# Contrast & Accessibility Checker

> rüft Webseiten auf Barrierefreiheit (WCAG AA/AAA), Farbkontraste, fehlende Alt-Texte und fehlerhafte Überschriften – entwickelt von helmstaedter.digital aus Mosbach.

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

## Overview

- **ID:** `contrast-accessibility-checker`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** helmstaedter.digital
- **Category:** web-development
- **Daily users:** 1
- **Version:** 1.1.0
- **Last updated:** 2025-10-16
- **First published:** 2025-10-13
- **Size:** 23 KB
- **Data as of:** 2026-09-08
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/contrast-accessibility-checker/)

## Description

Der „Contrast & Accessibility Checker“ ist eine einfache, aber leistungsstarke Browser-Erweiterung, um Webseiten auf Barrierefreiheit (Accessibility) zu prüfen.

Das Tool analysiert:
- Farbkontraste nach WCAG AA/AAA
- Fehlende oder leere ALT-Texte bei Bildern
- Die logische Überschriften-Hierarchie
- Alle Prüfungen erfolgen lokal im Browser – es werden keine Daten übertragen.
- Ideal für Webdesigner, Agenturen und Entwickler, die auf modernes, zugängliches Design achten.

Entwickelt von <a href="https://prod.outgoing.prod.webservices.mozgcp.net/v1/83e4c11b4a36ace6bb82214132d6507b0dd2467f737cea2a658a3168cb7ef843/https%3A//helmstaedter.digital" rel="nofollow">helmstaedter.digital</a>  –
Webdesign, Grafikdesign, Foto &amp; Video aus Mosbach.

## Rankings

- #105,722 — Overall
- #113 — visibility
- #164 — free access

## Permissions and access

### Permissions

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

## Safety

- **Risk impact:** Moderate 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).

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- [WCAG Contrast checker](https://chrome-stats.com/d/wcag-contrast-checker) — 4,071 users, 4.00 / 5
- [Accessibility Checker](https://chrome-stats.com/d/accessibility-checker-sl) — 1 users
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- [Color Contrast Checker](https://chrome-stats.com/d/color-contrast-checker)

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