# Smart Contrast Overlay

> Compare two products or texts side by side using AI-driven analysis.

Canonical page: [https://chrome-stats.com/d/smart-contrast-overlay](https://chrome-stats.com/d/smart-contrast-overlay)

## Overview

- **ID:** `smart-contrast-overlay`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** Alanna
- **Category:** feeds-news-blogging,appearance
- **Daily users:** 1
- **Version:** 1.0
- **Last updated:** 2025-09-06
- **First published:** 2025-09-03
- **Size:** 14 KB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/smart-contrast-overlay/)

## Description

Smart Contrast Overlay is a powerful tool for side-by-side comparison of two distinct pieces of content — whether you're evaluating products, text snippets, specs, or features. Powered by AI analysis, this extension breaks down similarities and key differences clearly in a visual overlay, making comparison fast, informative, and seamless.

Whether you're researching products on e-commerce platforms, comparing contracts, articles, or even comments — this tool ensures you're making decisions based on clarity, not guesswork.

⭐ Features:

Compare two selections (text or content blocks) in parallel.

AI-powered similarity and difference analysis.

Highlighted visual diff view for text.

Product comparison metrics like price, features, reviews.

Floating draggable overlay for in-page viewing.

Dark mode and theme-aware styling.

Works across most websites with text or product listings.

## Rankings

- #99,622 — Overall
- #89 — overlay
- #190 — e-commerce

## 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).

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