Is YouTube Downloader safe?

Low risk

YouTube Downloader removes page security headers from every main-frame and sub-frame navigation.

YouTube Downloader registers a blocking web request handler for all sites and removes X-Frame-Options and Content-Security-Policy response headers as pages and iframes load. This can change how visited pages are allowed to embed or restrict content, but the confirmed code does not show this header modification being sent to an external recipient.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

Alpha Stackv1.2Firefox Add-ons
21Risk

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 1.2. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on every site you visit

    *://*/*

  • Start, monitor and manage your downloads

    downloads

  • Store data in your browser

    storage

  • See the address and title of every tab you have open

    tabs

  • Act on the current tab, but only after you click the extension

    activeTab

  • Watch every request your browser makes

    webRequest

  • Watch, block and rewrite every request your browser makes

    webRequestBlocking

Updated 2 November 2026amo-2890860