Best Highlighter Firefox Extensions (2025 Guide)

Explore browser extensions that make highlighting and annotating web content a breeze. These tools help you emphasize important information, organize your research, and enhance your online reading experience.

Here is our list of the best Firefox extensions in the Highlighter category:

9.8
Web Highlights
This extension is verified by us, and we’re in direct contact with the owner. Tools with our verification badge are ad-free and prioritized at the top of our listings.
With Web Highlights, you can easily highlight text on any website or PDF and create notes. It's free and easy to use without signing up. In our eyes the best online PDF and web highlighter extension.
Note Taking Highlighter

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