Browser extension privacy

When you click its icon, the extension requests the page in your current tab twice, once identifying the request the way an AI agent would and once the way a browser would, and requests robots.txt, llms.txt and /.well-known/ucp from the same site. It compares the responses, scores them against the Agent Readability Spec, and displays the result. Then it stops.

All of that happens inside your browser. The comparison, the scoring and the display are local; no step of a scan involves a Rebilder server.

Nothing. No page content, URL, domain, score or identifier is transmitted to Rebilder or to anyone else. We operate no server that receives extension data, because the extension contacts no server of ours.

Chrome distinguishes collecting data from handling it, and the distinction matters here. The extension handles website content, in the sense that it reads the page in memory to produce a score. It collects nothing, in the sense that nothing leaves your device.

Nothing. The extension holds no storage permission, so there is nowhere for a history of what you scanned to exist. Closing the popup discards the result.

Only to the site you are viewing, and only while the popup is open. The extension has no background process and no content script, so it makes no requests at any other time and is not running while you browse.

The footer contains links to rebilder.com. Those are ordinary links: nothing is sent unless you choose to click one, and if you do, that is an ordinary visit to our website, governed by our main privacy policy.

At install: activeTab, and nothing else. It grants access to the tab you are on at the moment you click the icon, and it expires when you navigate away. We request no host permissions at install, which would grant standing access to sites whether or not you asked.

There is one fallback, granted only if you press a button. On some sites the browser does not let the scan read the page under activeTab alone. When that happens, and only after a scan has already failed, the extension offers to request access to that one site. Declining leaves everything as it was; accepting can be undone from the browser’s extensions page at any time. The extension never requests access to all sites, and it never asks before it has actually needed to.

If a site’s robots.txt names our scanner, rebilder-ars, and disallows the page, the extension stops after reading robots.txt and tells you the site declined. It does this even though your browser has already loaded the page.

A score you asked for is yours. We do not rank sites scanned through the extension, publish them, or add them to any index or leaderboard. Nothing scanned here can reach our public record, because nothing scanned here reaches us at all.

If a future version ever sends anything anywhere, this policy will say so before that version ships, and the extension’s permissions will change in a way your browser shows you. Questions go to privacy@rebilder.com.