Are my files uploaded?

No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.

Is it free? Are there limits or watermarks?

Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.

Does it work offline?

Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.

Home / Subtitles / Split & Join Subtitles

Split & Join Subtitles

Split a subtitle file at set times or into equal parts, or join several files into one.

Free, no uploads, no sign-up. Runs 100% in your browser.

How Split & Join Subtitles works

Split cuts the list of lines at the times you give and can move each part back to start at zero. Join places each file at a start time you type, or right after the previous file, and writes one file.

Input: SRT, VTT, ASS, SBV. Output: SRT, VTT, ASS, ZIP.

How to use Split & Join Subtitles

Pick Split or Join.
Drop your file or files.
Set cut times, parts or start times.
Download the result.

Tips

Nothing is uploaded. Your files stay in this browser tab.

Split & Join Subtitles FAQ

Are my files uploaded?: No. This tool runs entirely in your browser tab. Files are read from your disk into memory and the result is generated locally.
Is it free? Are there limits or watermarks?: Free and open source (MIT). There are no file-size caps, daily quotas, accounts or watermarks.
Does it work offline?: Yes, once the page (and any engine it needs) has loaded, it keeps working without a connection thanks to the service worker cache.

Related tools

Subtitle Shift and Sync: Fix out-of-sync subtitles: shift all lines, correct frame rate drift, or line up two points.
Subtitle Converter: Convert between SRT, VTT, ASS, SSA, SBV, SUB, LRC, SAMI, TTML, JSON and CSV in bulk.
Merge Videos: Join multiple clips into one video.
Subtitle Editor: Create and edit subtitles against a video preview. Set times from the player, split lines, save SRT, VTT or ASS.