Show HN: YouTube to MP3 Converter – Free in the Browser
A developer created a free Chrome extension that downloads and converts YouTube videos to MP3 locally in the browser, avoiding ads, popups, and server-side processing. The extension supports batch downloads from playlists and a video queue feature for later downloads.
Background
- "Show HN" means the creator is presenting a side project on Hacker News, tech's most influential community.
- YouTube-to-MP3 tools operate in a legal grey area: YouTube's ToS forbid downloading audio, and the record industry has repeatedly sued such services. Running everything locally (in-browser, no server) is a deliberate choice to avoid hosting infringing content.
- Google has removed similar Chrome extensions for policy violations. This extension processes audio entirely on the user's machine using WebAssembly — no data leaves, no server costs, and no central target for takedowns.
- Batch playlist download is the standout feature: most browser converters handle one video at a time; queuing an entire playlist is technically harder due to YouTube's rate limits.
- "Sketchy" online converters often bundle malware or inject ads. A local extension avoids those risks — though users must still trust the extension's own code.