About Subtitle Desk

Last updated 2026-10-13

Subtitle Desk is a free set of browser tools for video editors, captioners, subtitle translators and anyone who has to deliver a video with the right subtitle file. Each page does one job — convert SRT, WebVTT, SBV, ASS or TTML subtitles, fix their timing, edit or check a file, pull subtitles out of an MKV or MP4, or work out a bitrate or file size — and works straight away: there is no account and nothing to install.

Every tool gives you a file you own: copy it or download it. Where it makes sense, the page address keeps your settings, so a link reopens the tool the same way.

How it works

• Everything runs in your browser. Subtitle files and videos you open stay on your device; nothing is uploaded.
• Results are computed, not typed in. The examples on each page are produced by the same code the tool runs, and that code has automated tests with known answers.
• Sources are named. Formats follow their published descriptions — the W3C WebVTT and TTML specifications, the Matroska and MP4 container specifications — and recommended limits and bitrates are quoted from the guidelines that publish them, with the date we checked them.
• Third-party material used on the site is listed on the credits page.

If a tool gives a wrong result, please tell us through the contact page.

Who runs it

Subtitle Desk is owned and operated by SKYSEED TECH LLC. You can write to us at support@ind1688.com.

Advertising

The site is free to use. We may show advertising in future to pay for hosting and development. If we do, ads will be labelled “Advertisement”, will never cover a tool, and are described in the privacy policy.