Skip to main content
Free Tool — No Signup Required

Free Website
Accessibility Checker

WCAG 2.1 Level A & AA · ADA · RPwD Act 2016 · Screen Reader · Keyboard Navigation · Alt Text

Instantly scan any website for WCAG 2.1 accessibility issues — alt text, form labels, heading structure, keyboard navigation, colour contrast and more.

Free · No signup · Results in ~20 seconds · 5 scans per hour
WCAG 2.1 Level A WCAG 2.1 Level AA 🇮🇳 RPwD Act 2016
🖼️
Image Alt Text
Check if all images have descriptive alt text for screen reader users.
📝
Form Labels
Verify every form input is properly labelled for assistive technologies.
🔤
Heading Structure
Check logical H1→H2→H3 hierarchy that screen readers use to navigate.
⌨️
Keyboard Navigation
Detect if focus indicators are hidden — critical for keyboard-only users.
🎨
Colour Contrast
Identify obvious colour contrast issues that affect users with low vision.
🔍
ARIA Landmarks
Check for semantic landmarks that help screen reader users navigate pages.

What This Tool Checks

15 WCAG 2.1 criteria across Level A and Level AA

🌐
Page Language
WCAG 3.1.1 Level A — lang attribute on HTML element
📄
Page Title
WCAG 2.4.2 Level A — descriptive title tag
🖼️
Image Alt Text
WCAG 1.1.1 Level A — all images have alt attributes
📝
Form Labels
WCAG 1.3.1 Level A — all inputs have labels
🔤
Heading Structure
WCAG 1.3.1 Level A — logical H1→H2→H3 hierarchy
⏭️
Skip Navigation
WCAG 2.4.1 Level A — skip to main content link
🔗
Descriptive Links
WCAG 2.4.4 Level A — no "click here" or "read more"
🔘
Button Names
WCAG 4.1.2 Level A — all buttons have accessible names
🪟
iFrame Titles
WCAG 4.1.2 Level A — all iframes have title attributes
🔍
Viewport Zoom
WCAG 1.4.4 Level AA — zoom not blocked
🎨
Colour Contrast
WCAG 1.4.3 Level AA — no obvious contrast issues
⌨️
Focus Indicator
WCAG 2.4.7 Level AA — focus not hidden by CSS

Frequently Asked Questions

Everything about WCAG and web accessibility

What is WCAG 2.1? +

WCAG 2.1 (Web Content Accessibility Guidelines) is the international standard for web accessibility published by the W3C. It defines how to make web content accessible to people with disabilities. It has three levels: A (minimum), AA (standard — required by most laws), and AAA (enhanced).

Does India have website accessibility laws? +

Yes. The Rights of Persons with Disabilities (RPwD) Act 2016 mandates accessibility for government websites. The Guidelines for Indian Government Websites (GIGW) require WCAG 2.0 Level AA compliance. Private sector enforcement is increasing as India's digital economy grows.

What is the difference between Level A and Level AA? +

Level A covers the most critical barriers that completely prevent disabled users from accessing content. Level AA is the standard recommended for most websites and required by most laws including ADA, EAA and India's GIGW. Level AA includes all Level A criteria plus colour contrast ratios, focus visibility, and more.

How accurate is this accessibility checker? +

The tool performs static HTML analysis and is highly accurate for server-rendered websites. JavaScript-heavy websites (React, Vue, Angular) may show reduced accuracy since content loads dynamically. For a complete audit, combine this tool with manual testing using a screen reader like NVDA or VoiceOver.

Is this tool free? +

Yes, completely free. No signup, no credit card required. Scan up to 5 websites per hour. For unlimited automated weekly scans across all your client websites, start a free 14-day trial of Alert91.