Dynamic manifest updates let PWAs refresh metadata without reinstall

Why this matters for OpenPWA

Many teams still treat the web app manifest as a static file written once at launch. In reality, marketplaces and discovery surfaces read manifest data long after installation. Dynamic updates keep installed users on current branding, new shortcuts, and corrected metadata.

OpenPWA update checklist

• Version your manifest (add a version or timestamp comment) so you can detect changes.
• Serve the manifest with a short cache lifetime or proper Cache-Control for logged-in users.
• After updating the manifest JSON, trigger a lightweight service worker update so the browser re-fetches it.
• Verify changes appear in navigator.getInstalledRelatedApps() or by inspecting the app info sheet on Android/ChromeOS.
• Document which manifest fields are safe to change post-install (icons, shortcuts, description) versus which may require user re-consent (scope, start_url).

Official source facts

• Chrome and Edge support dynamic manifest updates for most fields: https://developer.chrome.com/docs/web-platform/web-app-manifests
• MDN documents the update behavior: https://developer.mozilla.org/en-US/docs/Web/Manifest
• Safari 26 improved manifest update reliability on iOS.

Distribution implication

A PWA that can refresh its own listing metadata stays relevant in app directories and search results without forcing users through another install flow.

Next step

Add a manifest version field and a small admin UI that lets marketing update icons and shortcuts. Measure how many installed users receive the updated metadata within 7 days.