How It Works

Upload your PDF or image file, choose a replacement color for black pixels, adjust the precision slider to control how "black" a pixel needs to be for replacement, then download your modified file. Perfect for printing when you're low on black ink!

or drag and drop your PDF or image files here

Supported formats: PDF, JPG, PNG, GIF, BMP, TIFF

Black Detection Precision

How precisely black should a pixel be to get replaced? (0 = only pure black, 100 = very dark colors too)

Pure Black Only 15% Include Dark Colors

Replacement Color

Choose which color to replace black pixels with:

Navy Blue
Dark Green
Maroon
Purple
Brown

Processing Complete!

Your files have been processed successfully. Black pixels have been replaced with your chosen color.