Invert PDF Colors
Invert page colors (white background to dark background) for comfortable night reading.
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Tool Configuration
About this tool
Transforms standard black-on-white PDF pages into high-contrast white-on-dark pages by inverting RGB channels `(255 - R, 255 - G, 255 - B)` across every page.
Note: Color inversion processes each page as a raster bitmap so all backgrounds and embedded diagrams are inverted uniformly.