Debug Mode for Web Apps
Use these tools to find app-specific issues in your Web App:
Android
Enable USB-Debugging on your device.
In Telegram Settings, scroll all the way down, press and hold on the version number two times.
Choose Enable WebView Debug in the Debug Settings.
Connect your phone to your computer and open chrome:
Telegram Desktop on Windows and Linux
Download and launch the Beta Version of Telegram Desktop on Windows or Linux (not supported on Telegram Desktop for macOS yet).
Go to Settings > Advanced > Experimental settings > Enable webview inspection.
Right click in the WebView and choose Inspect.
Telegram macOS
Download and launch the Beta Version of Telegram macOS.
Quickly click 5 times on the Settings icon to open the debug menu and enable “Debug Web Apps”.
Right click in the web app and choose Inspect Element.