SRT editor, free: edit, shift and sync subtitles in your browser
An online SRT editor and viewer: open an SRT, VTT, SBV, ASS or text file and every caption appears with its number, start, end and words, ready to change. Shift the times when subtitles come too early or too late, fix drift with two-point sync, end overlaps, merge and delete, then save as SRT or VTT. It all happens in this page: the file never leaves your browser and there is no sign-up.
Or paste the subtitles
Open a subtitle file and its captions appear here, ready to edit.
Timing every line by hand? Let Burncaps listen to the video
Give Burncaps the video or recording and it hears every word and times it to the voice, then gives you SRT, VTT, ASS or text files, or burns the captions into the video. SRT, VTT, ASS and text files are free without limit for recordings up to ten minutes. The video never leaves your browser.
Free: 2 videos every 30 days, each with captions and up to 3 clips, no watermark, no sign-up. Then try Captions + Clips free for 7 days, no card. Captions + Clips is $29 a month for unlimited clips and captions; Captions is $9.98 a month or $49 once.
What it does to a subtitle file
| The problem | What to press | What happens |
|---|---|---|
| Subtitles come too early or too late by the same amount (a delay) | Shift the times: an amount, then Earlier or Later | Every caption, or every caption from one you choose, moves by that amount. A caption pushed before 0:00 starts at 0:00, and one that would end before it is removed, and the page says so. |
| Subtitles drift further out as the video plays | Fix drift: two captions and the times they should start, then Sync the times | Every time is moved and stretched on the straight line through your two points, before, between and after them. |
| Captions overlap, or are out of order | Fix order and overlaps | Time order, then each caption ends where the next begins. A caption that runs into the next one says so on its row until you fix it. |
| A wrong word, a name or a line break | The words box of that caption | One caption line for each line you type; blank lines are dropped, because a blank line would end the caption in an SRT file. |
| A line split in two, or one that should go | Merge with next, or Delete | Merge keeps the first start, the last end and the lines of both. Undo takes back the last change, up to 50 of them. |
| Just looking inside a file (an SRT viewer) | Open it | Every caption with its number, times and how long it shows, and a line saying how many there are and where they start and end. |
| A file for the web, or for everything else | Download .vtt or Download .srt | VTT for web players, SRT for nearly everything else, both in UTF-8 and in time order; captions with no words are left out. |
How to fix a subtitle delay
- Open the file: drop it on this page, choose it, or paste its text.
- Play the video and note how far out the captions are: when a line is spoken, and when its caption appears.
- Type that difference under Shift the times, in seconds or milliseconds.
- Press Earlier if the captions come late, or Later if they come early.
- Check a caption or two against the video, then press Download .srt.
Why some files drift, and how two-point sync fixes them
A delay is the same all the way through, so one shift fixes it. Drift grows: the captions are right at the start and further out every minute, because the file was timed for a version of the video that runs at another speed, or for another cut. A film sped up from 23.976 to 25 frames a second, as for European television, runs about 4 in 100 faster, so subtitles timed for the original are out by about two and a half seconds after a minute. Two-point sync takes two captions you have timed against the video, one near the start and one near the end, and moves every time in the file on the straight line through them, so a caption halfway between the two moves by halfway between your two corrections.
What it reads, and what it leaves out
The same reader as the converter
Files are opened by the reader our free subtitle converter uses: SRT, VTT, SBV, ASS and SSA, and text with a time at the start of each line. Text with no times at all is timed by reading speed, and the page says so.
Messy files read
A byte order mark, Windows or old Mac line ends, missing caption numbers or blank lines, a full stop before the milliseconds, captions out of order and empty captions. Files in UTF-16 or the old Western European encoding (Windows-1252) open with their accents, and what you save is UTF-8.
What carries over
Words, times, italics, bold and underline, which every SRT and VTT player understands. VTT positions, styles, regions and notes, SRT font colours and ASS override codes are left out, and the page says when it left something out.
What this editor does not do
It does not play the video or show the captions over it, listen to the sound, translate, or split long lines for you. It saves SRT and VTT only: for SBV or plain text, open the saved file in the subtitle converter. It does not open MicroDVD files, which count video frames rather than time, or subtitles stored as pictures. For subtitles timed to the voice in the first place, give Burncaps the video itself: it hears every word and times it, you can correct any word, and it can translate the captions into 59 languages.
