Subwave

Free · No account · Nothing uploaded

Edit subtitles over the video

Fix the words and the timing while they play over the picture. Sync drifting subtitles, check reading speed, save a clean SRT. Your video never leaves your device.

Open Subwave Read the guides

Works in a recent Chrome or Edge, on a computer or an Android phone.

Subwave holiday.en.srt412 lines · UTF-8 Save
0:000:020:040:060:080:100:120:140:160:18Where were you last…Out. Walking.In the rain? You're soak…I needed air.Come in, sit down.

See every line where it plays

Films, interviews, lectures, videos for social media: subtitles that read well and land on the right frames.

Live over the picture

Type, and the subtitle changes on the video at once: italics, colours and lines at the top too.

Timing on the waveform

Drag lines over the sound, snap them to frames, or hold a key while each line is spoken.

Fix sync in a minute

Subtitles late, or drifting? Shift them, or give two lines their right times and the rest follow.

Reading rules

Lines too fast to read, too long, too close: marked as you work, fixed in one click.

Any file, any language

Old encodings, broken numbering, missing lines: read and repaired. Arabic, Hebrew, Chinese and emoji drawn right.

Private, and never lost

No upload, no account. Every change is kept in your browser, so a closed tab loses nothing.

How it works

  1. Open the video and its subtitles

    Drop both on the page. No subtitles yet? Open just the video and start new ones.

  2. Fix the words and times

    Click a line to see it on the video, type to change it, drag it on the timeline.

  3. Save

    Back into the same file, or as a new one. A clean SRT that every player reads.

Guides

Short walk-throughs for the subtitle jobs people do most.

Change the frame rate25 fps subtitles on a 23.976 fps video, and back.Edit SRT subtitlesFix the words, see them over the video as you type.Fix strange charactersé instead of é? Read the file right, save UTF-8.Fix subtitles out of syncToo early, too late, or drifting: fixed in a minute.Make subtitles for a videoTime each line by holding a key, then type it.

Questions

Is Subwave free?

Yes. Subwave is free to use, with no account and no sign-up.

Are my video and subtitles uploaded?

No. Subwave runs entirely in your browser. It reads your video and subtitle files where they are on your device and saves the subtitles back to your device. Nothing is sent to a server.

Which subtitle formats does it open?

SRT, the most common subtitle format, in any text encoding. WebVTT and adding subtitles to the video itself are coming next.

Which browsers does it work in?

A recent Chrome or Edge on a computer or Android phone. Chrome and Edge also save straight back into the file you opened; other browsers save by downloading.

Subtitles to fix?

Open Subwave and drop your video and its .srt file in.

Open Subwave