Translate PDF Documents into Multiple Languages

Micro PDF’s PDF translator directly translates text content in PDFs without manual copy-paste. Supports 20+ languages including Chinese, English, Japanese, Korean, and more. Translation preserves original file formatting, images, and layout—perfect for reading foreign academic papers, cross-border contract translation, and multilingual document processing.

Whether it’s a 5-page short document or a 50-page long report, Micro PDF delivers fast translation. Free users access basic translation features for everyday cross-language reading needs.

Table of Contents

• Key Features
• How to Translate PDF Files with Micro PDF
• Supported Languages & Translation Scenarios
• Post-Translation PDF Processing Tools
• Cross-Platform Support & Translation Efficiency
• Frequently Asked Questions

Key Features

• Multi-language translation: Supports 20+ languages for bidirectional translation (e.g., Chinese→English, English→Japanese, Japanese→Korean) covering mainstream languages.
• Format preservation: Maintains original PDF fonts, layout, images, and table positions—only replacing text content.
• Two translation modes: “Full Translation” (translate all editable text) and “Selective Translation” (manually select paragraphs to translate).
• Free basic features: PDFs up to 10 pages and 10MB free per day (3 translation attempts); no registration required.
• Fast and accurate: Uses AI translation engine; short-sentence accuracy reaches 95%+; 5-page documents complete in under 30 seconds.

How to Translate PDF Files with Micro PDF

The Micro PDF PDF translator is simple—3 steps to complete translation:

1. Visit the Micro PDF website: Micro PDF and click the PDF Translator tool.
2. Upload your PDF file (drag-and-drop supported; must be editable text PDF—scanned documents require prior OCR processing).
3. Select source language (auto-detect or manual) and target language (e.g., “Chinese→English”), choose translation mode (default: “Full Translation”). Click Start Translation, then click Download Translated File.

Pro Translation Tips

• Pre-process scanned documents: For image PDFs, first use OCR to convert to editable text, then translate.
• Selective translation: For foreign documents requiring only partial paragraph translation, use “Box Selection Translation” for precise translation and avoid full-translation redundancy.
• Proofread professional terms: After translating legal, medical, or other professional documents, manually proofread professional terms for accuracy.

Supported Languages & Translation Scenarios

Micro PDF supports mainstream translation languages and scenarios:

Post-Translation PDF Processing Tools

After translation, use Micro PDF’s other tools for optimization:

• Edit PDF: Modify translated text, adjust sentence fluency, or correct professional terms.
• PDF Merge: Combine original PDF with translated PDF for side-by-side reading.
• PDF Conversion: Convert translated PDF to Word for further editing or formatting.
• PDF Encryption: Set password protection for sensitive translated documents (e.g., contracts).

Cross-Platform Support & Translation Efficiency

Micro PDF PDF translator adapts to different devices:

• Web browser: Desktop browser supports large file translation; provides “Professional Term Library” (add custom vocabulary, VIP feature) for professional document translation.
• Mobile app: Micro PDF WeChat Mini Program supports quick translation of short PDFs; touch-screen box selection for translation paragraphs more convenient for ad-hoc foreign document review.
• Desktop client: Supports batch translation of multiple files (up to 5); 40% faster than web version with offline translation support (download language packs first).

Frequently Asked Questions

1. What limitations apply to free PDF translation?

Free users: files up to 10 pages and 10MB, 3 daily translation attempts with no watermarks; VIP users have no page/size/attempt limits and unlock professional term library and batch translation.

2. Can I translate scanned PDFs or text in images?

Requires preprocessing: scanned documents or image PDFs need OCR to convert to editable text first, then translate (OCR+translation can be linked for efficiency).

3. Will translated PDF formatting become disordered?

Generally no. The tool only replaces text content while maintaining original font sizes, line spacing, and layout, though complex tables or multi-column layouts may show minor deviations—preview and adjust recommended after translation.

4. How accurate is translation for professional fields (e.g., legal, medical)?

Basic vocabulary accuracy reaches 90%+; professional terms may have deviations. VIP users can use “Professional Term Library” to customize vocabulary translation results, improving professional document translation accuracy.

5. Can I translate multiple PDF files simultaneously?

Not supported for free users; VIP users can upload 5 files for simultaneous translation with identical language settings for automatic processing—saving time.

6. Does the translated file retain the original text?

Default: no retention—generates pure translated PDF only. For original comparison, select “Bilingual Comparison” mode (VIP) to generate PDF with original and translated text in上下/左右 comparison.

7. Will file content be leaked during translation?

No. Files are only temporarily processed during translation; automatically deleted after completion (download or 24 hours later); servers store no original or translated content—compliant with data security standards.