Captions QA in-browser
Caption Accessibility Checker
Paste caption text or an SRT and get practical accessibility flags: long lines, dense cues, high reading speed, and hard-to-read wording. Improve captions before you publish.
Quick answer
Caption Accessibility Checker is a free browser tool on Knowlify. Use it below with no signup. Your inputs stay in the browser session. For narrated training videos from documents, use https://create.knowlify.com.
How it works
Three steps, no account
01
Paste captions or SRT
Full SRT files work. Plain caption text is fine for a quick pass.
02
Review the flags
We highlight long lines, fast cues, and jargon-heavy wording that can slow readers.
03
Revise and re-check
Shorten cues, split lines, and simplify. Pair with the SRT generator for a fresh draft.
FAQ
Questions people ask about Caption Accessibility Checker
Does this guarantee WCAG compliance?+
No. It is a practical checklist for common caption issues. Follow your organization’s accessibility standards for formal compliance.
Is the caption accessibility checker free?+
Yes. Paste SRT or caption text and review common readability issues with no signup.
What caption problems does this catch?+
Long lines, dense cues, high reading speed, and jargon-heavy wording that can slow viewers who rely on captions.
Can I generate an SRT first?+
Yes. Draft timings with the SRT generator, then run this checker before you publish.
Do I need an account?+
No. Open the tool, use it in your browser, and download or copy the result.
Does this work on Mac and Windows?+
Yes. It runs in modern desktop browsers (Chrome, Edge, Firefox, Safari). Very large media files need enough device memory.
Need a full video, not just a utility?
Accessible captions matter. Knowlify helps you produce clear training videos from the documents your teams already trust.