HardTrans Sign in

Where Google Translate gives up

HardTrans — AI translation with whole-document context

First document up to 10 pages — free

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PDF — text-layer PDFs only. Scans and page photographs are not supported yet.

XLIFF — .xliff, .xlf, .sdlxliff (Trados), .mqxlz, .mqxliff (memoQ), .mxliff (Phrase / Memsource), and Smartcat XLIFF.

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DOCX · XLSX · PPTX · PDF · XLIFF

Max 50MB per file

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Translation rules, terminology preferences, style guide

How translation works

  1. 1 Upload one file or several — DOCX, XLSX, PPTX, PDF, or XLIFF
  2. 2 AI analyzes all the files together: it maps the terminology, picks one style, and translates each document with the others in view.
  3. 3 Download the finished files in the original format, with tables, lists, and structure preserved.

Why Google Translate and DeepL fall short on hard documents

Machine translationHardTrans
ContextSentence by sentenceThe whole document at once
TerminologyVaries between adjacent paragraphsOne term = one translation
FormattingNot guaranteedFully preserved
InstructionsNoneFollows your style, terminology and requirements
GlossaryNoneYour glossary is law
CAT formatsNot supportedXLIFF (Trados, memoQ, Phrase, Smartcat)

Real example: German engineering specification

German → English. Excerpt from a pump/drive technical spec.

Google Translate

The pump must be designed for an output of 75 kW.

The performance of the drive must be documented in the acceptance report.

The housing is made of material 1.4541.

All seals must be checked before acceptance.

8 terminology & register issues
HardTrans

The pump shall be designed for a power of 75 kW.

The power of the drive shall be documented in the acceptance report.

The casing is made of material X6CrNiTi18-10 (AISI 321).

All seals shall be inspected prior to acceptance.

All 8 — correct & consistent
output / performance → power Google renders the same German term «Leistung» two different ways, and the second one is wrong. HardTrans uses one English term throughout.
must → shall Normative specifications express requirements with «shall», not «must».
1.4541 → X6CrNiTi18-10 (AISI 321) Google leaves the bare material number. HardTrans pulls the steel grade from your glossary.
housing → casing For a pump, the correct component term is «casing».

Real output: Google Translate vs HardTrans (Claude Sonnet 4.6 with your glossary), June 2026.

More examples — legal, medical, scientific →

Pricing & turnaround

Machine translation

$0

No context, no guarantees. Instant.

HardTrans

$1.50/page

Whole-document context + terminology + formatting.
10 pages ~5 min, 100 pages ~30 min.

Professional translator

~$12.50/page

$0.05/word, translator + editor. 1–3 business days.

First document up to 10 pages — free, no signup, no card. After that, $1.50 per page (250 words), paid securely by card.

Free translation tools go sentence by sentence. HardTrans reads the whole document first, then translates it as one job.

  • Consistent terminology: one term, one translation across the whole document
  • A ready-to-use file: tables, lists, and styles in place, no manual fixes
  • Follows your glossary and instructions: your term list is applied on every page

Who it's for

Translators

Pre-translate with consistent terminology — no copy-pasting into ChatGPT, no confidentiality risk. Accepts XLIFF from most CAT tools (Trados, memoQ, Phrase, Smartcat), plus DOCX, XLSX, PPTX and PDF.

Engineers & technical writers

Manuals, specifications and datasheets — terminology, lists and tables kept intact. No round-trip to a translation agency.

Medical organizations

Drug leaflets, clinical protocols and registration dossiers — with consistent medical terminology.

Lawyers

Contracts, patent and corporate documents — structure preserved and legal register understood.

Researchers

Papers and reports — with your field's terminology. One term is translated the same way throughout the document.

AI translation is a high-quality draft, not a final publication. For high-stakes documents we recommend professional review.

Supported formats & languages

DOCX XLSX PPTX
PDF?
PDFs with a text layer only (scans and page photographs are not supported yet). The PDF parser is in beta — formatting may differ slightly from the original.
XLIFF?
Extensions: .xliff, .xlf, .sdlxliff (Trados), .mqxlz, .mqxliff (memoQ), .mxliff (Phrase / Memsource), and Smartcat XLIFF.

Translate from any language into English, German, French, Chinese, Japanese, Arabic, Spanish, Italian, Korean, Portuguese, Turkish, or Russian.

Privacy & security

  • Everything you upload travels over HTTPS
  • Files are deleted from our servers automatically after 7 days; until then you can re-download them
  • Only you can see your files; we never share them with third parties
  • Your text is never used to train models — neither by us nor by Anthropic, the model provider
  • Anthropic retains API data for a limited period under its policy and does not train on it
  • If your contract or security policy forbids sending data to a third party, no cloud service fits — ours included

FAQ

How is HardTrans different from Google Translate?
HardTrans analyzes the whole document instead of translating sentence by sentence. That keeps terminology consistent from the first page to the last, accounts for context and style, and preserves formatting — tables, lists, numbering.
Can I use AI translation for medical documents?
HardTrans translates medical documents — drug leaflets, clinical protocols, registration dossiers — with consistent medical terminology. For legally or regulatory-significant documents we recommend professional review.
How accurate is it compared to a professional translator?
On technical, medical and legal texts HardTrans reaches quality close to a professional translator's first pass. The difference is speed and consistency: the AI doesn't get tired by page 50 and start translating the same term two ways. For final publication we recommend review.
Which document formats are supported?
DOCX (Word), XLSX (Excel), PPTX (PowerPoint), text-layer PDF (scans not supported yet), and XLIFF from professional CAT tools: .xliff, .xlf, .sdlxliff (Trados), .mqxlz / .mqxliff (memoQ), .mxliff (Phrase / Memsource) and Smartcat.
Which languages are available?
HardTrans translates from any language into 12: English, German, French, Chinese, Japanese, Arabic, Spanish, Italian, Korean, Portuguese, Turkish, Russian. The source language is detected automatically.
How much does it cost?
$1.50 per page (250 words). The first document up to 10 pages is free — no signup, no card. The price covers terminology analysis, whole-document context, and formatting kept intact.
Is it safe to upload confidential documents?
All data is transmitted over HTTPS. Files are deleted from our servers automatically after 7 days; until then you can re-download them. Your text is never used to train models — neither by us nor by Anthropic, the model provider. Anthropic retains API data for a limited period under its policy and does not train on it.
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