Free subtitle tools
Free subtitle tools for the files you already have: convert between SRT, VTT, ASS and TXT, check a subtitle file for errors, or shift its timing. Each subtitle tool runs in your browser, so nothing is uploaded.
SRT to VTT
Convert SRT subtitles to WebVTT for HTML5 video and web players.
VTT to SRT
Convert WebVTT captions to SRT for YouTube, Premiere Pro, DaVinci Resolve and desktop players.
SRT to TXT
Strip numbers and timestamps from an SRT file and get clean text — for show notes, blog posts, or reading.
ASS to SRT
Convert Advanced SubStation Alpha (.ass/.ssa) subtitles to SRT.
Subtitle time shift
Subtitles too early or too late? Move every caption in an SRT, VTT, ASS or SBV file by any number of seconds.
Subtitle checker
Find overlaps, timing errors and long lines, and download a repaired file.
Need a subtitle file made from a video?
The auto subtitle generator listens to your video and writes word-timed captions you can edit and export.
Which subtitle tool do you need?
| Task | Subtitle tool |
|---|---|
| Captions for an HTML5 video or web player | SRT to VTT converter |
| Subtitles for YouTube, an editor or a desktop player | VTT to SRT converter |
| Anime or styled subtitles for a platform that only reads SRT | ASS to SRT converter |
| The words only, as a transcript | SRT to TXT converter |
| Subtitles that appear too early or too late | Subtitle time shift |
| A platform rejects the file, or captions overlap | Subtitle checker |
Subtitle file formats in one minute
- SRT (.srt) — numbered captions with a time range; read by almost every player, editor and platform.
- WebVTT (.vtt) — the web’s caption format, required by HTML5 video.
- ASS / SSA (.ass) — styled subtitles with fonts, colours and positions.
- SBV (.sbv) — YouTube’s own download format.
- TXT — the words without timing.
Every subtitle converter here recognises the format you drop in, so a VTT file dropped on an SRT tool still converts.
Subtitle tools FAQ
Are the subtitle tools free?+
Every subtitle tool on this page is free to use, with no account and no limit on the number of files.
Are subtitle files uploaded to a server?+
Each subtitle tool runs in your browser, so the subtitle file is read on your device and is not uploaded.
Which subtitle formats do the tools support?+
The subtitle tools read SRT, WebVTT, ASS/SSA and SBV files and write SRT, WebVTT, ASS, SBV and plain text.
How large can a subtitle file be?+
Subtitle files up to 10 MB are supported, which is far more than a feature-length film needs.
How do I make a subtitle file from a video?+
A subtitle file is made from a video with the subtitle generator: it transcribes the speech, times every line, and exports SRT, VTT, ASS or TXT.