# Visual Diff Overlay

> Highlights the differences between two selected texts.

Canonical page: [https://chrome-stats.com/d/visual-diff-overlay?hl=ja](https://chrome-stats.com/d/visual-diff-overlay?hl=ja)

## Overview

- **ID:** `visual-diff-overlay`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Luther
- **Category:** feeds-news-blogging
- **Version:** 1.0
- **Last updated:** 2025-09-29
- **First published:** 2025-09-26
- **Size:** 12 KB
- **Data as of:** 2026-09-07
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/visual-diff-overlay/)

## Description

Visual Diff Overlay scans two text blocks and highlights words, phrases, or sentences that differ. Useful for editing, reviewing contracts, or detecting subtle changes in similar content.

## Rankings

- #147,620 — Overall
- #146 — overlay

## Permissions and access

### Permissions

- `contextMenus`
- `scripting`
- `activeTab`
- `storage`

### Host permissions

- `<all_urls>`

## Safety

- **Risk impact:** Moderate risk impact
- **Risk likelihood:** Moderate 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).

## Similar extensions and apps

- [Overlay Diff Reader](https://chrome-stats.com/d/overlay-diff-reader) — 1 users
- [Comparison Overlay Highlighter](https://chrome-stats.com/d/comparison-overlay-highlighter)
- [Text Diff](https://chrome-stats.com/d/text-diff) — 26 users
- [Smart Overlay Toggle View](https://chrome-stats.com/d/smart-overlay-toggle-view)
- [Compact Comparison Overlay](https://chrome-stats.com/d/compact-comparison-overlay)
- [Smart Contrast Overlay](https://chrome-stats.com/d/smart-contrast-overlay) — 1 users
- [compare two text](https://chrome-stats.com/d/compare-two-text)
- [Text Diff](https://chrome-stats.com/d/textdiff) — 24 users
- [Smart Overlay Diff Exporter](https://chrome-stats.com/d/smart-overlay-diff-exporter)
- [Dual Text Viewer](https://chrome-stats.com/d/dual-text-viewer)
- [Smart Comparison Overlay](https://chrome-stats.com/d/smart-comparison-overlay)
- [Comparison Overlay Notes](https://chrome-stats.com/d/comparison-overlay-notes)

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Source: [Chrome-Stats](https://chrome-stats.com/d/visual-diff-overlay?hl=ja)