Accessibility Tools
Helpers for building accessible websites to WCAG 2.2. Check colour contrast and generate accessible palettes, simulate colour-vision deficiencies, inspect heading structure and link text, run basic automated HTML checks, test text-spacing and target-size requirements, and use interactive checklists for alt text and keyboard testing. Automated checks find only some problems, so every tool explains its limits and reminds you that a manual audit with assistive technology is still needed.
12 Accessibility Tools
Most popular first.
- WCAG Contrast CheckerCheck text and UI colour contrast against WCAG 2.2.Open Tool
- Contrast Ratio CalculatorContrast maths for any CSS colour, with transparency.Open Tool
- Color Blindness SimulatorPreview images and colours as colour-blind users may see.Open Tool
- Accessible Palette GeneratorTints, shades and colour harmonies with contrast info.Open Tool
- HTML Accessibility CheckerRule-based HTML accessibility scan with WCAG 2.2 references.Open Tool
- Heading Structure CheckerOutline headings and landmarks; flag skipped levels.Open Tool
- Alt Text ChecklistDecide what alt text an image needs and lint your own.Open Tool
- Keyboard Accessibility ChecklistInteractive keyboard test checklist with WCAG 2.2 criteria.Open Tool
- Link Text CheckerFind vague, empty or confusing link text.Open Tool
- ARIA Attribute ReferenceSearchable WAI-ARIA 1.2 roles, states and properties.Open Tool
- Target Size CheckerCheck control size and spacing against WCAG 2.5.8.Open Tool
- Text Spacing TesterApply WCAG 1.4.12 text spacing to HTML to find clipping.Open Tool
Frequently Asked Questions
What can I do with these Accessibility tools?
Contrast, colour-blindness, headings, links and WCAG checks.
Which Accessibility tools are most popular?
The most used are WCAG Contrast Checker, Color Contrast Ratio Calculator, Color Blindness Simulator. Tools are listed here in order of popularity.
Do I need to install anything or sign up?
No. Each tool opens in your browser, works without an account and is free to use. Files and text are processed on your device unless a tool clearly states otherwise.
More Developer & Web Subcategories
See all Developer & Web tools, every category or all 486 tools.