Speed checker
CPS, line length, line count, overlaps.
OpenRead the cue before you burn it in.
Check characters per second, preview a 9:16 frame, and export an SRT. The file stays on this device.
9:16 preview
A phone frame, a local video, and the caption.
OpenFix timing
Close overlaps and download the file.
OpenOn this device
The calculation stays in this browser. The worked example on the guide is written in HTML so the inputs and the result can be read without running the script.