Online subtitle editor
Open your subtitle file or start from scratch. Add your video alongside, click a line to jump to that moment, and grab timings from the player with one click.
Free · no sign-up · your file is processed in your browser and never sent to a server
How to use
- Open or startAdd an existing subtitle file or start with an empty list. Optionally add a video or audio file for preview.
- EditType the text, fix timings, add or delete lines. Overlapping and invalid timings are highlighted.
- ExportDownload as SRT, VTT, ASS, SBV, TXT or DOCX. Your draft is saved automatically in this browser.
What's in the editor?
- Video and audio preview: the file you add plays only in your browser; the current subtitle is shown over the picture.
- Take times from the player: the "Start = now" and "End = now" buttons set a line's timing to the player position.
- Checks: lines that end before they start, are empty or overlap the previous one are highlighted.
- Undo: the last 50 changes can be undone (Ctrl/Cmd + Z).
- Draft: your work is saved in this browser, so you can close the page and pick up where you left off.
Quick rules for readable subtitles
Keep lines under 42 characters and use no more than two lines per subtitle. Each subtitle should stay on screen for at least a second; 15–20 characters per second is a good upper limit for comfortable reading. The number next to each line shows the character count of its longest line.
Common questions
Is my video uploaded anywhere?
No. The video and subtitles are only opened in your browser; no file is sent.
Will I lose my work?
The subtitles you're editing are saved automatically in this browser's local storage. They won't appear on another device, so download the file when you're done.
Can I write subtitles from scratch?
Yes. Choose "Start empty", add your video and add lines using times taken from the player. For a long recording, it's faster to create an AI draft first with the subtitle generator.
Can I shift all subtitles by a few seconds?
Use the subtitle time shift tool for bulk shifts, then open the file here to fine-tune line by line.
Which formats can I save in?
SRT, WebVTT, ASS, SSA, SBV, TXT, DOCX and CSV.
Related tools
- Subtitle converterConvert between SRT, VTT, ASS, SBV and TXT in your browser.
- Subtitle time shift and syncShift late or early subtitles, or sync them with two points.
- Add subtitles to videoBurn subtitles permanently into your video, in the browser, no upload.
- Subtitle translatorTranslate subtitles into another language while keeping the timing.
- Subtitle generatorCreate SRT and VTT subtitle files from video automatically.
Move to the studio for more.
Long files, saved projects and advanced export are in the studios. Start with a free account.