Skip to content

legendarr

**Self-hosted subtitle translation companion for Radarr and Sonarr**

What is legendarr?

legendarr is a self-hosted companion for Radarr and Sonarr that automatically translates subtitles for your movies and TV shows. It runs as a single Docker image combining a background sync scheduler, a translation pipeline, and a web dashboard — with one SQLite database and no external services required.

Unlike tools that only handle external .srt files, legendarr is built to discover and translate any subtitle track, including ones embedded inside the video container.

legendarr dashboard

Feature Highlights

  • Named profiles pairing source and target languages (e.g. ja → pt-BR, en)
  • Per-profile translation provider selection
  • Per-profile control over extracting embedded subtitle tracks
  • Periodic sync against the Radarr and Sonarr APIs
  • Runs on a configurable interval via a background scheduler
  • Single SQLite database shared by the sync job and the web UI
  • Finds external sibling subtitle files (.srt, .ass, .ssa, .vtt)
  • Embedded track probing via the video container, wired in as the feature matures
  • Pluggable TranslationProvider contract — bring your own backend (DeepL, Google, LibreTranslate, ...)
  • Ships with an echo provider for local development and testing

Getting Started