Text
Fix typos, names and line breaks straight in the cue.
Subtitle file editor
Edit a subtitle file in the browser
Already have the subtitles and something is off — a typo, a line that comes half a second late, the whole file drifting? Open it here and fix it.
Drop a subtitle file here
SRT, VTT or ASS up to 5 MB. The file stays in your browser and is never uploaded.
What it does
Timings
Correct the start and end of any cue, or shift the whole track at once when everything lags.
Structure
Add a missing cue, delete an empty one — numbering is rebuilt on download.
Format
Open one format and save another: SRT, VTT and ASS in any direction.
The file does not leave your browser
There is no upload. The file is read locally, edited in the page and handed back as a download — nothing is sent to a server, so there is nothing to store and nothing to delete afterwards.
That also means it works with no account, and keeps working with the network off once the page is open.
Broken characters and other classics
Question marks or gibberish instead of text is an encoding problem, not a damaged file. Subtitles from the 2000s are usually in a single-byte encoding, and Windows-1251 is the usual suspect for Russian. We detect that on open, re-decode the file, and save it back as UTF-8 — which is what every modern player expects.
Subtitles that do not appear at all are usually named wrong: most players match a sidecar file to the video by name, so «clip.mp4» wants «clip.srt» beside it.
Subtitles that drift are a timing problem, and that is what the shift control is for: a negative value moves everything earlier, a positive one later.
Styling that disappeared is a format problem. SRT and VTT physically cannot store a font, a colour or a position — a design pushed through them arrives as the player's default. ASS can, and this editor keeps the ASS style table intact when you save.
What it checks
A cue whose end is at or before its start — the player draws it for zero time, so the line never appears.
A cue that overlaps the previous one, which is what makes two lines fight over the same moment.
A cue with no text, usually left behind after an edit.
What it is not
It does not transcribe, translate or render video, and it does not show the video next to the subtitles. If you have a video and no subtitles at all, that is the other tool: it recognises the speech, times the words, styles the captions and exports the finished file.
FAQ
SRT, VTT and ASS (including SSA). You can save to any of the three regardless of what you opened, so the editor doubles as a converter.