Scanned PDF guide

Scanned PDF vs OCR PDF: what is the difference?

Learn the difference between image-based scanned PDFs and OCR PDFs before choosing cleanup or text extraction. RedesignPDF is designed for review-first visual scanned PDF cleanup and image-based PDF export, not for creating editable OCR text.

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Real user problem patterns

  • Text is not selectable
  • OCR output is messy
  • Scanned PDF cannot be edited
  • Layout changes after conversion

Specific steps

  1. Check whether text is selectable.
  2. Decide whether you need visual cleanup or OCR.
  3. Improve scan quality first.
  4. Run OCR separately if needed.
  5. Review OCR results.
  6. Keep the original scan for reference.

Visual examples

Best for

  • Scanned PDF pages with visible text
  • Flattened or image-based documents
  • Files where visual readability is the goal

Not for

  • Precise text-layer editing
  • Certified legal restoration
  • Automatic data extraction without review

Common mistakes

  • Over-whitening the page until thin lines disappear.
  • Treating visual cleanup as OCR or text conversion.
  • Exporting without reviewing numbers, dates, tables, and handwriting.

Recommended prompts

  • Clean this scanned PDF page, reduce gray background, shadows, stains, and scan noise, darken faded text, and keep the original layout unchanged.
  • Make this scanned page easier to read with minimal changes: gently brighten the paper, improve text contrast, reduce visible scanner noise, and preserve handwriting, stamps, tables, and marks.
  • Apply a conservative cleanup: improve readability, reduce scanner artifacts, and preserve the original layout, handwriting, stamps, tables, and marks.

FAQ

Can RedesignPDF explain scanned PDF vs OCR PDF?

RedesignPDF can improve the visible scanned page image. Review the result before exporting.

Will the exported PDF have selectable text?

The export can be image-based. Use OCR separately if you need searchable or selectable text.

Should I use this for official records?

Use caution. RedesignPDF is for readability cleanup, not certified document restoration.