Read me

Mechanical accessibility check for the HTML. Please paste your HTML in the textarea of ​​HTML Source or enter target URL to URL in Validation and send it. Display accessibility checkpoints and their commentary.

In the case of check by URL, in addition to checking accessibility, you can check images and alt.

Name of service

"A11yc Accessibility Validation Service" Short version is "A11yc AVS".


Collected information


Technical information



If there is a request or correction part on the expression of the function, commentary, etc., please send us email ( or Twitter.