Auto Highlight

Name: Auto Highlight
Rating: 4.459 (61 reviews)
Author: Juraj Mäsiar

🟨 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!

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Auto Highlight is an intuitive Chrome extension designed to automatically highlight, hide, and style important text on webpages, making it easier for you to spot key information instantly.

Key features include support for RegExp search to find precise matches, the ability to hide text by setting font size to zero or making it transparent, customizable styles such as background, text size, and color, and automatic synchronization across devices. This extension is ideal for researchers, shoppers, or any user wanting to emphasize or de-emphasize textual content while browsing. It also supports hiding or highlighting labels like "Free shipping" or "Out of stock", and includes a temporal highlight feature to mark keywords on every page visited.

As a privacy-conscious, independent developer product without ads, it offers powerful text management tools that blend easily into daily web use. Support the developer to keep this useful tool evolving!

Add-on Productivity Utilities Developer Tools Privacy & Security

By:

Daily users:

Rating:

Version:

5.3 Last updated: 2023-11-03

Version code:

5645492

Creation date:

2020-07-21

Risk:

Permissions:

contextMenus
storage
scripting
alarms
activeTab
<all_urls>

Size:

1.92MB

Email:

ad*****@fastaddons.com

URLs:

Website

Full description:

Source:

Firefox Browser Add-ons

Data ingested on:

2025-07-07

Ranking

# 2,090 ▲ 29

Other rankings

#259 in Search Tools ▲ 2

#332 in Appearance ▲ 4

#10 in delight keyword 1

#11 in highlighter keyword 51

#12 in auto keyword 64 ▲ 3

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Other platforms

Auto Highlight (v5.3)

20,000 4.68

(77)

Auto Highlight (v5.3)

6,969 4.80

(8)

User reviews

Users appreciate Auto Highlight's powerful, customizable highlighting capabilities, especially its regex support and useful visual markers. It functions well on both desktop and Android Firefox, aiding productivity by easily identifying key terms. However, there are repeated issues with add-on stability, including it sometimes stopping work silently. Users also wish for enhanced rule management via grouping, PDF highlighting support, and improvements to side panel behavior and the 'copy' rule feature. Despite these cons, the add-on is highly recommended and considered very useful overall.

Pros

Highly customizable keyword highlighting, including regular expression support.
Works reliably most of the time and offers good stability.
Provides visual indicators next to the scrollbar for easier navigation of highlights.
Available and functional on Firefox Android as well as desktop platforms.
Very useful for highlighting specific terms or customer names, aiding productivity.

Cons

Occasional malfunction or complete stoppage of the add-on without clear error messages.
Lack of organizational features such as grouping rules with override settings.
Highlighting function does not work within PDFs, limiting usability for research purposes.
Side screen scroll highlights on Android can be cumbersome, blocking words and clustering together.
Issues with the 'copy' search rule feature not working as expected, causing tedious manual rule copying.

Recent reviews

by Fi*****, 2025-05-22

by Fi*****, 2025-03-25

by Ma*****, 2025-03-22

View all user reviews ›

Extension safety

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Auto Highlight requires a few sensitive permissions. Exercise caution before installing.

Risk impact analysis details

Critical Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Browser Add-ons, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Auto Highlight has earned a fairly good reputation and likely can be trusted.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
Good **** ********* *** **** **** *******

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