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Founded in 2007, Tenorshare PDNob is trusted by millions to simplify work.
Translate Scanned PDF Online Free
Translate scanned PDFs into 40+ languages instantly — OCR-powered, layout-preserved, no software needed.
- OCR-Powered Scanned PDF Translation
- Original Layout Retained
- 40+ Languages Supported
2,068,190 files have been successfully translated for free.
Get PDNob Desktop, Your All-in-One PDF Solution!
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Desktop: Fast & Smooth – Large PDFs, zero lag.
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Batch & Automation: save valuable time.
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Full-featured: convert, edit, AI OCR, annotate, compress, etc.
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Advanced OCR: 99% high accuracy OCR.
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Secure & Stable: Work offline with full functionality.
How to Translate Scanned PDF Online Free with PDNob?
Convert any scanned PDF to a translated document in 3 easy steps — no installation required.
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step 1
Upload your scanned PDF to PDNob — sign in to your account to get started.
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step 2
Select your target language from 40+ supported options and click Translate.
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step 3
Download your translated PDF with the original page layout fully intact.
Why Use PDNob to Translate Scanned PDF
Purpose-built OCR and AI translation work together so your scanned documents read naturally in any language.
Built-in OCR for Scanned PDFs
PDNob automatically detects image-based and scanned PDFs, applying OCR to extract text before translation begins — no extra steps needed on your end.
Layout Preserved After Translation
Columns, tables, headers, images, and page structure are retained in the output file so the translated document looks as close to the original as possible.
40+ Target Languages
Translate scanned PDF into English, Chinese, Spanish, French, German, Japanese, Korean, Arabic, Portuguese, and dozens more — all from a single tool.
Context-Aware AI Translation Engine
The AI reads whole sentences and paragraphs — not word by word — so translated text flows naturally and technical or legal terms are handled with greater precision.
Ad-Free Cloud Experience
Work without distractions. PDNob's cloud translation tool runs ad-free so you can focus on your documents — sign in to access the tool from any browser.
Encrypted & Private Processing
Every file is transferred over SSL and removed from PDNob servers as soon as processing is done. Your scanned documents are never stored or shared.
Need More Than Scanned PDF Translation?
PDNob has you covered!
This AI-powered PDF editor offers advanced editing, smart annotations, precise OCR scanning, and batch processing, etc — all offline. Ideal for students, professionals, and efficient document management.
FAQ about How to Translate Scanned PDF
Can I translate scanned PDF without retyping the text?
Yes. PDNob uses built-in OCR to read the text from scanned or image-based PDFs automatically. You simply upload the file, choose your target language, and the tool handles text extraction and translation in one step — no manual retyping required.
What file size is supported when I translate scanned PDF online?
The free plan accepts scanned PDF files up to 15MB. If your document exceeds that limit, upgrading to a PDNob paid plan raises the upload ceiling to 100MB. For very large scanned archives, PDNob Desktop offers the most flexibility with no cloud upload constraints.
Does PDNob keep the original layout when translating a scanned PDF?
PDNob makes every effort to preserve the page structure — including columns, tables, images, and paragraph spacing. Because translated text expands or contracts relative to the source, minor spacing adjustments can occur, but the overall document structure stays intact.
Do I need an account to translate scanned PDFs with PDNob?
Yes, a free PDNob account is required to access the cloud-based translation feature. Registration takes under a minute and gives you access to scanned PDF translation along with the full suite of online PDF tools.
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How accurate is OCR when translating a scanned PDF?
OCR accuracy depends largely on scan quality. PDNob delivers strong results for clearly scanned documents with good contrast and standard fonts. Low-resolution scans, handwriting, or documents with heavy watermarks may produce less precise text extraction, which can affect translation quality.
Can I translate a scanned PDF into English from another language?
Yes. PDNob supports translation in both directions across 40+ languages. You can translate a scanned PDF from Chinese, Spanish, French, German, Japanese, Arabic, or any other supported source language into English — or translate English documents into those languages.
Can I translate multiple scanned PDFs at the same time?
Batch translation of scanned PDFs is available on the PDNob paid plan. The free plan processes one file at a time. If you regularly work with large volumes of scanned documents, PDNob Desktop supports batch processing offline without file size restrictions.
Is my scanned PDF secure when I upload it for translation?
All uploads are protected by SSL encryption in transit, and PDNob automatically deletes your files from its servers once translation is complete. Your documents are not retained, reviewed, or shared with any third parties.
What types of scanned PDFs work best with PDNob?
PDNob performs best with high-contrast, clearly scanned documents such as contracts, academic papers, reports, and official certificates. Scans with at least 150 DPI resolution produce the most reliable OCR results. Very faded documents or those with dense background patterns may require higher-resolution rescanning for best output.
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