Last updated: September 2026
Broken CSS/JS Checker is a Chrome extension that detects broken (failed to load) CSS and JavaScript resources on the web page you are currently viewing. It works by observing network requests made by the page and comparing them to CSS/JS elements found in the page DOM.
This extension does not collect, store, transmit, or sell any personal data, browsing history, or page content. All processing happens locally in your browser.
Network request results (URL, HTTP status, error type) are kept in memory only, per browser tab, and are discarded when the tab is closed or navigates to a new page. Nothing is written to disk, sent to any server, or shared with any third party.
Questions about this policy can be sent to the developer via the Chrome Web Store support page for this extension.