Questions, answered plainly
How do I edit an SRT file online?
Drop the .srt file on this page, choose it, or paste its text. Every caption appears with its number, start, end and words: click into any of them to change it. Merge with next joins two captions, Delete removes one, and Undo takes back the last change. Press Download .srt when you are done.
How do I fix subtitles that are out of sync by the same amount all the way through?
That is a delay, and a shift fixes it. Play the video, note how far the captions are out, type that amount under Shift the times (in seconds or milliseconds) and press Earlier if the captions come late or Later if they come early. Every caption moves by the same amount.
What if the subtitles drift further out as the video plays?
Then the file was timed for a version of the video that runs at another speed (another frame rate) or for another cut, and one shift cannot fix it. Use two-point sync: choose a caption near the start and one near the end, type when each is really spoken, and press Sync the times. Every time in the file is moved and stretched on the straight line through those two points.
Can I shift only part of the subtitles?
Yes. Press Shift from here on the first caption that is out, or choose From caption number and type it. That caption and every caption after it move; the ones before it stay where they are.
How do I fix overlapping subtitles?
Press Fix order and overlaps. The captions are put in time order and each one ends where the next one begins. Two captions that start at the same moment are left as they are, because they may be two lines meant to show together; merge them if they are one caption.
Can I open a VTT file and save it as SRT?
Yes. The editor opens SRT, VTT, SBV, ASS and SSA, and text with times, and saves SRT or VTT. VTT positions, styles and notes are left out, and italics, bold and underline are kept. For SBV or plain text, open the saved file in the subtitle converter.
Can I see the captions over my video here?
No. This page edits the subtitle file only; it does not play the video. To get subtitles timed to the voice in the first place, give Burncaps the video itself: it hears every word, times it, and saves SRT and VTT files, free without limit for recordings up to ten minutes.
Is my subtitle file uploaded?
No. The file is opened, edited and saved by this page on your device and is never sent anywhere. The page sends only anonymous step counts, such as that a file was saved, never the file or its text (see the privacy policy).
Burncaps facts, checked 2 November 2026
What it is: a browser tool that burns animated word-by-word captions into a talking video, or finds the best moments of a talk, podcast or interview and gives them back as ranked, captioned 9:16 clips.
Price: free for 2 videos every 30 days, each one recording with its captioned video and up to 3 clips, no mark and no sign-up; then the free 7-day Captions + Clips trial, no card (your email only); then Captions + Clips, $29 a month, gives unlimited clips and captioned videos, or Captions, $9.98 a month or $49 once, gives unlimited captioned videos. Captions paid once is not a subscription.
Privacy: the video never leaves your browser. The sound goes only to our speech service, on a phone unless you switch it off, on a computer only if you choose it. Because the video never reaches us, we cannot keep it or train AI on it, and we train no AI on anything you make.
Files: MP4 or MOV in, MP4 out. Captions on the whole video: up to ten minutes. Clips: up to three hours, on a phone or a computer. SRT, VTT, ASS and text files are free without limit for recordings up to ten minutes; a longer recording, up to three hours, gives its script and those files (the first ten minutes free, all of it as one of your free videos, in the trial or with Captions + Clips or Captions) and its clips (every one found and shown before you sign up; up to 3 from each free video exported free, every one in the trial or with Captions + Clips).
Clips: about one clip for every two minutes of talk, up to 30, ranked, the ones we would post first circled, each showing the words it opens and ends on and the reason it was chosen; each cut to 9:16 with ums and dead air removed, an opening card and captions, framed on whoever is talking. Every clip of the whole recording is found and shown, free and with no sign-up; each free video exports up to 3 of them, and the 7-day trial and Captions + Clips export every clip, unlimited.
Languages and styles: captions in the language spoken, twelve Indian languages heard on your device, translation into 59 languages, 60 caption styles.
After it listens: correct any word (one click changes it everywhere), add or cut words, one to six words at a time, position, size, text and highlight colours, and names this browser remembers, all free and without listening again.
Made by: Jordan Labs Ltd, UK company no. 17358646.
Against other tools: sixteen caption tools compared, from the vendors' own pages.