Everyone talks about translation costs in the abstract. Let's use real numbers.
Take a concrete scenario: a documentation site with 200 pages, translated into 5 languages (Spanish, French, German, Japanese, Chinese). This is roughly the size and scope of projects like Prettier or Jest — both of which we've translated as live demos.
Translating a marketing page is straightforward. Translating technical documentation is not. The failure modes are specific, predictable, and damaging when they occur.
Here are the five most common ways technical doc translation goes wrong — and what correct output looks like. Every "correct" example below links to a live translated site you can verify yourself.
Jest is the most widely used JavaScript testing framework, with over 100 million monthly npm downloads. Its documentation includes getting-started guides, configuration reference, a full API reference for matchers and mocks, and framework-specific guides for React, TypeScript, webpack, and more.
We translated the entire Jest documentation site into 7 languages: German, Spanish, French, Italian, Japanese, Portuguese (Brazilian), and Chinese (Simplified).
Not every project needs multilingual documentation. Here's how to tell whether yours does — and whether now is the right time.
Prettier is one of the most widely used code formatters in the JavaScript ecosystem, with over 48,000 GitHub stars. Its documentation covers installation, configuration, editor integration, language support, and API reference — a mix of prose, code samples, and configuration examples that makes translation non-trivial.
We translated the entire Prettier documentation site into 7 languages: German, Spanish, French, Japanese, Korean, Swedish, and Chinese (Simplified).
We've been translating open source documentation to prove that high-quality, automated doc translation is real — not a pitch deck bullet point. Below are 19 live sites you can browse right now.
Every project was translated from its public GitHub repository. Code blocks, JSX components, and links are preserved. Each site is deployed on Vercel and syncs with the source repo.
These are independent demos, not official partnerships. If you maintain one of these projects and want to make it official, get in touch.