Translate PDF
Upload a PDF and translate its content to 25+ languages using AI.
Upload your PDF
Drop in any text-based PDF. Scanned documents are OCR'd automatically.
Select target language
Choose from 25 supported languages including Spanish, French, Japanese, Arabic, and Hindi.
Download translated PDF
AI translates block by block and overlays the result onto the original layout.
Frequently Asked Questions
Spanish, French, German, Portuguese, Italian, Dutch, Russian, Chinese (Simplified & Traditional), Japanese, Korean, Arabic, Hindi, Bengali, Turkish, Polish, Swedish, Danish, Norwegian, Finnish, Czech, Romanian, Hungarian, Thai, Vietnamese.
Yes. Text is extracted block by block, translated, and overlaid back onto the original positions — images, columns, and tables stay in place.
Yes — scanned documents are passed through our OCR engine first, then translated.
Translation quality is high for most content, powered by Claude AI. Technical jargon (legal, medical) may need a professional review.
Up to 25 MB free. Pro supports 100 MB, Max 150 MB, UltraMax 200 MB.
Why SynthPDF?
25+ languages
Spanish, French, German, Chinese, Japanese, Arabic, Hindi, and 18 more. Automatic language detection means you don't need to specify the source language.
Layout preserved
Text is translated block-by-block and overlaid back onto the original positions — columns, tables, images, and formatting stay intact.
Works on scanned PDFs
Scanned documents are OCR'd automatically before translation — no separate step needed.
Powered by Claude AI
Translation is handled by Anthropic's Claude — accurate for general, business, legal, and medical content across all 25 languages.
Download as PDF
The translated document downloads as a PDF with the same layout as the original — ready to share, print, or archive.
Free, no account needed
5 AI uses per day on the free plan. Pro gives 15/day, Max gives 100/day, UltraMax is unlimited.
Why PDF Translation Is Hard (and How We Solve It)
Copy-pasting text from a PDF into Google Translate destroys all formatting — you get jumbled line breaks, missing spaces, and garbled column order. For a two-column academic paper or a formatted invoice, the result is unreadable.
SynthPDF's translator works at the block level: it identifies each text region in the PDF, translates it independently while preserving context, and writes the translated text back into the exact position of the original — so your translated document looks like the original, just in another language.
Spanish, French, German, Portuguese, Italian, Dutch, Russian, Chinese (Simplified and Traditional), Japanese, Korean, Arabic, Hindi, Bengali, Turkish, Polish, Swedish, Danish, Norwegian, Finnish, Czech, Romanian, Hungarian, Thai, and Vietnamese.
Common Use Cases
- Legal contracts for international clients — translate the document while preserving clause structure and formatting
- Medical reports from abroad — understand diagnosis, medication names, and dosage from foreign hospital records
- Academic papers in foreign languages — translate research for citation and review without losing figure captions and tables
- Immigration documents — translate passports, birth certificates, and official records
- Product manuals — translate technical instructions for international teams
Translation Quality: What to Expect
For standard prose — business documents, news articles, and general text — translation quality is excellent. Technical, legal, and medical documents may contain domain-specific terms that benefit from a human review of key sections. The AI preserves numbers, dates, and proper nouns accurately.
For best results: use the highest-quality scan or the original digital PDF. Blurry or low-resolution scans produce lower OCR accuracy, which leads to translation errors.
Build Language-Pair Landing Pages
Need to translate specific language pairs regularly? Bookmark our direct links for the most common combinations — or use our API to automate bulk PDF translation in your workflow.
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Want to learn more?
Read: How to Translate a PDF in 60 Seconds →