Colour Contrast Checker
Check text and background colours against WCAG AA and AAA, with a live preview.
Open the contrast checkerAccessibility Resources
Checklists, certification study guides, a glossary and hands-on tools — all free, no sign-up required. The two products we build are listed at the end.
Free tools
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.
Open the heading checkerAccessibility Statement Generator
Generate a ready-to-use website accessibility statement in minutes.
Open the generatorBulk Accessible PDF Generator
Turn a CSV into a ZIP of tagged, accessible PDFs — one per row.
Open the PDF generatorAll free tools
Browse the full set of A11ytek's free accessibility tools.
View all toolsChecklists & guides
Plain-English guides to the standards and the work.
Interactive WCAG 2.2 Checklist
What WCAG 2.2 Level A and AA ask for, in plain English: tick each item off, add notes and export a report. Filter by POUR principle or by what AODA requires.
Open 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 guideCPACC Exam Countdown
What to do in the final month, the last week and the day before the exam.
Read the countdown planWAS Study Guide
How to prepare for the technical Web Accessibility Specialist exam.
Read the guideWAS Exam Countdown
What to do in the final month, the last week and the day before the exam.
Read the countdown planADS Certification Guide
What the Accessible Document Specialist credential involves.
Read the guideADS Exam Countdown
What to do in the final month, the last week and the day before the exam.
Read the countdown planCPACC vs WAS vs CPWA
Which IAAP certification to take, and how they fit together.
Compare themFree course lessons
A complete lesson from each of our three exam preparation courses, published in full. No sign-in required.
CPACC: Models of Disability
Seven models, what each gets right and wrong, and how to spot one at work when nobody names it.
Read the free lessonWAS: The Standards Landscape
What WCAG, ARIA, ATAG and EN 301 549 each govern, and how to tell them apart.
Read the free lessonADS: Document Standards
PDF/UA, ISO 32000-1, the Matterhorn Protocol, WCAG and the Marrakesh Treaty, and which answers what.
Read the free lessonTools we build
Everything above is free. These two are paid products, and both let you try them before you pay.
A11ytek Monitor
Continuous accessibility monitoring, hosted and managed by us: your site crawled on a schedule, every page tested against WCAG, and your score tracked over time. Also available self-hosted for closed networks.
See what it doesA11ytek Exam Prep
A written course (57 lessons) and 17,000+ practice questions for CPACC, WAS and ADS, together in one subscription. Try 100 questions and the first lesson of each course free, no card needed.