Is Save4k safe?

Clean risk

Save4k sends the active tab or YouTube video URL to youtube01.com when you click its download controls.

When you click the toolbar button, Save4k opens youtube01.com with the current tab URL included in the query string. On YouTube watch pages, its injected download button does the same with the current video page URL.

Save4Kv1.3Firefox Add-ons
0Risk
Who publishes it

Save4K - 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
Save4K

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 1.3. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

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

    activeTab

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

    tabs

Where it sends data

Destinations our analysis observed Save4k 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.

  • youtube01.com

    Save4k sends data to youtube01.com. No other extension we have analysed sends data here.

Updated 30 September 2026amo-2746408