As a side project, I've been building Lazyblink — a collection of free browser-based tools — and I recently added a set of subtitle utilities that solve a problem I kept running into: most online subtitle tools either upload your file to a server, slap on a watermark, or hide the useful part behind a signup.
So I built these to run 100% in the browser using JavaScript. The subtitle file never leaves your device, which matters when you're working with unreleased or client video.
What it does:
SRT ↔ VTT conversion — convert between the two most common subtitle formats
Transcript extraction — pull clean plain text out of an SRT/VTT file, stripping timestamps and cue numbers (useful for show notes, blog posts, or accessibility)
