Same English slide translated into Simplified Chinese. Bluente (left of centre) keeps layout, spacing and typography. Google Translate mistranslates the title as "表 / 内容" ("table / content") and runs numbers into the text. DeepL keeps the title but separates the numbered badges from their labels.
Short answer: For format-critical business documents (contracts, financial reports, decks, scanned files), Bluente keeps the layout intact most reliably. DeepL gives very natural text for clean, simple files. Google Translate is the best free option for quick, low-stakes documents. Adobe Acrobat suits teams already working inside Acrobat.
Most "best translation tool" lists judge the words. For professional documents, the bigger risk is that the file comes back broken: tables misaligned, numbering scrambled, headers gone, scanned pages left untranslated. So we tested on the file, not just the sentence.
Quick summary
Best overall for format-critical documents: Bluente
Best for natural-sounding text on simple files: DeepL
Best free option: Google Translate (Documents)
Best if you already live in Acrobat: Adobe Acrobat AI Assistant
Best for scanned PDFs: Bluente (built-in OCR); Google Translate does not translate text inside scanned pages
How we tested
We ran the same set of documents through every tool and compared each output with the original page by page.
Test set: a 26-page Japanese financial filing (tables, statements, risk disclosures), plus an English slide translated into Simplified Chinese. More document types are being added.
What we scored (1–5):
Layout fidelity: fonts, spacing, headers/footers, page breaks
Tables: merged cells, column widths, number alignment
Scanned content / OCR: is text in scanned pages actually translated?
Terminology consistency: same term translated the same way throughout
Security: data retention, training use, certifications
Limits and speed: file size, page caps, turnaround
Head-to-head test: a 26-page Japanese financial filing
We translated Mitsubishi Corporation's FY2025 earnings summary (a public, table-heavy 決算短信 filing) from Japanese to English with each tool and reviewed every page.
Criterion | Weight | Bluente | Google Translate | DeepL | Adobe Acrobat |
|---|---|---|---|---|---|
Layout fidelity | 25 | 24 | 10 | 9 | — |
Table & number integrity | 25 | 24 | 6 | 8 | — |
Translation accuracy | 30 | 27 | 13 | 10 | — |
Terminology consistency | 10 | 9 | 4 | 4 | — |
Clean output (no watermark/artefacts) | 10 | 9 | 3 | 4 | — |
Total | 100 | 93 | 36 | 35 | Could not translate |
Publish-blocking errors | 0 | 7 | 9 | — |
What we found
Bluente: layout, every table and every number intact; company and asset names correct; same 26 pages as the source. One mislabelled profit line and minor cosmetic inconsistencies.
Google Translate: every negative number turned into "ÿ"; page-1 tables collapsed onto single lines; "previous consolidated" translated as "Front coupling"; a share buyback rendered as "acquisition of formula"; watermark on every page.
DeepL: balance-sheet figures shifted a row; tables printed over text; "Global McDonald's" hallucinated in the table of contents; Lawson rendered as "-Son"; the wrong company named as investor in a copper asset; output grew from 26 to 39 pages.
Adobe Acrobat: could not translate the file.
One document and one language pair, so this is an illustrative test, not a benchmark. Scores weight tables and accuracy at 55%, as for any financial filing. [Full test log available on request.]
Comparison table
Tool | Layout | Tables | Scanned PDFs | File formats | Free option | Best for |
|---|---|---|---|---|---|---|
Bluente | 4.8 / 5 | 4.8 / 5 | Built-in OCR | PDF, DOCX, PPTX, XLSX, INDD, images and more | 5 free pages, no card | Legal, finance, regulated teams |
DeepL | 1.8 / 5 | 1.6 / 5 | Quality depends on scan | PDF, DOCX, PPTX, XLSX and more | 1 file/month, up to 5 MB | Clean text-based files |
Google Translate | 2.0 / 5 | 1.2 / 5 | Text in scans is not translated | DOCX, PDF, PPTX, XLSX | Free (10 MB / 300 pages) | Quick, low-stakes files |
Adobe Acrobat | Could not translate | Could not translate | Needs OCR first | Paid (AI Assistant) | Acrobat-centric teams | |
Microsoft Word | Not tested (DOCX only) | Not tested | No | DOCX | Included with Microsoft 365 | Editable Word drafts |
Limits checked against each vendor's help pages in October 2026. Plans change, so confirm before you buy.
