How to edit subtitles
- Drop your subtitle file on the box above, or use Import SRT or VTT under it. SBV files from YouTube work too.
- Choose "Edit without video" to work on the file alone. Or drop the matching video as well, to hear every line as you check it.
- Click a line to change its words. Change the start and end times shown under a line to adjust its timing, and use the buttons beside them to split, merge or delete it.
- Open Export and save the file as SRT, VTT, SBV or TXT. It keeps your original file name.
Every change can be undone with Ctrl+Z (Cmd+Z on a Mac), so it's safe to try things. The file never uploads, and editing an existing file is free with no limits.
An SRT editor that works without the video
Most quick fixes don't need the video at all: a misspelled name repeated through the file, a line that says "their" instead of "there", a caption that should be deleted. Open the file on its own and the editor shows every line in a searchable list, with a timeline under a text preview. Press play and a clock runs through the captions at real speed, so you can still see when a line flashes by too fast or sits on screen too long.
Use the search box to find every place a word appears, then click each match to fix it. To edit srt file timing precisely, type new start and end values under a line; the change applies when you leave the field, and the timeline moves with it.
Shift subtitles earlier or later
The most common subtitle problem is a file that is off by the same amount all the way through, usually because the video was trimmed at
the start after the subtitles were made. The Shift all control fixes that in one step. Enter the number of seconds and press Apply:
2.5 moves every caption 2.5 seconds later, -1.2 moves every caption 1.2 seconds earlier. Captions pushed before
the start of the video are removed, and one that straddles zero is trimmed to start at zero.
Find the right amount with the video loaded: play to the first spoken line, compare it with when its caption appears, and shift by the difference. If the subtitles start in sync and drift further out over time, a single shift won't fix it. That pattern usually means a frame rate mismatch, and our guide to fixing subtitles that are out of sync walks through the causes.
Edit subtitles with the video
Add the video when the words themselves are in doubt. Clicking a line jumps the video to it, so you can listen again and correct what was said. With the video loaded you also get the full caption editor: pick a style, move the captions, and export an MP4 with the subtitles burned in, rendered on your device. Videos can be up to 30 minutes long, and because the captions already exist, nothing is transcribed and no credits are used.
No subtitle file yet? Start from the SRT generator to make one from the speech in your video, then edit it here or right in the same screen.
What the subtitle editor can and can't do
| Can do | Can't do |
|---|---|
| Open SRT, VTT and SBV files | Open ASS, SSA, SCC or image-based subtitles (SUB/IDX, PGS) |
| Edit text and start and end times | Keep italics, colors or VTT positions |
| Split, merge and delete lines, with undo | Translate subtitles into another language |
| Shift every line earlier or later | Stretch timing to fix a frame rate mismatch |
| Save as SRT, VTT, SBV or TXT | Edit several files at once |
If you only need a different format and no edits, the subtitle converter is quicker, and it keeps line breaks inside a caption.