Does DeepL API support brand glossaries?

Yes, DeepL API Pro supports custom glossaries (term pairs you define). This ensures your brand name, product names and key terms are never mistranslated. Glossaries are uploaded once and reused across all requests.

Can DeepL API integrate directly with Shopify?

Not natively. You need either a custom integration (developer work), a translation app from the Shopify App Store, or a catalog editing tool like Seegea that wraps the DeepL API with a review workflow and CMS push.

Should I use DeepL or Claude/GPT-4o for product catalog translation?

DeepL is better for pure fluency on European language pairs at lower cost. Claude Sonnet and GPT-4o are better for brand-tone control and marketing copy. Seegea lets you choose per translation job.

DeepL API for product listings: integration, cost and limits

DeepL API is the go-to machine translation engine for European language pairs in 2026 — significantly more fluent than Google Translate on German, French, Spanish and Dutch product copy. The challenge: integrating it into a Shopify or PrestaShop catalog without building a custom pipeline.

DeepL API for product catalogs: what to know

Glossary support

DeepL API Pro supports custom glossaries with term pairs you define. Upload once: your brand name, product names, material names, forbidden equivalents. Every translation reuses the glossary automatically.

Predictable cost

DeepL API charges per character at a fixed rate. Budget is predictable: a 2,000-product catalog (average 500 words per listing) in 3 languages costs approximately $120 to $240 in DeepL credits.

EU-based, GDPR-compliant

DeepL is a German company with EU data processing. For merchants with GDPR requirements, this is a meaningful compliance advantage over US-based translation APIs.

International stack

Criterion	DeepL API	Claude Sonnet / GPT-4o
Cost per 1M characters	~€20	~€60 to €120
Brand-tone control	Limited (glossary only)	Full (system prompt)
Marketing copy quality	Good	Excellent
Technical attributes	Excellent	Excellent
Asian language quality	Good	Very good
GDPR compliance	EU-based	US-based (with DPA)

Best practice: use DeepL API for descriptions and attribute-heavy content (lower cost, high fluency), and Claude Sonnet for meta titles and meta descriptions (brand-tone critical, short content, small token budget).

Seegea + DeepL: the review workflow

Seegea wraps DeepL API with the missing layer: a human review grid. Translations appear in the tabular interface side by side with the original. You validate, correct or regenerate inline before any push to Shopify or PrestaShop. Full rollback if needed.

Created in France between Annecy and Chantilly, Seegea supports Shopify and PrestaShop merchants in their international catalog expansion.

Translate your catalog with DeepL + review

30-min Google Meet · live translation workflow on your products

Translate your catalog with DeepL + review

Created in France (Annecy – Chantilly) · Email & Google Meet support

FAQ

DeepL API Pro charges per character translated. In 2026, the rate is approximately €20 per million characters for the Pro plan. A typical 2,000-product catalog with descriptions averages 2 to 4 million characters per language — so $40 to $80 per language.