Subtitle Toolbox

Convert, resync, clean and transcript-ify SRT / VTT subtitle files — the tedious parts, done in seconds.

✓ 100% in your browser. Nothing is uploaded anywhere. Works offline once loaded.

Input

Drop an .srt / .vtt / .txt file here, or click to choose — or just paste below

Output

Actions

Convert
Resync (shift every timestamp)
Subs appear too early → shift later. Too late → shift earlier.
Clean
Find & replace (all cues)

Guides

Convert SRT to VTT · Convert VTT to SRT · Fix out-of-sync subtitles · Remove [sounds] & speaker names (SDH)

FAQ

Is my file uploaded to a server?

No. This page has no backend and makes no network requests with your data. Everything runs in your browser's memory.

What formats are supported?

SRT and VTT in, plus SRT / VTT / plain-text transcript out. Malformed files are parsed leniently — the tool recovers what it can.

My subtitles are out of sync with the video. Which shift do I use?

If the text shows up before people speak, shift later (+). If it lags behind, shift earlier (−). Typical fixes are 500–3000 ms.