Free Accessibility Checker Online - Fast & Private Web Utility
Analyze HTML for common accessibility issues and WCAG compliance.
Runs entirely in your browser - your files are never uploaded
What is Accessibility Checker?
Accessibility Checker is a free, web-based utility designed for instant, local accessibility tools tasks. It allows users to compute, format, convert, or edit data directly in their browser without installing software or registering an account.
- 100% Free & Unlimited Usage
- 0% File Uploads (100% Client-Side Privacy)
- Instant Real-Time Calculations
- Mobile, Tablet & Desktop Compatible
How to use Accessibility Checker
Select or Enter Input
Provide your source file or type your values into Accessibility Checker.
Configure Settings
Adjust parameters, formatting options, or units in real-time.
Get Instant Output
Download the final processed file or copy the generated output.
Features & Overview of Accessibility Checker
The Accessibility Checker performs a instant client-side audit on your HTML markup to detect common WCAG 2.1 accessibility violations.
Scans for missing image alt tags, unlabelled form inputs, duplicate element IDs, invalid heading nesting, empty links, and missing ARIA properties.
Frequently Asked Questions about Accessibility Checker
Answers to common questions regarding Accessibility Checker features, data privacy, and usage.
Related Accessibility Tools
Color Contrast Checker
Check WCAG AA and AAA contrast ratios between foreground and background colors.
Check ContrastSVG to PNG Converter
Convert SVG vector files into high-quality PNG images instantly.
Convert to PNGCSV to Excel Converter
Convert CSV files into downloadable Excel XLSX spreadsheets.
Convert to ExcelImage Compressor
Shrink JPG, PNG and WebP files without visible quality loss.
Compress ImageImage Resizer
Resize images to exact pixel dimensions or by percentage.
Resize ImageImage Converter
Convert between PNG, JPG and WebP in one click.
Convert Image