Is Web Highlights: PDF & Web Highlighter + Notes safe?

Clean risk

Highlight web pages and PDFs, add notes, and organize saved research in Firefox.

This extension lets you highlight text on websites and PDFs, use multiple colors, add notes, save pages as bookmarks, tag items, and search your saved highlights. It can work offline for basic use, and the description says you can create an account to sync highlights across devices through its web app. It also supports exports to formats and tools such as PDF, HTML, Markdown, Notion, Obsidian, and Capacities.

Web Highlights GmbHFirefox Add-ons
0Risk
Who publishes it

Web Highlights GmbH - no other listings under this identity, 8 shared hostnames

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

Publisher
Web Highlights GmbH
Website
web-highlights.com

Shared hosts - 8 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.

ldi.nrw.de
Also called by 1 other listing: Youtube Highlighter & AI Summary - Web Highlights
api.web-highlights.com
Also called by 4 other listings, including Web Highlights, Reader Mode, Youtube Highlighter & AI Summary - Web Highlights
app.web-highlights.com
Also called by 4 other listings, including Web Highlights, Reader Mode, Youtube Highlighter & AI Summary - Web Highlights
email.web-highlights.com
Also called by 4 other listings, including Web Highlights, Reader Mode, Youtube Highlighter & AI Summary - Web Highlights
app.capacities.io
Also called by 5 other listings, including Web Highlights, Reader Mode, Capacities Web Extension
marius-bongarts.de
Also called by 5 other listings
pre.web-highlights.com
Also called by 5 other listings
web-highlights.com
Also called by 6 other listings, including PresentBoard - Custom New Tab Themes & Widget Layouts

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 Web Highlights: PDF & Web Highlighter + Notes 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.

  • web-highlights.com

    Web Highlights: PDF & Web Highlighter + Notes sends data to web-highlights.com. No other extension we have analysed sends data here.

  • Notion

    Web Highlights: PDF & Web Highlighter + Notes sends data to Notion. Named as a recipient by 9 other extensions we have analysed.

  • Obsidian

    Web Highlights: PDF & Web Highlighter + Notes sends data to Obsidian. Named as a recipient by 5 other extensions we have analysed.

  • Capacities

    Web Highlights: PDF & Web Highlighter + Notes sends data to Capacities. Named as a recipient in this extension's own analysis.

Updated 15 October 2026amo-2893360