Extensions
Welcome What's new in Chrome extensions Getting started
Welcome to Manifest V3 Extensions platform vision Overview of Manifest V3 Migrating to Manifest V3 Manifest V3 migration checklist Manifest V2 support timeline
What are extensions? What are themes? Frequently asked questions Extensions quality guidelines FAQ
API Reference Samples
Extension development overview Manifest file format Architecture overview Declare permissions Design the user interface Debugging extensions Samples
Message passing Content scripts Manage events with service workers Match patterns Using promises Cross-origin isolation
Cross-origin XMLHttpRequest Using eval in Chrome extensions
Overriding Chrome settings Extending DevTools OAuth2: Authenticate users with Google Overriding Chrome pages Rich notifications API
Migrating from background pages to service workers
Protect user privacy Declare permissions and warn users Stay secure Accessibility (a11y) Localization message formats Give users options
Extension hosting Alternative extension installation methods Installing extensions on Linux Tutorial: Google analytics
About Manifest V2 Getting started
What are extensions? What are themes? Frequently asked questions
Extension development overview Manifest file format Architecture overview Declare permissions Design the user interface Debugging extensions Samples
Message passing Content scripts Manage events with background scripts Match patterns Cross-origin isolation
Cross-origin XMLHttpRequest Using eval in Chrome extensions
Overriding Chrome settings Extending DevTools OAuth2: Authenticate users with Google Overriding Chrome pages Rich notifications API
Migrate to event-driven background scripts
Protect user privacy Declare permissions and warn users Stay secure Accessibility (a11y) Localization message formats Give users options
Chrome Web Store Alternative extension distribution options Installing extensions on Linux Tutorial: Google analytics

Manifest Version

Published on • Updated on

An integer specifying the version of the manifest file format your package requires. For example:

"manifest_version": 3

Supported values for this key are:

  • 3: Use the Manifest V3 format and associated feature set.
  • 2: Use the Manifest V2 format and associated feature set.

The current version is Manifest V3. Manifest V2 is also currently permitted, but will be phased out in the future (see Manifest V2 support timeline for more details). There will be other manifest versions in the future (V4 and beyond) but these aren't scheduled yet.

Last updated: Improve article