Manifest launch_handler browser support

The launch_handler manifest member has one field, client_mode, which controls how an installed PWA is launched: navigate-new opens a new client, navigate-existing focuses and navigates an existing one, focus-existing focuses an existing client without navigating it, and auto (the default) lets the browser choose. The two -existing modes behave like navigate-new when no client is open. Whichever mode applies, the launch target URL is delivered through window.launchQueue.

The table covers the member as recorded in MDN browser-compat-data.

• Legend
• Yes
• Partial
• Flag
• No
• Unknown

Browser / Platform	Support	Versions	Confidence	Source	Notes
Chrome (Desktop)	Yes	110	high	source	—
Chrome (Android)	Yes	110	high	source	1
Edge (Desktop)	Yes	110	high	source	2
Firefox (Desktop)	No	—	high	source	3
Firefox (Android)	No	—	high	source	45
Safari (macOS)	No	—	high	source	6
Safari (iOS)	No	—	high	source	78
Samsung Internet	Yes	21.0	high	source	9
WebView (Android)	Yes	110	high	source	10

1. Derived by browser-compat-data mirroring from Chrome.
2. Derived by browser-compat-data mirroring from Chrome.
3. No Firefox support is recorded in browser-compat-data.
4. No Firefox for Android support is recorded in browser-compat-data.
5. Derived by browser-compat-data mirroring from Firefox.
6. No Safari support is recorded in browser-compat-data.
7. No Safari on iOS support is recorded in browser-compat-data.
8. Derived by browser-compat-data mirroring from Safari.
9. Derived by browser-compat-data mirroring from Chrome Android.
10. Derived by browser-compat-data mirroring from Chrome Android.

Source data: /compatibility/manifest-launch-handler.json · Global usage: 72 % (StatCounter 2026-05)

Source: spec · MDN · Last verified 2026-10-03 · Confidence: high (computed from sources)

See also

• Manifest launch_handler: controlling how an installed app launches
• Web App Launch Handler API: launch_handler member (wicg.github.io)
• launch_handler (developer.mozilla.org)
• Control how your app is launched (developer.chrome.com)