Is Lookup - Website Profiler safe?

Low risk

Lookup - Website Profiler sends the hostname of every page you load to joinlookup.com.

A background script fires on every http(s) tab load or URL change, without any click, and posts the page hostname to joinlookup.com to fetch emails, DNS info and site technologies. The contacts lookup also sends the full page URL including path and query. Full page HTML is only sent after you click the toolbar button.

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

Lookupv0.2.6Firefox Add-ons
18Risk

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 0.2.6. 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>

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

    tabs

  • Store data in your browser

    storage

  • Write to your clipboard

    clipboardWrite

  • Schedule its own background tasks

    alarms

Where it sends data

Destinations our analysis observed Lookup - Website Profiler 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.

  • joinlookup.com

    Lookup - Website Profiler sends data to joinlookup.com. One other extension we have analysed sends data here.

Updated 15 October 2026amo-2938237