Your files stay in this browser tab. Nothing is uploaded or saved.

Check a whole caption batch before release

Find strict timing and structure errors, preview only the changes you choose, and download an audit-ready bundle.

1. Add 5–50 SRT or VTT files

UTF-8 only · 2 MiB per file · 20 MiB per batch

Choose files

0 files selected

2. Choose changes

Everything is off by default. Warnings never change a file.

Remove UTF-8 BOM Canonicalize valid timestamps Renumber valid SRT cues Line endings Output format Global offset (milliseconds)Whole signed integer. Reading-speed warning (graphemes/second) Line-length warning (graphemes)

3. Review results

Add files and analyze them to see a batch report.

Optional local research question

Would you consider a one-time US$15 version if it reliably saved you time on future batches?

Yes No Not sure

This answer stays only in this tab and is cleared with the batch.

Check a whole caption batch before release

1. Add 5–50 SRT or VTT files

2. Choose changes

3. Review results

Optional local research question

What this version does—and does not do