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How-To2026-03-222 min read

How to Adjust PDF Colors — Brightness, Contrast & Saturation

Adjust PDF Colors


  • Go to Color Adjust
  • Upload your PDF
  • Adjust brightness (-100 to +100)
  • Adjust contrast (-100 to +100)
  • Preview changes on your PDF
  • Click Process & Download

    • Common Adjustments


    ProblemFix

    |---------|-----|

    Too darkIncrease brightness +20 to +40 Too lightDecrease brightness -10 to -20 Washed outIncrease contrast +20 to +30 Too harshDecrease contrast -10 to -20

    Use Cases


  • Fix poorly scanned documents
  • Improve readability of faded text
  • Prepare documents for printing
  • Standardize appearance across merged documents

    • Related Tools


  • Grayscale PDF — convert to black & white
  • Add Background — change page background color
  • Deskew PDF — straighten tilted scans

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