I built this because most online translation editors (XLIFF, JSON, ...) for translating strings are either terrible or are locked behind a paywall. And if you want auto-translation, you're either paying for an expensive subscription or having to wire up some flow-based toolchain, with restrictions around every corner unless you're on the "Premium" package — when all I really want is: upload a file, click translate, download the result.

Wordzilla lets you upload your existing translation files, see all your strings in one place across languages, and auto-translate missing entries using OpenAI.

Supports JSON, XLIFF 1.2/2.0, CSV, and Excel. You can export back to the same format you uploaded.

The editor is completely free, you can give it a try. New accounts also get 100 free credits to test the auto-translation (costs roughly 0.015 credits per character, so a typical small app runs a few dollars).

Any feedback is greatly appreciated.