What is notion-zh_cn?

notion-zh_CN is a Chinese localization project for Notion, the popular note-taking and productivity app. At the time this project was created, Notion had Chinese locale data already embedded in its app files (derived from a Korean localization) but had not made it accessible to users. This project provides scripts and patches that unlock and apply that Chinese text so the interface appears in simplified Chinese. The project supports several platforms. For the web browser, it works as a Tampermonkey or Greasemonkey userscript that you install in your browser. For Windows and Mac desktop apps, it provides either pre-patched replacement files you can drop into the Notion installation folder, or instructions for manually editing the app files to redirect the language setting to Chinese. There is also a modified Android APK that includes the Chinese interface baked in. A third method, using a Cloudflare Worker as a proxy to serve the Notion interface through a custom domain with the locale forced to Chinese, is documented but actively discouraged in the README. The author warns that using this method risks having your Notion account flagged or banned, and recommends avoiding it unless you fully understand what the code is doing. The translation itself started as machine translation and has gradually been improved by community contributors. Anyone who notices awkward or incorrect phrasing can submit a pull request to edit a single JSON file that holds all the translated strings. The README includes a disclaimer that the project is for personal learning and study only, and that the author will remove it immediately if notified of any infringement. As of the latest README update, Windows and Mac versions are at version 3.1.0. The project notes it has not been actively maintained for some time, and encourages users to update to the current pre-patched release rather than following manual steps.