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Extensions
Welcome What's new in Chrome extensions
Support and feedback Get help with Chrome extensions File a bug Submit a feature request Find and follow a bug
Welcome Extensions 101 Development basics Run scripts on every page Inject scripts into the active tab Manage tabs Handle events with service workers
Welcome to Manifest V3 Extensions platform vision Overview of Manifest V3
What are themes? Frequently asked questions
Migrate to Manifest V3 Manifest V3 migration checklist Update the manifest Migrate to a service worker Update your code Replace blocking web request listeners Improve extension security Publish your extension Manifest V2 support timeline Known issues when migrating to Manifest V3
API reference Samples
Extension development overview Manifest file format Architecture overview Declare permissions About extension service workers Design the user interface Debug extensions
About extension service workers Extension service worker basics The extension service worker lifecycle Events in service workers Use WebSockets in service workers
Message passing Content scripts Match patterns Using promises Cross-origin isolation Storage and cookies
Use eval() in sandboxed iframes
Overriding Chrome settings Extending DevTools Fetching favicons OAuth2: Authenticate users with Google Override Chrome pages Rich notifications API Native messaging Audio recording and screen capture Use geolocation WebHID in extensions WebUSB in extensions File handling on Chrome OS Unit testing Chrome Extensions End-to-end testing for Chrome Extensions Tutorial: Testing Chrome Extensions with Puppeteer
Protect user privacy Permission warning guidelines Stay secure Accessibility (a11y) Localization message formats Give users options
Extension hosting Alternative extension installation methods Installing extensions on Linux Use Google Analytics 4
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
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
Extensions
Welcome What's new in Chrome extensions
Support and feedback Get help with Chrome extensions File a bug Submit a feature request Find and follow a bug
Welcome Extensions 101 Development basics Run scripts on every page Inject scripts into the active tab Manage tabs Handle events with service workers
Welcome to Manifest V3 Extensions platform vision Overview of Manifest V3
What are themes? Frequently asked questions
Migrate to Manifest V3 Manifest V3 migration checklist Update the manifest Migrate to a service worker Update your code Replace blocking web request listeners Improve extension security Publish your extension Manifest V2 support timeline Known issues when migrating to Manifest V3
API reference Samples
Extension development overview Manifest file format Architecture overview Declare permissions About extension service workers Design the user interface Debug extensions
About extension service workers Extension service worker basics The extension service worker lifecycle Events in service workers Use WebSockets in service workers
Message passing Content scripts Match patterns Using promises Cross-origin isolation Storage and cookies
Use eval() in sandboxed iframes
Overriding Chrome settings Extending DevTools Fetching favicons OAuth2: Authenticate users with Google Override Chrome pages Rich notifications API Native messaging Audio recording and screen capture Use geolocation WebHID in extensions WebUSB in extensions File handling on Chrome OS Unit testing Chrome Extensions End-to-end testing for Chrome Extensions Tutorial: Testing Chrome Extensions with Puppeteer
Protect user privacy Permission warning guidelines Stay secure Accessibility (a11y) Localization message formats Give users options
Extension hosting Alternative extension installation methods Installing extensions on Linux Use Google Analytics 4
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
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

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