WCAG Compliance CheckCompare tool types rather than unsupported rankings
Markup analysers, running-browser scanners, keyboard tests, assistive-technology reviews and document evaluators answer different questions. Compare them against your actual scope and methods. This page does not rank untested vendors or imply that a single score is a complete audit.
Static versus running-browser evidence
This site’s HTML checker inspects supplied markup without executing it or fetching styles. A running-browser scanner can observe the rendered document and current state. Neither automatically validates the quality of an alt description, the clarity of instructions or every user journey.
Worked evaluation set
Use a synthetic page with an unlabelled field, a keyboard focus defect in a modal and an inaccurate image description. Compare which defects each method finds, whether it identifies the affected state and whether the reported fix is actionable. Do not mark the undetected defects absent merely because a scanner is green.
Selection criteria
Review supported standards, rule transparency, state coverage, accessibility of the tool itself, evidence export, reproducibility and privacy. Ask whether submitted content is uploaded and whether external resources execute. Use actual existing quotes for commercial terms; no vendor prices or capabilities are invented here.
Combine methods in a review plan
Use automation for repeatable checks, manual interaction testing for flows and assistive technology for relevant user experiences. Retain the version and method behind each finding. The best fit is the coverage you can demonstrate for your service, not the largest count of automated checks.