Feature comparison
Feature | Bluente | DeepL | Google Translate | Adobe Acrobat | Microsoft Word |
|---|---|---|---|---|---|
File formats | PDF, DOCX, PPTX, XLSX, INDD, images + more | PDF, DOCX, PPTX, XLSX + more | DOCX, PDF, PPTX, XLSX | DOCX | |
Free allowance | 5 pages, no card | 1 file/month | Free | Paid (AI Assistant) | With Microsoft 365 |
Max file size | Up to 100 MB (paid) | 5 MB free; 30–100 MB paid | 10 MB; PDFs ≤300 pages | 100 MB; 600 pages | NA |
Layout engine | Document-first (rebuilds layout) | Text-first | Text-first | In-editor | Text-first |
Scanned PDFs (OCR) | ✅ Built-in | ⚠️ Scan-dependent | ❌ Not translated | ⚠️ OCR first | ❌ |
Glossary / terminology | ✅ | ✅ | ❌ | ❌ | ❌ |
Tracked changes / legal numbering | ✅ | NA | NA | n/a (PDF) | NA |
Simplified + Traditional Chinese | ✅ | ✅ | ✅ | ✅ | ✅ |
Batch upload | ✅ | ⚠️ Team plan and up | ❌ (one file) | ❌ (one file) | ❌ |
Security certifications | ISO 27001, SOC 2, GDPR | ISO 27001, SOC 2 Type II (Pro) | Consumer terms | ISO 27001, SOC 2 Type II | Microsoft 365 terms |
Trains on your files | ❌ Never | ❌ (Pro) | ⚠️ Not ruled out | ❌ | ❌ |
File retention | Auto-deleted within 24 h | Only as technically needed (Pro) | NA | Deleted after 12 h | Not stored (no-trace) |
On-prem / private cloud | ✅ | ❌ Cloud only (EU hosting options) | ❌ | ❌ | ❌ |
Human review option | ✅ Certified tier | ❌ | ❌ | ❌ | ❌ |
✅ supported · ⚠️ partial or conditional · ❌ not supported. Checked against vendor pages, October 2026. NA = not published by the vendor.
1. Bluente — Best for format-critical documents
Best for: law firms, banks, in-house legal and compliance teams, and anyone sending a translated file straight to a client, court or regulator.
Bluente is built document-first. It rebuilds the file around the translated text, so the layout is preserved rather than reflowed.
What stands out
Preserves tables, footnotes, legal numbering and tracked changes
Built-in OCR translates scanned and image-based pages, including mixed court bundles
120+ languages, with particular strength in Asian and Southeast Asian languages
Custom glossaries keep defined terms consistent across long documents
ISO 27001, SOC 2 and GDPR; documents auto-deleted within 24 hours and never used for AI training
On-premises and private-cloud deployment for teams that can't send files to a public cloud
Watch-outs
More capability than casual users need for a one-off personal document
Test results: On our EN → Simplified Chinese slide test (above), Bluente translated "Table of Contents" correctly as 目录 and kept every numbered badge, line spacing and font weight in place. [TEST RESULT: add the annual-report table page]
Pricing: 5 free pages with no credit card. Pay-per-use from $12 for 20 pages; Professional at $20/user/month; Business plans for teams.
2. DeepL — Best for natural-sounding text on simple files
Best for: text-heavy Word documents and clean PDFs where fluency matters more than complex layout.
DeepL's translation quality is strong, especially for European languages. File translation is limited on the free plan.
What stands out
Very fluent output for many European language pairs
Translates PDF, Word, PowerPoint and Excel files
Pro plans state data is not used for training; ISO 27001 and SOC 2 Type II processes
Watch-outs
Free plan: 1 file translation per month, up to 5 MB. Paid plans range from 3 to 100 files per month depending on tier.
