# Best AI Document Translators in 2026 (Compared)

> Compares Delos Trad, DeepL, Microsoft Word, Reverso Documents, and Google Translate on formatting, privacy, and price to find the right document translator.

_[Wortins Blog](https://www.wortins.com/blog) · Published Friday, August 7, 2026_

**For confidential business documents that need exact formatting preserved, Delos Trad (GDPR-compliant sovereign servers) or DeepL (best European-language quality) are the safest picks. If you already pay for Microsoft 365, Word's built-in translator handles simple documents at no extra cost. For anything non-confidential and informal, Google Translate is free and good enough.** The real dividing line in this category isn't translation quality — it's what happens to your document once you upload it, and how well the layout survives the round trip.

Pricing for the premium tools clusters between €6.49 and €24.99/month, while the free options (Google Translate, Word for 365 subscribers) cost nothing extra but come with tradeoffs in privacy or formatting fidelity.

## The short answer

If your documents are confidential — contracts, HR files, anything with a compliance requirement — **Delos Trad** is the standout: it preserves layout exactly across Word, PDF, and PowerPoint, supports custom business glossaries, and runs on GDPR-compliant sovereign servers. If translation quality for European language pairs matters more than data sovereignty specifically, **DeepL** (€7.49–€24.99/month) is the long-standing quality leader, with custom glossaries and a 20-file/month cap on team plans. If you're already inside Microsoft 365, **Word**'s native Translator handles simple formatting at no additional cost — the easiest option if your needs are basic. **Reverso Documents** (€6.49–€19.99/month) adds collaborative review on top of GDPR-compliant European servers, useful if multiple people need to check a translation together. And for anything informal or non-confidential, **Google Translate** is free and fine.

| Tool | Best for | Pricing | Key strength |
|---|---|---|---|
| Delos Trad | Confidential business documents | Not disclosed in pricing tiers above | Exact layout preservation, custom glossaries, GDPR sovereign servers |
| DeepL | European language quality | €7.49–€24.99/month | Custom glossaries, strong translation quality |
| Microsoft Word | Simple, no extra cost | Included in Microsoft 365 | Native translation, no separate tool needed |
| Reverso Documents | Team collaboration | €6.49–€19.99/month | Collaborative review, GDPR-compliant European servers |
| Google Translate | Free, informal use | Free | No cost, wide language coverage |

## Delos Trad

Delos Trad's core pitch is fidelity and compliance together: it preserves document layout exactly across Word, PDF, and PowerPoint files, supports custom business glossaries so industry-specific terminology translates consistently, and runs on GDPR-compliant sovereign servers — meaning your documents don't leave a jurisdiction with strict data protection guarantees.

**Pros:** exact formatting preservation across the most common business document formats; sovereign server hosting is a real advantage for regulated industries; custom glossaries keep terminology consistent across documents.
**Cons:** more specialized (and likely pricier) positioning than general-purpose tools like DeepL; the compliance focus matters less if you're not handling sensitive data.
**Who it's for:** businesses translating confidential or regulated documents that need both layout accuracy and data sovereignty guarantees.

## DeepL

DeepL has built its reputation on translation quality, particularly for European language pairs, and that reputation carries into its document translation product. At €7.49–€24.99/month, it includes custom glossaries for consistent terminology, though team plans cap out at 20 files a month.

**Pros:** widely regarded as the quality leader for European languages; custom glossary support; formatting preservation on premium tiers.
**Cons:** 20-file/month cap on team plans could be limiting for high-volume users; not specifically built around data sovereignty the way Delos Trad is.
**Who it's for:** anyone prioritizing translation accuracy for European languages over other considerations like compliance or collaboration.

## Microsoft Word

If you're already a Microsoft 365 subscriber, Word's built-in Translator feature costs nothing extra and handles document translation without leaving the app you're already using. It's the simplest option on this list by a wide margin.

**Pros:** no additional cost for existing 365 subscribers; no new tool or workflow to learn.
**Cons:** built for simple document formatting, not the complex layout preservation that Delos Trad or DeepL offer; no custom glossary or sovereignty features.
**Who it's for:** 365 users with straightforward translation needs who don't want to pay for or learn a separate tool.

## Reverso Documents

Reverso Documents (€6.49–€19.99/month) supports Word, PDF, Excel, and HTML, runs on GDPR-compliant European servers, and adds a feature the others don't emphasize: collaborative review, so a team can check and refine a translation together rather than one person working alone.

**Pros:** broadest file format support (including Excel and HTML) of the premium tools; collaborative review is a genuine differentiator for team workflows; GDPR-compliant European hosting.
**Cons:** not positioned as the top choice for pure translation quality the way DeepL is; pricing sits in a similar range to DeepL without a clearly distinct value proposition beyond collaboration.
**Who it's for:** teams that need more than one person reviewing or refining translations before they're finalized.

## Google Translate

Google Translate (and similar tools like Doc Translator) is free and handles a wide range of languages, but it's explicitly best suited to non-confidential, informal translation — quick understanding of a document rather than a polished, formatting-preserved business translation.

**Pros:** completely free; broad language coverage; fastest way to get a rough translation.
**Cons:** not built for formatting preservation on complex business documents; no compliance or data sovereignty guarantees suitable for confidential material.
**Who it's for:** anyone translating something informal or non-sensitive where speed and cost matter more than polish.

## How to choose

The first question is confidentiality. If the document contains anything sensitive — contracts, HR records, financial data — rule out Google Translate immediately and choose between Delos Trad and Reverso Documents, both of which are GDPR-compliant; Delos Trad if exact layout fidelity and custom glossaries matter most, Reverso if you need multiple people reviewing the translation together. If confidentiality isn't a concern but translation quality is, DeepL's reputation for European languages makes it the safer default. And if your needs are genuinely simple — a document or two, formatting that doesn't need to be pixel-perfect — Word's built-in translator (if you're already a 365 user) or Google Translate (if you're not) will save you from paying for a dedicated tool you don't need.

Cost differences across the paid tools are modest (€6.49–€24.99/month), so once confidentiality and quality requirements have narrowed the field to one or two candidates, testing both against a real document is worth doing before committing to a subscription. For related productivity tooling, see our guide to [the best AI email assistants](/blog/best-ai-email-assistants).

Source: [The best AI tools for document translation in 2026: Delos Trad, DeepL, Word, and the alternatives](https://www.delos.so/en/blog/best-ai-tool-for-document-translation-2026)

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## Frequently asked questions

### What is the best AI document translator for business documents?

DeepL is best for European languages with formatting preservation; Delos Trad leads if you need custom glossaries and GDPR compliance; Reverso Documents excels for team collaboration.

### Do AI translators preserve document formatting?

Yes, premium tools (DeepL, Delos Trad, Reverso Documents) preserve layouts on Word, PDF, and PowerPoint files. Free tools (Google Translate) handle simple documents only.

### Which document translator is free?

Google Translate and Doc Translator are free, but best only for informal, non-confidential translations. Premium tools start at €6.49/month.

### Can AI translators handle multiple languages?

All major tools support 50+ languages; DeepL and Delos Trad excel particularly for European languages; Doclingo's multi-engine approach works well for Asian languages.

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