Edit subtitles online
A free online subtitle editor for SRT and VTT files. Fix the words and timings, check them against your video, and download the file. It runs in your browser, so your files never leave your device.
Open a subtitle file
Drop an .srt, .vtt or .sbv file here, or choose one from your device.
Your files never leave your device. Editing happens in your browser.
How to edit an SRT file online
To edit an SRT or VTT file online, open it in the editor above. Each subtitle gets its own row with its start time, end time and text. Change any of them, add or delete subtitles, and add your video if you want to watch the subtitles play over it. Then click Download to save an SRT, VTT, TXT or SBV file. It is free, needs no signup, and your files never leave your device.
How it works
- Step 1
Open your file
Drop an .srt, .vtt or .sbv file onto the editor, or start a new file from scratch.
- Step 2
Fix words and timings
Click any subtitle to change its text, start or end time. Add, delete or find and replace across the file.
- Step 3
Check it on your video
Add your video to watch the subtitles play over it, and set a start or end time from the video.
- Step 4
Download it
Save as SRT, VTT, TXT or SBV, with the same file name.
What you can do in the editor
- Change the text, start time and end time of every subtitle, one row each. Times can be typed as 00:01:02,500, 1:02.5 or 62.5.
- Add a subtitle after any line, or at the current point in your video. Delete one by mistake? Undo brings it back.
- Play your video next to the list, with the current subtitle shown on top, so you can see when each line appears.
- Find and replace a word across the whole file, such as a name the transcript spelled wrong.
- Move every subtitle earlier or later by a few seconds when the whole file is out of sync.
- See subtitles that overlap or end before they start, and sort them back into time order.
- Save as SRT, VTT, TXT or SBV. Bold, italic and underline are kept in SRT and VTT.
SRT vs VTT
| Detail | SRT | VTT |
|---|---|---|
| Full name | SubRip Subtitle | WebVTT (Web Video Text Tracks) |
| First line | A cue number (1) | WEBVTT |
| Timing | 00:00:01,000 --> 00:00:03,000 | 00:00:01.000 --> 00:00:03.000 |
| Styling | Bold, italic and underline | Bold, italic, underline, CSS classes, position and alignment |
| Use it for | Video editors, YouTube, Facebook, LinkedIn and most media players | Web video players (HTML5), Vimeo, YouTube and online course platforms |
Want the subtitles on the video itself?
Upload your video and AutoSubtitles writes the subtitles from the speech, then burns them in with styled, animated captions. Free to start, with no account.
Frequently asked questions
- How do I edit an SRT file?
Open it in the editor at the top of this page. Each subtitle has its own row: change the text, the start time or the end time, then click Download .srt. An SRT is also plain text, so you can open it in Notepad or TextEdit, but the editor keeps the numbering and timing format correct for you.
- Is this subtitle editor free?
Yes. It is free with no signup, no watermark and no limit on how many files you edit.
- Are my subtitle file and video uploaded?
No. Your browser opens the subtitle file and plays the video on your device. Nothing is sent to a server, so it works for private or unreleased work too.
- How do I fix subtitles that are out of sync?
If every subtitle is off by the same amount, use Move every subtitle in the editor, or the free subtitle shifter, and enter the gap in seconds. If they drift further out as the video goes on, the file was made for a different frame rate; the subtitle shifter has a frame rate fix for that.
- Can I edit a VTT file?
Yes. Open a .vtt file the same way and save it as VTT again, or as SRT. Text, timings, bold, italic and underline are kept. VTT position and alignment settings are removed, so every subtitle shows in the player’s default position.
- Can I create a subtitle file from scratch?
Yes. Click Start a new file, add your video, then play it and use Add subtitle here at each line. Typing every line by hand is slow for long videos, so it’s often faster to let AutoSubtitles write them from the speech.
- Does it work on a phone?
Yes, it works in any modern browser. Editing many subtitles is easier on a computer, where the video and the list sit side by side.
- Can I add sound descriptions for SDH subtitles?
Yes. Click Add subtitle after a line, or at the point in your video where the sound happens, and type it in square brackets, such as [door slams] or [phone buzzing]. Add a speaker label like [man] or [Maya] at the start of a line when viewers can’t see who is talking. Subtitles with these are called SDH, subtitles for the deaf and hard of hearing.
- I don't have a subtitle file yet. Can you make one?
Yes. Upload your video to AutoSubtitles and it writes the subtitles for you from the speech, with timings. You can fix any word, then burn styled captions into the video for free, or download SRT, VTT and TXT files with Pro ($9/month).
More free tools
- Subtitle shifterMove every subtitle earlier or later, or fix a frame rate mismatch.
- Add text to a GIFPut a caption or meme text on an animated GIF, in 28 caption styles.
- Subtitle converterConvert between SRT, VTT, SBV and TXT in one click.
- VTT to SRTTurn a WebVTT file into an SRT for editors and social platforms.
- SRT to VTTTurn an SRT into a WebVTT file for web players and course platforms.
- SRT to TXTTurn an SRT into a clean transcript with no numbers or timings.
- VTT to TXTTurn a VTT file or a Zoom or Teams transcript into plain text.