Accessibility Checker

Paste your webpage's HTML source to automatically detect accessibility issues based on WCAG 2.1.

Your HTML is processed entirely in the browser. Nothing is sent to any server.

How to Use

  1. STEP 1
    Open the webpage you want to check, right-click, and select 'View Page Source'
  2. STEP 2
    Select all the HTML source, copy it, and paste it into the text area
  3. STEP 3
    Optionally enter the target URL for reference, then click 'Run Check'
  4. STEP 4
    Review the results and prioritize fixing FAIL and WARN items first
  • This tool performs static HTML analysis. Content dynamically added by JavaScript is not checked
  • Some criteria like color contrast and focus visibility require manual verification
  • HTML data is processed entirely in your browser — nothing is sent to any external server
  • This checks representative WCAG 2.1 criteria but does not guarantee full compliance

Tips

1

When many items fail, start by fixing Level A criteria first for maximum impact

2

Aim for a score of 80+. After passing automated checks, also conduct manual testing

3

Testing with actual screen readers (NVDA, VoiceOver) is also important for real-world accessibility

FAQ

  • Q1

    Does entering a URL cause the tool to access external sites?

    No. The URL is recorded for reference only — no HTTP requests are made. HTML is processed entirely in your browser.

  • Q2

    What is WCAG?

    The Web Content Accessibility Guidelines (WCAG) are international accessibility standards published by the W3C. They have three conformance levels: A (minimum), AA (common standard), and AAA.

  • Q3

    Does a score of 100 mean my site is fully accessible?

    Not necessarily. Issues that can't be detected automatically (color contrast, focus indicators, screen reader compatibility, etc.) require separate manual testing. The score is a reference metric.

  • Q4

    Can it check content dynamically generated by JavaScript?

    No. This tool only analyzes static HTML. For dynamic content, use browser developer tools or browser extensions like axe DevTools.