirect 2: http://localhost:3000/redirect1 - Start time: 515 ms - Duration: 506 ms #### Redirect 3: http://localhost:3000/redirect2 - Start time: 1,021 ms - Duration: 507 ms Status code: 200 MIME Type: text/html Protocol: http/1.1 Priority: VeryHigh Render blocking: No From a service worker: No Initiators (root request to the request that directly loaded this one): none Response headers - Transfer-Encoding: chunked - Keep-Alive: - Date: Tue, 11 Mar 2025 10:19:12 GMT - Content-Type: text/html - Connection: keep-alive === end content Title: PerformanceTraceFormatter formatNetworkRequests formats network requests in verbose mode Content: ## Network request: https://fonts.googleapis.com/css2?family=Poppins:ital,wght@1,800 eventKey: s-1046 Timings: - Queued at: 38 ms - Request sent at: 42 ms - Download complete at: 48 ms - Main thread processing completed at: 52 ms Durations: - Download time: 5 ms - Main thread processing time: 4 ms - Total duration: 14 ms Initiator: https://chromedevtools.github.io/performance-stories/lcp-large-image/index.html Redirects: no redirects Status code: 200 MIME Type: text/css Protocol: unknown Priority: VeryHigh Render blocking: Yes From a service worker: No Initiators (root request to the request that directly loaded this one): https://chromedevtools.github.io/performance-stories/lcp-large-image/index.html Response headers - date: Thu, 07 Mar 2024 21:17:02 GMT - content-encoding: gzip - x-content-type-options: nosniff - last-modified: Thu, 07 Mar 2024 21:17:02 GMT - server: ESF - cross-origin-opener-policy: - x-frame-options: SAMEORIGIN - content-type: text/css; charset=utf-8 - access-control-allow-origin: * - cache-control: private, max-age=86400, stale-while-revalidate=604800 - cross-origin-resource-policy: - timing-allow-origin: * - link: ; rel=preconnect; crossorigin - x-xss-protection: 0 - expires: Thu, 07 Mar 2024 21:17:02 GMT === end content Title: PerformanceTraceFormatter formatNetworkRequests defaults to verbose mode when 1 request and verbose option is not defined Content: ## Network request: https://fonts.googleapis.com/css2?family=Poppins:ital,wght@1,800 eventKey: s-1046 Timings: - Queued at: 38 ms - Request sent at: 42 ms - Download complete at: 48 ms - Main thread processing completed at: 52 ms Durations: - Download time: 5 ms - Main thread processing time: 4 ms - Total duration: 14 ms Initiator: https://chromedevtools.github.io/performance-stories/lcp-large-image/index.html Redirects: no redirects Status code: 200 MIME Type: text/css Protocol: unknown Priority: VeryHigh Render blocking: Yes From a service worker: No Initiators (root request to the request that directly loaded this one): https://chromedevtools.github.io/performance-stories/lcp-large-image/index.html Response headers - date: Thu, 07 Mar 2024 21:17:02 GMT - content-encoding: gzip - x-content-type-options: nosniff - last-modified: Thu, 07 Mar 2024 21:17:02 GMT - server: ESF - cross-origin-opener-policy: - x-frame-options: SAMEORIGIN - content-type: text/css; charset=utf-8 - access-control-allow-origin: * - cache-control: private, max-age=86400, stale-while-revalidate=604800 - cross-origin-resource-policy: - timing-allow-origin: * - link: ; rel=preconnect; crossorigin - x-xss-protection: 0 - expires: Thu, 07 Mar 2024 21:17:02 GMT === end content Title: PerformanceTraceFormatter formatNetworkRequests formats in compressed mode if a request is duplicated in the array Content: Network requests data: allUrls = [0: http://localhost:3000/redirect3, 1: http://localhost:3000/, 2: http://localhost:3000/redirect1, 3: http://localhost:3000/redirect2] 0;s-9843;3 ms;1,529 