Is Awesome Screenshot & Screen Recorder safe?

Low risk

Awesome Screenshot relays unvalidated postMessage commands, letting any web page trigger tab screenshots or open arbitrary URLs.

The extension's content script listens for postMessage events without validating the sender's origin. Any web page can send a crafted message to instruct the background script to capture a screenshot of the current tab as a PNG, or to open an attacker-specified URL in a new tab. No user interaction or permission prompt is required for these actions once the extension is installed.

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

Diigo Inc.v4.3.7.21Firefox Add-ons
20Risk
Who publishes it

Diigo Inc. - no other listings under this identity, 2 shared hostnames

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

Publisher
Diigo Inc.

Shared hosts - 2 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

blog.awesomescreenshot.com
Also called by 3 other listings, including Awesome Screen Recorder, Awesome Screenshot
vidline.com
Also called by 3 other listings, including Awesome Screen Recorder, Awesome Screenshot

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 4.3.7.21. 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

    <all_urls>

  • 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

  • Start, monitor and manage your downloads

    downloads

  • Store data in your browser

    storage

  • Store an unlimited amount of data in your browser

    unlimitedStorage

  • Write to your clipboard

    clipboardWrite

  • Read and change cookies, including the ones that keep you signed in

    cookies

Updated 2 November 2026amo-287841