Apply practical universal design approaches, including semantic HTML, to make websites and apps accessible.
A11Project
Use The A11Y Project checklist as a beginner’s guide to digital accessibility and web content requirements.
About A11Project
The A11Y Project checklist is a beginner's guide to digital accessibility for web content. It uses the Web Content Accessibility Guidelines (WCAG) as a reference point and targets many, but not all, level A and AA concerns. Each checklist item is tied to a corresponding WCAG success criterion, identified by a reference number and short title. The checklist is organized into areas such as content and global code, and it states that following it does not guarantee a site is accessible.
Key features
- Beginner-oriented checklist for digital accessibility and web content requirements
- Uses WCAG as its reference standard
- Explains WCAG levels A, AA, and AAA and their priorities
- Maps checklist items to specific WCAG success criteria by number and title
- Covers content and global code topics
- Targets many, but not all, level A and AA concerns
Best for: Beginners who want a practical starting point for reviewing web content against WCAG level A and AA concerns.
Good for
- Grounded in the WCAG shared standard used by individuals, organizations, and governments
- Each item is linked to a specific, testable WCAG success criterion
- Addresses issues covering a wide range of disability conditions
Watch out for
- Targets many, but not all, level A and AA concerns
- Does not guarantee that a site is accessible
- States there is no such thing as perfect accessibility or a fully accessible site
A11Project at a glance
- Website
- a11yproject.com/checklist
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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A11Project FAQ
Does the checklist guarantee my site is accessible?
No. The project says addressing the issues in the checklist will help improve the experience for everyone, but it does not guarantee accessibility and warns against promises of perfect or 100% accessibility.
What WCAG levels does the checklist reference?
It describes three levels: A (Essential), AA (Ideal Support), and AAA (Specialized Support). The project strives for AA compliance, and the checklist targets many, but not all, level A and AA concerns.
How are checklist items related to WCAG?
Each item has a corresponding WCAG success criterion, which is a specific, testable rule described by a reference number and short title. Where multiple criteria apply, the checklist identifies the most relevant one.
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