Static and dynamic content is translated before it reaches the browser
Each language's URLs are real: /ru/, /fr/, /de/
When the source content is updated, translations are updated automatically
SEO works from day one
Real Limitations: Not all translation proxies translate dynamic content. Those based on JavaScript insert translations in the browser, which means SEO suffers and forms remain untranslated. Only server-side translation proxies avoid these problems.
In an online store, the catalog, prices, purchase buttons, and confirmation pages must be translated. A purchase process that is half in another language will not convert. And a catalog that Google does not index will not attract organic traffic.
Direct Comparison
Translation API
Proxy (JS)
Proxy (Server)
Implementation
Requires Development
No Code
No Code
SEO
Limited
Limited
Good
Dynamic Content
❌
❌
✅
Forms
❌
❌
✅
Auto-update
❌
✅
✅
So, what to choose?
Direct API makes sense when there is a technical team, time for integration, and specific requirements: complex web applications, translation of user-generated content, document translation pipelines.
JavaScript Proxy 易于安装，但它与客户端 API 一样存在 SEO 和动态内容问题。仅适用于非常简单的静态网站。
服务器端代理 是现有网站的自然选择，这些网站需要添加语言而无需更改代码，从第一天起就具有有效的 SEO 并支持动态内容。