Replace Google CDN is a Chrome extension that redirects requests for Google-hosted frontend libraries and related resources to domestic Chinese mirrors.
The extension solves the problem of slow access to Google's CDN services from within China by intercepting network requests and rewriting the domain names to point to faster local alternatives. It uses browser APIs to perform request redirection, supporting both the V2 webRequest API and the V3 declarativeNetRequest API. The tool maintains a configurable list of replacements covering Google's CDN domains, fonts services, reCAPTCHA, Gravatar, Bootstrap, jQuery, and other commonly used resources. Users can customize which replacements are active through the extension's options page, accessible by double-clicking the extension icon.
The extension suits developers and users in China who frequently visit websites that load resources from Google's CDN. It is particularly useful for accessing international websites that rely on Google's frontend libraries, as it can dramatically reduce page load times by eliminating the latency associated with blocked or slow Google domains. The tool provides a straightforward alternative to manually modifying hosts files or using VPN solutions, requiring only installation and optional configuration.
The project maintains separate changelog documentation for its V2 and V3 API implementations, indicating ongoing support for multiple browser extension standards. The tool includes a dedicated README for its options UI implementation, suggesting attention to the user configuration experience. The extension is distributed through the official Chrome Web Store, indicating it has passed platform review requirements.
