AntiUpload// files stay on your deviceENSESSION · 000RLB
← Back to all tools
🔍

OCR PDF

Make scanned PDFs searchable — recognition runs on your device, and the pages stay pixel-identical

Drop your PDF file here

or

Up to 200MB on this device — processed in RAM, never uploaded

100% Local Processing
Zero Server Uploads

About OCR PDF

OCR PDF keeps the complete file workflow inside this browser tab. Your selected file, its name, contents, settings, and generated output are not sent to AntiUpload or a cloud conversion service. Ads and aggregate traffic analytics stay outside the processing boundary and receive no file object or working buffer.

OCR PDF adds an invisible text layer to scanned document pages without changing how those pages look. The tool detects pages that already contain selectable text and leaves them untouched, then recognizes only the scanned pages or page range you choose. Search, copy, screen-reader navigation, and document indexing become possible while the original page pixels remain visible.

Recognition runs locally in your browser. Selecting a language downloads the matching recognition model to your device; the PDF is never sent with that request. After processing, AntiUpload reports confidence and word counts per page, flags low-confidence pages, and lets you download a quality report or retry only the pages that need attention.

How it works

  1. Choose a scanned PDFOpen the document locally. AntiUpload checks each page for an existing text layer so digitally generated pages are not needlessly reprocessed.
  2. Select the language and pagesChoose the document language and optionally enter a page range such as 1-5, 8. Multilingual language pairs are available for mixed documents.
  3. Run private recognitionTesseract recognizes words on your device and places an invisible text layer at their page positions while preserving the scanned image.
  4. Review the quality reportCheck confidence and word counts by page, retry low-confidence pages if needed, then save the verified searchable PDF and optional text report.

When to use OCR PDF

Search an old scanned contract
Add a text layer so names, dates, clauses, and reference numbers can be found without visually checking every page.
Make receipts and records copyable
Turn image-only receipts, statements, or archived forms into documents whose text can be selected and pasted into another workflow.
Improve access to scanned handouts
Give assistive technology a text layer to work with while keeping the original scan unchanged; then use the accessibility checker to find remaining issues.

Frequently asked questions

Is my PDF uploaded for recognition?
No. Recognition runs inside your browser. Language data is downloaded to your device when needed, but your document is never sent to the model host or AntiUpload. Input files are read from browser memory and the output is created locally for your download. AntiUpload does not send file bytes, names, sizes, page counts, contents, passwords, or generated outputs through analytics or advertising requests.
Does OCR PDF change the appearance of my scan?
No. It keeps the original page image and adds invisible positioned text behind it. The document should look the same before and after recognition.
Why is a page marked low confidence?
Blur, skew, handwriting, unusual fonts, faint ink, or the wrong language selection can lower confidence. Check the chosen language and retry the flagged pages; the page image remains untouched even when recognition is imperfect.
What happens to pages that already contain text?
They pass through without OCR. This avoids duplicate text layers and makes mixed scanned-and-digital PDFs faster to process.

Related tools

Image to Text (OCR)Extract text from an image with OCR — 100% in your browser, your photo never uploadedPDF Accessibility CheckerCheck whether a screen reader can use your PDF — tags, language, title, text layer — with plain-language fixesPDF to WordConvert PDF to editable Word document with smart layout analysisCompress PDFReduce PDF file size without losing quality

About OCR PDF

OCR PDF keeps the complete file workflow inside this browser tab. Your selected file, its name, contents, settings, and generated output are not sent to AntiUpload or a cloud conversion service. Ads and aggregate traffic analytics stay outside the processing boundary and receive no file object or working buffer.

OCR PDF adds an invisible text layer to scanned document pages without changing how those pages look. The tool detects pages that already contain selectable text and leaves them untouched, then recognizes only the scanned pages or page range you choose. Search, copy, screen-reader navigation, and document indexing become possible while the original page pixels remain visible.

Recognition runs locally in your browser. Selecting a language downloads the matching recognition model to your device; the PDF is never sent with that request. After processing, AntiUpload reports confidence and word counts per page, flags low-confidence pages, and lets you download a quality report or retry only the pages that need attention.

How it works

  1. Choose a scanned PDFOpen the document locally. AntiUpload checks each page for an existing text layer so digitally generated pages are not needlessly reprocessed.
  2. Select the language and pagesChoose the document language and optionally enter a page range such as 1-5, 8. Multilingual language pairs are available for mixed documents.
  3. Run private recognitionTesseract recognizes words on your device and places an invisible text layer at their page positions while preserving the scanned image.
  4. Review the quality reportCheck confidence and word counts by page, retry low-confidence pages if needed, then save the verified searchable PDF and optional text report.

When to use OCR PDF

Search an old scanned contract
Add a text layer so names, dates, clauses, and reference numbers can be found without visually checking every page.
Make receipts and records copyable
Turn image-only receipts, statements, or archived forms into documents whose text can be selected and pasted into another workflow.
Improve access to scanned handouts
Give assistive technology a text layer to work with while keeping the original scan unchanged; then use the accessibility checker to find remaining issues.

Frequently asked questions

Is my PDF uploaded for recognition?
No. Recognition runs inside your browser. Language data is downloaded to your device when needed, but your document is never sent to the model host or AntiUpload. Input files are read from browser memory and the output is created locally for your download. AntiUpload does not send file bytes, names, sizes, page counts, contents, passwords, or generated outputs through analytics or advertising requests.
Does OCR PDF change the appearance of my scan?
No. It keeps the original page image and adds invisible positioned text behind it. The document should look the same before and after recognition.
Why is a page marked low confidence?
Blur, skew, handwriting, unusual fonts, faint ink, or the wrong language selection can lower confidence. Check the chosen language and retry the flagged pages; the page image remains untouched even when recognition is imperfect.
What happens to pages that already contain text?
They pass through without OCR. This avoids duplicate text layers and makes mixed scanned-and-digital PDFs faster to process.

Related tools

Image to Text (OCR)Extract text from an image with OCR — 100% in your browser, your photo never uploadedPDF Accessibility CheckerCheck whether a screen reader can use your PDF — tags, language, title, text layer — with plain-language fixesPDF to WordConvert PDF to editable Word document with smart layout analysisCompress PDFReduce PDF file size without losing quality