browser extension

Loom for your browser

Dual-language subtitles with per-token romanization and annotation — furigana, Pinyin, Zhuyin, Jyutping, Korean Revised Romanization, and a secondary phonetic line for every supported script — rendered live over YouTube playback. Activate it per tab; nothing runs until you click.

Firefox

Firefox Add-ons

The first supported browser — Loom is built and tested on Firefox.

Coming soon

Chrome

Chrome Web Store

A Manifest V3 build exists; the store listing is in progress.

Coming soon

Edge

Chrome Web Store

Runs the Chrome build directly from the Chrome Web Store.

Coming soon

Store links go live as each browser’s build is published. Loom only sends subtitle text out of your browser, for romanization — see the privacy policy for exactly what is and isn’t transmitted. Prefer working with video files directly? Use the web application.