Good captions.
Better timing.
Convert, clean, and sync your subtitle files in seconds. A small, private toolkit for the finishing touches that matter.
No sign-up. Try a messy example in one click, then download the result.
Drop your subtitles here
A little cleanup goes a long way.
SRT or VTT · Up to 1 MiB each · 3 files / dayYour cleaned captions will appear here. 00:00:01,000 → 00:00:03,500 A better story starts here.
Review Original and After: SRT drops positioning, style blocks and advanced annotations.
Nothing lost in translation.
Add files to check timestamps, overlaps, numbering and more.
| File / cue | Check | Details |
|---|---|---|
| A clear timeline starts with a quick check. | ||
From first draft to final frame.
Same words.
A smoother workflow.
Choose your files, fine-tune your recipe, and preview the result. Download individually or keep the batch together in a ZIP.
UTF-8 files work best. Reports retain original cue ordinals, so you can find the exact source of an issue.
1 00:00:01,000 --> 00:00:03,500 A better story starts here.For +1,500 ms, 00:00:01 becomes 00:00:02.500.
A few things
worth knowing.
Do my subtitle files leave my device?
No. Parsing, diagnostics, conversion and ZIP generation all run in your browser. Caption files and their contents are never sent to a server.
What can I use for free?
Process 3 files per local calendar day, up to 1 MiB (1,048,576 bytes) each. Reapplying rules to files already in your workspace is free. Samples do not use your allowance.
Does this fix every timing problem automatically?
Sequence numbers are normalized and optional cleanup removes exact duplicates and empty cues. Overlaps are reported, not automatically retimed. Invalid timestamps block export so you can correct the source first.
What does Pro include?
Pro is $6.99/month for more files: no daily file allowance, up to 30 files per workspace, 10 MiB per file and 20 MiB total. Use your checkout email to restore Pro. Checkout is currently disabled; the free toolkit and example work without signing up.
Can I save my processing rules?
Yes. Save your recipe to restore format, shift, line length and cleanup options on your next visit. It stays in local browser storage.
Is Pro available?
Pro is $6.99/month. Checkout is currently disabled. Try and download the free example now, without an account.
Your captions. Your device.
No uploads, no AI processing. Just your browser doing good work.