Create Chrome extension and PWA icons in your browser. Nothing is uploaded — everything runs locally.
Chrome extension: save the files as icon16.png, icon32.png, icon48.png and icon128.png and reference them in your manifest.json under "icons".
PWA: reference icon192.png and icon512.png in your web app manifest. For maskable icons the OS applies its own mask — keep the background opaque and the content inside the safe zone shown in the preview.
Favicon: put the files in /icons/ and link them in your page's <head> — the snippet below is ready to paste.
Matches the selected preset — paste it into your project.