LocalizedBook

Patchouli books store a book's name, landing text and subtitle as fixed strings in book.json, and LocalizedBook replaces those strings through a configuration file. Each book is set up with its mod ID and book ID, followed by a custom name, landing text or subtitle, and any field left at its default keeps the original text. The settings live in the mainconfig.toml file under the config folder for localizedbook, and they are written in TOML format.

Changes take effect in the game after Minecraft is restarted, so a translator can edit the file, relaunch and check the result. The Botania Lexicon is a worked example: an entry for botania:lexicon can set its own guide name, welcome text and subtitle, with the untouched fields reverting to the stock Botania wording. The mod is client-side only, so it is installed in the mods folder of a single-player or multiplayer client and does not need to run on the server.

The mod requires Patchouli, which must be installed next to it on either Fabric or Forge, along with Fabric API on Fabric builds. Files are published for Fabric and Forge, both for 1.20.1, and the latest files date from 2024-10-25. The source code is public under the MIT License, so the mod is open source.