Kissma LLC

Extract subtitles & transcripts (VTT/SRT) from streaming video: YouTube, Wistia, Teachable, Kaltura / Canvas courses, HLS players.

Get the full transcript out of almost any video you watch — then copy it or download it as a clean text file, with or without timestamps. Whether you're a student compiling notes from lectures and online courses, a researcher pulling quotes out of recorded talks, or a creator gathering reference material, this tool takes the hassle out of hunting down hidden subtitle files. Great for studying, summarizing a long talk, searching what was said, or pasting a transcript straight into an AI assistant. WORKS WITH: ✅ YouTube — auto-generated and manual captions, in any language ✅ Kaltura — the video system behind many university lecture portals ✅ Wistia — including the native player used by several course platforms ✅ Vimeo ✅ Loom ✅ Any site that serves standard VTT or SRT subtitles, including HTML5 <track> tags and HLS streams Tested platforms, in full: https://kissma.org/apps/vtt-transcript-extractor#supported-sites KEY FEATURES: 🚀 One-click or automatic — captures captions as the video plays, or pulls them from your current tab in a single click ⏱️ Timestamps optional — export plain text, or keep the timecodes 📂 Live preview — read the transcript right in the popup before you export 🔒 Private by design — everything runs locally in your browser; your transcripts are never uploaded, tracked, or stored on our servers 🌐 Lightweight — built natively so your browser stays fast A quick note on expectations: subtitles have to exist and be available for a video, and a few platforms deliver them in a format we can't read yet. Run into a site that doesn't work? The popup has a one-click "report this site" link — tell us and we'll add support.