A little earlier.
Or right on time.
Move every subtitle forward or backward by an exact number of milliseconds. Preview your adjusted timestamps before exporting SRT or VTT.
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 00:00:02,500 --> 00:00:05,000 A better story starts here.For +1,500 ms, 00:00:01 becomes 00:00:02.500.
A few things
worth knowing.
How do I delay subtitles?
Enter a positive shift in milliseconds: 1500 delays every cue by 1.5 seconds. A negative value moves the subtitles earlier.
What if a shift creates a negative timestamp?
Export is blocked and the diagnostic report identifies each affected cue. Reduce the negative shift until all cues start at or after zero.
Does shifting change subtitle duration?
No. The same offset is applied to each start and end time. Cue duration and spacing stay the same.
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.