Adjust Colors/Contrast
Enhance PDF appearance with color, brightness, and contrast adjustments.
Color Adjustments
Effects
How to Adjust PDF Colors and Contrast Online
Select a PDF from your device.
Adjust brightness, contrast, saturation and gamma, or select a color effect.
Adjust the sliders to compare this page. The preview uses the export color settings at a lower resolution; the downloaded PDF may look slightly different.
Apply the settings to every page and download the image-based PDF.
Frequently Asked Questions
Increase contrast gradually. Increase gamma to brighten midtones or reduce gamma to darken them. Download and inspect the result before discarding the original.
No. The output contains page images, so searchable text, links and interactive forms are not retained. Keep the original if you need those features.
Adjust the sliders to compare this page. The preview uses the export color settings at a lower resolution; the downloaded PDF may look slightly different.
Settings apply to every page. Use Extract Pages first if you only need a selection.