Copy Hosts

One click collects every host the current tab loaded resources from and copies the list to your clipboard.

Copy Hosts turns "which domains does this page actually talk to?" into a single click. Open any page, click the toolbar icon, and the full list of hosts the tab loaded resources from — scripts, images, fonts, XHR, trackers, CDNs — lands in your clipboard, one host per line. A small toast on the page confirms the copy and shows the count. WHAT IT'S FOR • Building proxy / PAC rules and VPN split-tunnel lists • Firewall and DNS allowlists / blocklists • Content-Security-Policy source lists • Ad-block / privacy filter rules • Quick audits of a page's third-party connections OPTIONS • Show a notification after copying (on by default) • Sort the host list • Remove duplicates (on by default) PRIVATE BY DESIGN The list is read from the tab's own resource-timing data, directly in your browser, only in the tab you clicked on. The extension has no standing access to any site, makes no network requests, and collects no data whatsoever. No servers, no analytics, no accounts.