Auto Highlight
🟨 Auto Highlight will help you see what's important on the web! ✅
⚡ Supports RegExp search and many style and highlight options ⭕
🥷 Hide text by setting font size to zero!
Auto Highlight - Text Marker and Searcher Add-On
Auto Highlight is a fully automatic and easy to use text marker, highlighter, eraser, searcher, and style fixer add-on for Firefox. It supports RegExp search, offers many style and highlight options, and allows you to hide text by setting font size to zero. It also supports advanced search options using regular expressions, synchronization to all your devices, and much more.
Add-on stats
Weekly download count: 94
Firefox on Android: Yes
Risk impact: Moderate risk impact 
Risk likelihood:
Manifest version: 2
Permissions:
- contextMenus
- storage
- scripting
- alarms
- activeTab
- <all_urls>
Size: 2.02M
Email: ad*****@fastaddons.com
URLs: Website
Ranking
Other platforms
Not available on Android
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Add-on summary
🟨 Auto Highlight is a fully automatic and easy to use text marker / highlighter / eraser / searcher / style fixer. No need to use search anymore to find important information! 🎉
⭐ TOP FEATURES:
- highlight keywords like: 1080p, HDR, 4K, x265, HEVC, 5.1
- hide text - by changing font size to zero or by making it transparent
- advanced search options using regular expressions (regexp), exact match, ignore diacritics and more
- change style - background, text size and color
- automatic synchronization 🔄 to all your devices (using native Firefox Sync.)
- highlight "Free shipping", "Out of stock" and other important labels
- doing research about specific topic? Use "Temporal highlight" feature to highlight keywords on every page.
❤ Support independent developer and a Friend of Add-ons:
- I'm full-time add-on developer and your donation is my only income. There are no ads in my add-ons! ☕ Please support my work by: Thank you! :) Your donation will help me keep this add-on working in future versions of Firefox!
🔒 Privacy Policy: https://github.com/fastaddons/AutoHighlight/blob/master/PRIVACY_POLICY.md
See moreUser reviews
These summaries are automatically generated weekly using AI based on recent user reviews.
Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate,
spammy, or outdated. Pros
- Versatile and customizable for highlighting specific keywords or phrases
- Works on both desktop and Firefox Android versions
- Excellent regular expression support, making it unique among similar add-ons
- The right scrollbar markers help locate highlighted text easily
- Stability and reliability in normal usage scenarios
Cons
- Occasionally alters content on web pages
- PDF highlighting support is lacking
- Issues with functionality after tab switching or long periods away from the tab
- User interface elements like color markers may not align correctly with text highlights
- Some users reported it stopped working or had setup issues
Most mentioned
- Customization and versatility of highlighting rules
- The need for PDF highlighting functionality
- Issues with add-on functionality after switching tabs
- Regular expression support as a strong feature
- Problems with color marker alignment on the scrollbar
User reviews
by Myro~n, 2025-01-05
Excellent!!,....Very versatile, stable and simply the "Best" to use ...Keep up the great work!!!
by Firefox user 18702040, 2024-11-25
please append "Bold, Italic, Underline" with "All Caps"
by 🔥🦊, 2024-09-01
Add-on safety
Risk impact
Auto Highlight requires a few sensitive permissions. Exercise caution before installing.
Risk likelihood
Auto Highlight has earned a fairly good reputation and likely can be trusted.
Upgrade to see risk analysis details