v150 · PWA · Installation

Manifest Builder

Build the files needed for a Chrome 150 PWA origin migration. Fill in your new origin, old origin, and app IDs. The builder generates the destination manifest.json with migrate_from, the old origin's /.well-known/web-app-origin-association file with allow_migration, and an optional old-manifest migrate_to hint.

Both sides are required: the destination app declares the old installed app in migrate_from, and the old origin explicitly authorizes the destination app ID with allow_migration. Chrome currently limits this feature to same-site migrations.

New origin (migration target)

New origin App name Short name start_url path scope path Manifest path Migration behavior

Old origin (migration source)

Old origin Old app ID Old-origin install URL for redirects

Serve at:

Optional proactive signal from the old origin. Useful when the old app can still update before redirects take over.

implementation reference

Need the exact API surface, compatibility boundaries, errors, lifecycle, and source links? Read the matching gendn reference ↗

see also

implementation reference