Is YouTube Video Downloader safe?

Medium risk

YouTube Video Downloader injects a remote S3 script into every matched webpage.

The extension runs a content script on all websites and includes code that decodes a script URL hosted on Amazon S3. It creates a script element for that URL and appends it to the page, allowing the remote script to run in the page context.

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

Free Browser Addonsv2.2Firefox Add-ons
46Risk
Who publishes it

Free Browser Addons - no other listings under this identity

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
Free Browser Addons

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 2.2. 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

    *://*/*

  • Watch every request your browser makes

    webRequest

  • Watch, block and rewrite every request your browser makes

    webRequestBlocking

  • Route all of your browsing through a server of its choosing

    proxy

  • Store data in your browser

    storage

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

    tabs

Where it sends data

Destinations our analysis observed YouTube Video Downloader contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • s3.amazonaws.com

    YouTube Video Downloader sends data to s3.amazonaws.com. One other extension we have analysed sends data here.

Updated 30 September 2026amo-1014477