DeepL's own help centre says that if a PDF translation isn't satisfactory, you should upload the original Word or PowerPoint file instead. That's a sign that complex PDF layouts can shift.
PDF-to-Word output requires a higher paid plan
Scan quality, custom fonts and large images affect results
Test results: On the EN → Simplified Chinese slide, DeepL translated the title correctly, but the numbered badges came loose from their labels and the list lost its alignment and typography. [TEST RESULT: add the table page]
3. Google Translate (Documents) — Best free option
Best for: getting the gist of an everyday document quickly, at no cost.
Test results: On the EN → Simplified Chinese slide, Google split "Table of Contents" into 表 / 内容 ("table / content"), a literal mistranslation, and ran the list numbers into the text with inconsistent spacing.
What stands out
Free, fast, no account needed
Broad language coverage
Supports DOCX, PDF, PPTX and XLSX
Watch-outs
Files up to 10 MB; PDFs up to 300 pages
Text inside scanned PDF pages and images is not translated. It is passed through unchanged.
Not available on mobile or small screens
No glossary control. Not suited to confidential or client-facing documents.
4. Adobe Acrobat AI Assistant — Best for Acrobat-centric workflows
Best for: teams that already edit, sign and manage PDFs in Acrobat.
What stands out
Translate from inside Acrobat with a prompt, then save or export the translated PDF
Convenient if the PDF needs further editing after translation
Watch-outs
Scanned PDFs need OCR before translation, and scan quality affects accuracy
Requires a paid plan with AI Assistant; check which tier includes translation
PDF only
Test results: Acrobat could not translate our 26-page Japanese financial filing. [ADD: error message]
5. Microsoft Word — Best for editable drafts
Best for: quick translation of a Word file you plan to edit anyway.
What stands out: built into Microsoft 365 (Review → Translate → Translate Document), and the output is an editable copy.
Watch-outs: Word files only, text in images isn't translated, and there's no glossary control. Requires Microsoft 365 with connected experiences turned on.
Which tool should you choose?
If you need… | Choose |
|---|---|
A translated contract, report or filing that looks like the original | Bluente |
Scanned or image-based pages translated, not skipped | Bluente |
Fluent text on a simple, clean Word file | DeepL |
A free, quick look at an everyday document | Google Translate |
To keep working inside Acrobat | Adobe Acrobat |
A rough editable draft in Word | Microsoft Word |
The real difference: text-first vs. document-first
Most tools are text-first. They pull the words out, translate them and pour them back in. That works for simple files and breaks on the documents professionals actually send: dense tables, numbered clauses, multi-column layouts, scanned exhibits.
Document-first tools treat the layout as part of the job. If the translated file will go to a client, a counterparty or a regulator without someone reformatting it for an hour, that is the distinction that matters.
Translate your first document with Bluente — 5 pages free, no credit card →
FAQ
What is the best document translation tool in 2026?
For professional documents where formatting matters, Bluente preserves layout, tables and scanned content most reliably. DeepL is strong for fluent text on simple files, and Google Translate is the best free option for low-stakes documents.
Which document translator preserves formatting best?
Document-first tools such as Bluente rebuild the file around the translated text, so tables, numbering and headers stay intact. Text-first tools tend to shift layouts on complex PDFs.
Can Google Translate translate scanned PDFs?
No. Google's help page states that text in scanned PDF pages and images is not translated. You need a tool with OCR, such as Bluente.
How many files can I translate with DeepL for free?
DeepL's free plan includes 1 file translation per month, up to 5 MB, as of October 2026.
Is it safe to upload confidential documents to a translation tool?
Check the provider's data-retention and training policies. Bluente is ISO 27001, SOC 2 and GDPR compliant, auto-deletes documents within 24 hours, never trains on customer files, and offers on-premises deployment.
What's the best DeepL alternative for PDFs?
For complex or scanned PDFs, Bluente is a strong DeepL alternative because it preserves layout and translates scanned pages with built-in OCR. See our full list of DeepL alternatives for document translation.
Related: Best PDF translation tools that preserve tables · Best Chinese ↔ English PDF translators · Free vs paid document translators