Requires a page reload to apply and disables caching for image requests. Disable AVIF image format Frame Rendering Stats Plots frame throughput, dropped frames distribution, and GPU memory. fps Show ads on this site, if allowed JavaScript is disabled Paint flashing Do not auto-open DevTools for popups Disable paused state overlay Layout Shift Regions color vision deficiency Scrolling performance issues Shows layer borders (orange/olive) and tiles (cyan). CSS media type vision deficiency Forces media type for testing print and screen styles Highlights areas of the page (blue) that were shifted. May not be suitable for people prone to photosensitive epilepsy. CSS media feature Disables local() sources in @font-face rules. Requires a page reload to apply. Highlights frames (red) detected to be ads. Forces CSS prefers-reduced-motion media feature Forces CSS prefers-color-scheme media feature Shows borders around hit-test regions. Hit-test borders Force ad blocking on this site Open dedicated DevTools for Node.js Block ads on this site Core Web Vitals Layer borders Show Rendering Highlights elements (teal) that can slow down scrolling, including touch & wheel event handlers and other main-thread scrolling situations. Highlights areas of the page (green) that need to be repainted. May not be suitable for people prone to photosensitive epilepsy. Forces CSS prefers-reduced-data media feature Shows an overlay with Core Web Vitals. paint layout Reload page Hard reload page Emulates a focused page. Disable WebP image format Auto-open DevTools for popups Forces CSS color-gamut media feature Forces vision deficiency emulation