DeepL for Website Translation: When It Works, When It Doesn't

In this article: where DeepL is truly good for website translation, where its limitations become a problem, and what role DeepL plays in the technical architecture of a multilingual website.
DeepL is one of the best machine translators for European languages. This is a fact acknowledged by most professional translators. But "translating well" and "being the right solution for a website" are different things.

What DeepL Does Well

Translation Quality for European Languages. German, French, Spanish, Polish, Dutch — DeepL consistently wins comparative tests against Google Translate for text naturalness. Especially good with long sentences and complex structures.
API for developers. DeepL provides an API that can be integrated into any system. Free plan limits: 500,000 characters per month, paid — by volume.
Formatting preservation. DeepL can translate HTML while preserving tags — this is important when you need to translate text without losing markup.

Where DeepL won't help

Not all languages are supported. DeepL covers about 30 languages — mostly European. Kazakh, Armenian, Uzbek, Georgian — are not supported. For CIS markets, DeepL is not an option.
It's just an engine — not a solution. DeepL translates text. But for a multilingual website, you also need to: manage language versions, generate hreflang, configure SEO for each version, and translate dynamic content. DeepL itself does none of this.
You cannot embed DeepL directly into a website. You cannot add a DeepL script as a widget — requests from the browser are blocked by CORS with a 403 code, this is an intentional API limitation. Plus, client-side JS translation has the same SEO problems as any JS solution.

The Correct Role of DeepL

DeepL is a translation engine. Its place is inside the system, not on the surface.
Correct architecture: proxy or CMS manages language versions, SEO, and dynamic content. DeepL is used as an API engine for machine translation of text — instead of or in addition to Google Translate.
This provides better translation quality where DeepL is stronger, while all technical infrastructure (hreflang, sitemap, server-side rendering) remains correct.

DeepL vs Google Translate for Websites

Criterion DeepL Google Translate
Quality for European languages
Higher
Worse
Language coverage
~30
130+
CIS languages
No
Partially
API cost
More expensive
Cheaper
Website integration (widget)
Violates ToS
Google provides
For European markets, DeepL as an engine is often justified. For CIS markets — only Google Translate or similar.

Want to use DeepL for your website?

Multify supports DeepL as a translation engine — with the right SEO infrastructure for all language versions.

Frequently Asked Questions

Is DeepL suitable for translating an entire website?
DeepL is a powerful translation engine, especially for European languages, but it is specifically for text translation. It does not create language versions on separate URLs, hreflang, or translate forms. How to cover this part is shown on Multify's main page.
Which languages does DeepL not support?
At the time of writing, DeepL does not support a number of CIS and Asian languages, such as Kazakh, Armenian, and Georgian. Other engines are suitable for these. A guide to CIS languages and locales is available here.
Is DeepL better than Google Translate for websites?
For the quality of translation of European languages, usually yes. In terms of applicability to a website, the difference is small: both are translation engines, not a ready-made solution for a multilingual website.

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