Colour Contrast Checker
Check text and background colours against WCAG AA and AAA, with a live preview.
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Everything free in one place — checklists, certification study guides, a glossary, and hands-on tools. No sign-up required.
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Hands-on tools that run right in your browser.
Heading & Alt-Text Checker
Paste HTML to check heading structure and find images missing alt text.
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Generate a ready-to-use website accessibility statement in minutes.
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Browse the full set of A11ytek's free accessibility tools.
View all toolsChecklists & guides
Plain-English guides to the standards and the work.
WCAG 2.1 AA Checklist
What WCAG 2.1 Level AA asks for, organised by the POUR principles.
Read the checklistAODA Compliance Checklist
Who must comply in Ontario, the WCAG standard required, and how to meet it.
Read the checklistPDF Accessibility Checklist
The 12 steps to a WCAG- and PDF/UA-compliant PDF.
Read the checklistAccessible Documents Guide
Make accessible Word, PowerPoint, and Excel files and export clean PDFs.
Read the guideAccessibility Glossary
Key accessibility terms defined in plain English.
Open the glossaryCertification study guides
Preparing for an IAAP exam? Start here.
CPACC Study Guide
How to pass the foundational IAAP CPACC exam.
Read the guideWAS Study Guide
How to prepare for the technical Web Accessibility Specialist exam.
Read the guideADS Certification Guide
What the Accessible Document Specialist credential involves.
Read the guideCPACC vs WAS vs CPWA
Which IAAP certification to take, and how they fit together.
Compare themExam Prep App
Thousands of verified practice questions for CPACC, WAS, and ADS.
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