Subtitle Editor: Edit SRT & VTT Timing Online Free
Fix subtitle timing against your own video, in your browser
Drop your subtitle file here
SRT, VTT · add your video next to check the timing
- 99%
- Accuracy
- 99+
- Languages
- Anytime
- Cancel, no contract
- Free
- 10 min to start
Why use Subtitle Editor?
Watch Your Video While You Edit
Add your video or audio and the subtitles play over it live. Every timing change is visible on the frame it lands on, so you never have to guess.
Visual Timeline
Drag a segment to move it or drag either edge to retime it. Zoom in to work at tenths of a second, or set the start and end from the playhead.
Split and Merge Segments
Cut a long segment in two at the playhead, or merge two short ones into a single caption. The text splits at the word boundary, not mid-word.
Bulk Time Shift
Shift every subtitle forward or backward at once when the whole file drifts against the video.
SRT, VTT and ASS Export
Save to SRT or VTT for any player, or to ASS when you need styled captions for burning into a video.
Nothing Is Uploaded
The subtitle file and the video are both read in the browser. Neither is sent to a server, so even a large video stays on your machine.
How it works
Load Subtitles and Video
Drop in your SRT or VTT file, then add the video or audio it belongs to. The captions play over it live.
Fix the Timing
Drag segments on the timeline, snap a start or end to the playhead, split a long caption or merge two short ones.
Download Edited File
Save the corrected file as SRT, VTT or ASS, ready for any player or for burning into your video.
Subtitle Editor vs typing it out by hand
Why upload-and-go beats manual transcription every time.
| Capability | CATT | Manual transcription |
|---|---|---|
| Time to first draft | Minutes per file | 8 to 10 hours per audio hour |
| Accuracy | 99% on clean audio | Depends on the typist |
| Speaker labels | Automatic | Tagged by hand |
| Languages | 99+ supported | Whatever you speak |
| Exports | TXT, DOCX, PDF, SRT, VTT | Whatever you build by hand |
| Cost | Free for the first 10 minutes | Your time, every time |
Simple pricing
10 free minutes to start, no card needed. Paid plans start at $9.99.
Free
- 10 free minutes to start (one time, up to 3 files a day)
- Speaker detection
- Full transcripts you can copy anytime
Cancel anytime. Try the free plan before you upgrade. See all plans
Frequently asked questions
Yes, and this is the point of the tool. Add your video or audio file and it plays with your subtitles drawn over it, so you can watch a caption appear and check it against the frame instead of typing timestamps blind.
Yes. Shift every subtitle at once when the whole file drifts, or fix one segment at a time by dragging it on the timeline, dragging its edges, or snapping its start or end to wherever the playhead is.
Yes. Park the playhead inside a segment and split it there, and the text divides at the nearest word boundary. Merging joins a segment with the one after it into a single caption spanning both.
SRT, VTT and ASS. SRT and VTT work on every player and platform. ASS carries styling and is the format used when captions are burned into a video.
Yes. The editor fully supports both SRT (SubRip) and VTT (WebVTT) formats. Open either format and save in either format.
No hard limit. A 2,000 cue file, about the length of a feature film subtitle, loads in roughly a second and stays responsive while you edit individual cues. Every cue is kept on the page, so on a file that size an action that touches the whole file, like switching the export format, takes a second or two.
No. The subtitle editor runs entirely in your browser. Your subtitle file and your video are both read locally and never sent to any server.