plx.

The Vision

plx solves a real annoyance: moving a playlist between Spotify, Deezer, and YouTube Music normally means a developer account, OAuth setup, and API keys just to shuffle a few dozen songs. plx skips all that — it reuses your own logged-in browser session (via cookies, auto-fetched or pasted) to read and write playlists directly, then reports match quality per track in a CSV so nothing silently drops. Built as an honest personal tool: it leans on unofficial web endpoints, so it's explicit about being non-commercial and best-effort rather than pretending to be a polished SaaS product.