[Home](./index.md) > [@firebase/app](./app.md) > [setLogLevel](./app.setloglevel.md) ## setLogLevel() function Sets log level for all Firebase SDKs. All of the log types above the current log level are captured (i.e. if you set the log level to `info`, errors are logged, but `debug` and `verbose` logs are not). Signature: ```typescript export declare function setLogLevel(logLevel: LogLevelString): void; ``` ## Parameters | Parameter | Type | Description | | --- | --- | --- | | logLevel | LogLevelString | | Returns: void