Is Highlight This: finds and marks words safe?

Clean risk

Automatically highlights your chosen words and phrases on web pages.

This extension lets you create keyword lists, organize them into groups, and mark matching text in the current browser tab. It can refresh highlights when pages reload or change, support options such as color-coded lists, regular expressions, case-sensitive matching, disabled sites, and import or export of settings. The description says data is stored locally and also mentions using word lists from Pastebin or Google Sheets.

Wim DeboelFirefox Add-ons
0Risk

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

Where it sends data

Destinations our analysis observed Highlight This: finds and marks words 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.

  • Google Sheets

    Highlight This: finds and marks words sends data to Google Sheets. Named as a recipient by 21 other extensions we have analysed.

  • Pastebin

    Highlight This: finds and marks words sends data to Pastebin. Named as a recipient in this extension's own analysis.

Updated 15 October 2026amo-1019375