ms;3,533 ms;3,538 ms;3,535 ms;0.1 ms;5 ms;200;text/html;VeryHigh;VeryHigh;VeryHigh;f;http/1.1;f;;[[1|3 ms|512 ms],[2|515 ms|506 ms],[3|1,021 ms|507 ms]];[Transfer-Encoding: chunked|Keep-Alive: |Date: Tue, 11 Mar 2025 10:19:12 GMT|Content-Type: text/html|Connection: keep-alive] 0;s-9843;3 ms;1,529 ms;3,533 ms;3,538 ms;3,535 ms;0.1 ms;5 ms;200;text/html;VeryHigh;VeryHigh;VeryHigh;f;http/1.1;f;;[[1|3 ms|512 ms],[2|515 ms|506 ms],[3|1,021 ms|507 ms]];[Transfer-Encoding: chunked|Keep-Alive: |Date: Tue, 11 Mar 2025 10:19:12 GMT|Content-Type: text/html|Connection: keep-alive] === end content Title: PerformanceTraceFormatter formatNetworkRequests correctly formats an initiator chain for network-requests-initiators trace Content: Network requests data: allUrls = [0: https://www.youtube.com/, 1: https://i.ytimg.com/generate_204, 2: https://www.youtube.com/s/desktop/28bb7000/jsbin/desktop_polymer.vflset/desktop_polymer.js, 3: https://www.youtube.com/s/desktop/28bb7000/jsbin/web-animations-next-lite.min.vflset/web-animations-next-lite.min.js, 4: https://www.youtube.com/s/desktop/28bb7000/jsbin/custom-elements-es5-adapter.vflset/custom-elements-es5-adapter.js, 5: https://www.youtube.com/s/desktop/28bb7000/jsbin/webcomponents-sd.vflset/webcomponents-sd.js, 6: https://www.youtube.com/s/desktop/28bb7000/jsbin/intersection-observer.min.vflset/intersection-observer.min.js, 7: https://www.youtube.com/s/desktop/28bb7000/jsbin/scheduler.vflset/scheduler.js, 8: https://www.youtube.com/s/desktop/28bb7000/jsbin/www-i18n-constants-en_US.vflset/www-i18n-constants.js, 9: https://www.youtube.com/s/desktop/28bb7000/jsbin/www-tampering.vflset/www-tampering.js, 10: https://www.youtube.com/s/desktop/28bb7000/jsbin/spf.vflset/spf.js, 11: https://www.youtube.com/s/desktop/28bb7000/jsbin/network.vflset/network.js, 12: https://fonts.googleapis.com/css2?family=Roboto:wght@300;400;500;700&family=YouTube+Sans:wght@300..900&display=swap, 13: https://www.youtube.com/s/desktop/28bb7000/cssbin/www-main-desktop-home-page-skeleton.css, 14: https://www.youtube.com/s/desktop/28bb7000/cssbin/www-onepick.css, 15: https://www.youtube.com/s/_/ytmainappweb/_/ss/k=ytmainappweb.kevlar_base.YzCM3q0siy4.L.B1.O/am=ADA7AQ/d=0/br=1/rs=AGKMywG7cU8b38Gfv3WYn4_os7hoqR-TIw, 16: https://googleads.g.doubleclick.net/pagead/id?slf_rd=1, 17: https://googleads.g.doubleclick.net/pagead/id, 18: https://fonts.gstatic.com/s/roboto/v30/KFOmCnqEu92Fr1Mu4mxK.woff2, 19: https://www.youtube.com/s/search/audio/failure.mp3, 20: https://www.youtube.com/s/search/audio/no_input.mp3, 21: https://www.youtube.com/s/search/audio/open.mp3, 22: https://www.youtube.com/s/search/audio/success.mp3, 23: https://www.youtube.com/s/desktop/28bb7000/cssbin/www-main-desktop-watch-page-skeleton.css, 24: https://www.youtube.com/youtubei/v1/att/get?prettyPrint=false, 25: https://fonts.gstatic.com/s/roboto/v30/KFOlCnqEu92Fr1MmWUlfBBc4.woff2, 26: https://fonts.gstatic.com/s/youtubesans/v30/Qw38ZQNGEDjaO2m6tqIqX5E-AVS5_rSejo46_PCTRspJ0OosolrBEJL3HO_T7fE.woff2, 27: https://fonts.gstatic.com/s/roboto/v30/KFOlCnqEu92Fr1MmEU9fBBc4.woff2, 28: https://www.youtube.com/youtubei/v1/feedback?prettyPrint=false, 29: https://www.google.com/js/th/EirmVnnNlSgqRyHN1YLvHhRw11SWUqUPb76JYHphonQ.js, 30: https://www.youtube.com/manifest.webmanifest, 31: https://www.youtube.com/s/desktop/28bb7000/img/favicon.ico, 32: https://www.gstatic.com/youtube/img/branding/favicon/favicon_144x144.png, 33: https://www.youtube.com/s/player/5b22937f/player_ias.vflset/en_US/base.js, 34: https://www.youtube.com/s/player/5b22937f/www-player.css] 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