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Mod LabsEarly Access

A production workbench for HOI4 localization.

Mod Labs helps Hearts of Iron IV mod creators turn tedious localization files into a cleaner, safer workflow: compare languages side by side, catch issues early, and export game-ready files without breaking the mod.

Early access

Try Mod Labs during preview

Join the list for an upcoming batch of free access, or follow development on Discord.

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Import without dismantling your mod

Mod Labs preserves your project's localization paths and structure.

Work side by side

Compare source and target text side by side, inspect missing keys, and clean formatting issues before they reach the mod.

Export in the game's format

Download files ready to return to your mod, with the paths and structure Hearts of Iron IV expects.