AUDIO & SUBTITLES · FREE · ON YOUR DEVICE

Get captions into time and format.

Convert basic SRT and WebVTT subtitles, shift every cue earlier or later, review overlaps and download captions or a transcript. Local, free and no login.

Free · No login · No upload. Inputs and results stay in this tab’s memory. Clear or leave to discard them; keep your own downloaded copies.

SRT or VTT sourceOr choose a subtitle file

Output formatShift all cues (milliseconds)

+1500 shows captions 1.5 seconds later. −1500 shows them earlier. Set 0 for format conversion only. Negative resulting times are rejected, not clipped.

Up to 2,000 cues, 100,000 characters / 400 KB. UTF-8, plain text and b/i/u tags only. Styling, positioning, NOTE/REGION blocks and metadata are rejected instead of silently removed. Cue IDs are regenerated in order.

Can I convert both SRT to VTT and VTT to SRT?

Yes, for basic text cues with valid timestamps. Set the shift to 0 for conversion only. Output uses UTF-8, millisecond precision and new sequential cue numbers. Cue order, supported text markup and text are retained.

Which direction fixes delayed subtitles?

If captions appear too late, enter a negative millisecond offset. If they appear too early, use a positive offset. For example, −1500 advances every cue by 1.5 seconds. Any negative resulting timestamp blocks export; no cue is clipped or removed.

Will conversion preserve all VTT features?

No. This release accepts basic cues, plain text and b/i/u tags. Header metadata, NOTE/STYLE/REGION blocks, cue positioning and other markup are rejected explicitly. It does not flatten rich subtitles or silently drop unsupported features. Keep the original file.

Does this translate or transcribe a video?

No. Supply an existing subtitle file or pasted captions. The transcript download removes timestamps only; it does not recognize speech, translate, remove repeated lines or strip markup. Overlap warnings flag timings for review without changing them.