SDH Caption QC Checker
Quality-check SDH (Subtitles for the Deaf and Hard-of-hearing) for reading speed, line length and timing — the accessibility deliverable studios require alongside dubs.
SDH (accessibility) — max 17 CPS, 42 chars/line, 3 lines, 0.833s min, 7s max
SDH includes speaker IDs and sound descriptions on top of dialogue, so it packs more text into the same time — making reading-speed and line-length QC even more important. This checks the mechanical limits (17 CPS, 42 CPL, up to 3 lines) so your accessibility track stays readable, not just complete.
🔒 Subtitles are processed entirely in your browser — never uploaded.
Quality-check SDH (Subtitles for the Deaf and Hard-of-hearing) for reading speed, line length and timing — the accessibility deliverable studios require alongside dubs.
About SDH Caption QC Checker
Quality-check SDH (Subtitles for the Deaf and Hard-of-hearing) for reading speed, line length and timing — the accessibility deliverable studios require alongside dubs. SDH includes speaker IDs and sound descriptions on top of dialogue, so it packs more text into the same time — making reading-speed and line-length QC even more important. This checks the mechanical limits (17 CPS, 42 CPL, up to 3 lines) so your accessibility track stays readable, not just complete.
How to use SDH Caption QC Checker
- 1Paste your subtitle file (SRT or WebVTT) into SDH Caption QC Checker, or open it from disk.
- 2The tool parses every cue and processes it in your browser.
- 3Review the result — flagged issues, converted output or statistics.
- 4Copy or download the corrected/converted file.
Why use SDH Caption QC Checker?
- ✓Runs entirely in your browser with instant, private results — no data leaves your device.
- ✓Built on a published reference: Netflix SDH style guide; FCC/CVAA accessibility requirements.
- ✓100% free with no sign-up, no watermark and no usage limits.
- ✓Works on any device — desktop, tablet or phone — and keeps working offline once loaded.
Frequently asked questions
What does SDH Caption QC Checker do?+
Quality-check SDH (Subtitles for the Deaf and Hard-of-hearing) for reading speed, line length and timing — the accessibility deliverable studios require alongside dubs. SDH includes speaker IDs and sound descriptions on top of dialogue, so it packs more text into the same time — making reading-speed and line-length QC even more important.
Is my data private?+
Yes. SDH Caption QC Checker runs entirely in your browser — your inputs are never uploaded, stored or logged.
What standard or source is SDH Caption QC Checker based on?+
It follows Netflix SDH style guide; FCC/CVAA accessibility requirements. Always confirm against the current official document, as specifications and rates can change.
Is SDH Caption QC Checker free to use?+
Yes — it is completely free with no account, no sign-up and no usage limits. There is no watermark and no paywall.
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