# Highlighter SEO

> SEO Analyzer Extension for Firefox, Highlight H1, H2, H3 tags and links with Highlighter

Canonical page: [https://chrome-stats.com/d/thehighlighter](https://chrome-stats.com/d/thehighlighter)

## Overview

- **ID:** `thehighlighter`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** William
- **Category:** web-development
- **Daily users:** 10
- **Version:** 4.1
- **Last updated:** 2026-05-26
- **First published:** 2023-05-30
- **Size:** 25 MB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/thehighlighter/)
- **Website:** [https://ohseo.fr](https://ohseo.fr/)

## Description

TheHighlighter is a Firefox add-on that provides a SEO tool to visualize the structure and design of a webpage. It highlights H1, H2, H3 tags, and links, and also displays the word count of paragraphs and emphasis elements.

## Rankings

- #33,667 — Overall
- #31 — seo
- #57 — highlighter
- #152 — ux
- #209 — opportunity

## Permissions and access

### Permissions

- `activeTab`
- `scripting`
- `tabs`
- `webRequest`
- `storage`

### Host permissions

- `http://*/*`
- `https://*/*`

### Content script matches

- `*`

## Safety

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

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- 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).

## Similar extensions and apps

- [Smart SEO Highlighter](https://chrome-stats.com/d/smart-seo-highlighter) — 7 users
- [SEO ToolBox Pro](https://chrome-stats.com/d/seo-toolbox-pro)
- [MozBar](https://chrome-stats.com/d/mozbar-firefox) — 196 users, 5.00 / 5
- [SEO Analyzer](https://chrome-stats.com/d/seo-analyzer) — 1 users
- [SEO All](https://chrome-stats.com/d/seo-all) — 1 users
- [SEO Optimizer](https://chrome-stats.com/d/seo-optimizer) — 1 users
- [SEO Helper](https://chrome-stats.com/d/seo-helper) — 1 users
- [SEO Tool Extension](https://chrome-stats.com/d/seo-tool-extension) — 111 users
- [SEO Check by Gyaner](https://chrome-stats.com/d/seo-check-by-gyaner) — 3 users, 5.00 / 5
- [On-page SEO analyzer](https://chrome-stats.com/d/on-page-seo-analyzer) — 1 users
- [SEOInfo](https://chrome-stats.com/d/seoinfo) — 251 users, 4.36 / 5
- [SEO SEO](https://chrome-stats.com/d/seo-seo) — 13 users

---

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