Is ScreenShot safe?

Medium risk

ScreenShot stores user-triggered screenshots with page URL and title, then displays the image inside addonx.net/thisshot.

When you use ScreenShot to capture a page, the extension saves the screenshot image data in local extension storage along with the source page URL and title. It then opens addonx.net/thisshot, where its loader script reads that saved shot and places the image data into the page's preview element.

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

Addonxv1.2Firefox Add-ons
43Risk
Who publishes it

Addonx - no other listings under this identity, 1 shared hostname

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

Publisher
Addonx

Shared hosts - 1 hostname

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.

addonx.net
Also called by 8 other listings, including HImage, ThisShot

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 addonx.net

    http://addonx.net/* and 1 more

  • Read and change your data on every secure site you visit

    https://*/*

  • Read and change your data on every site you visit

    http://*/*

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

    tabs

  • Store data in your browser

    storage

  • Store an unlimited amount of data in your browser

    unlimitedStorage

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

    activeTab

  • Run its own code inside the pages you visit

    scripting

  • Block and redirect the requests your browser makes

    declarativeNetRequest

Where it sends data

Destinations our analysis observed ScreenShot 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.

  • addonx.net

    ScreenShot sends data to addonx.net. One other extension we have analysed sends data here.

Updated 30 September 2026amo-2961111