# 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! 🔄️ Synchronize highlighter rules across devices.

Canonical page: [https://chrome-stats.com/d/auto\_highlight](https://chrome-stats.com/d/auto_highlight)

## Overview

- **ID:** `auto_highlight`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Juraj Mäsiar
- **Category:** search-tools,appearance,shopping
- **Daily users:** 2,204
- **Weekly downloads:** 95
- **Rating:** 4.56 / 5 (71 ratings)
- **Version:** 5.3
- **Last updated:** 2023-11-03
- **First published:** 2020-07-21
- **Size:** 1.92 MB
- **Data as of:** 2026-09-06
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/auto_highlight/)
- **Website:** [https://github.com/fastaddons/AutoHighlight/issues](https://github.com/fastaddons/AutoHighlight/issues)

## Description

**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!

## Rankings

- #2,073 — Overall
- #82 — Shopping
- #244 — Search Tools
- #333 — Appearance
- #8 — highlighter
- #10 — delight

## Permissions and access

### Permissions

- `contextMenus`
- `storage`
- `scripting`
- `alarms`
- `activeTab`
- `<all_urls>`

### Content script matches

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Allows access to all websites, posing a significant security risk as it can monitor and modify data from any visited site.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Review summary

Users broadly praise Auto Highlight for reliable, customizable keyword highlighting and frequent daily use that saves time. They highlight its versatility and stability, with many noting it does exactly what it promises and offers per-word customization. However, reviewers want more features and better UX: grouping rules, CSS-limited search, multi-word phrasing, and formatting options. A couple of users also point out a need for easier access (context-menu quick highlight) and improvements when handling large sets of highlights. Overall, it's effective but could benefit from more customization and streamlined UI.

### Pros

- Reliable and effective highlighting that does exactly what it promises.
- Highly customizable per word and per rule.
- Great for daily use and saves time on repetitive searches.
- Versatile and stable extension.
- One of the few Firefox highlighting add-ons that actually works well.

### Cons

- Requests for grouping rules, CSS selectors to limit search, multi-word phrase support, and text formatting options.
- Lacks a quick highlight via context menu; currently relies on a dialog.

## Similar extensions and apps

- [Easy Highlight - Auto Highlight](https://chrome-stats.com/d/easy-highlight-auto-highlight) — 1 users
- [Auto Text Highlighter](https://chrome-stats.com/d/auto-text-highlighter) — 4 users
- [Highlight text](https://chrome-stats.com/d/highlight-texts) — 59 users, 4.00 / 5
- [Keyword Highlighter](https://chrome-stats.com/d/keyword-highlighter-rs) — 1 users
- [Custom Highlight Color](https://chrome-stats.com/d/custom-highlight-color) — 8 users
- [Highlight This: finds and marks words](https://chrome-stats.com/d/highlightthis) — 2,635 users, 3.99 / 5
- [Highlighter for the Web - Mark my Word](https://chrome-stats.com/d/mark-my-word) — 659 users, 4.38 / 5
- [Highlight Sync](https://chrome-stats.com/d/highlight-sync) — 1 users
- [Marks: Text Highlighter](https://chrome-stats.com/d/marks-text-highlighter) — 370 users, 5.00 / 5
- [Highlighter](https://chrome-stats.com/d/highlighter-extension) — 457 users, 4.25 / 5
- [Text Highlight](https://chrome-stats.com/d/text-highlight) — 2 users
- [Text Highlighter](https://chrome-stats.com/d/text-highlight-pro) — 3 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/auto_highlight)