Invert PDF Colors
Flip every page to a dark-mode-friendly negative. Black becomes white, white becomes black — great for night reading and high-contrast printing.
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Invert PDF Colors — Frequently Asked Questions
What does inverting colors do to a PDF?
It flips the color of every pixel — black text on white becomes white text on black, dark images become light, and vice versa. The result is a dark-mode-friendly copy that's easier to read at night or on low-brightness screens.
Will inverted text stay searchable or selectable?
No. Inversion works by rasterizing each page to an image and then recoloring the pixels. The output is a picture of the page, so text is no longer selectable or searchable. If you need searchable dark-mode viewing, use a PDF reader with a built-in night mode instead.
Why does the output file look bigger than the original?
The original PDF often contains vector text and compressed objects; the inverted version is made of PNG images, which are larger. Lowering the render quality slider reduces the file size at the cost of some sharpness.
What does the render quality slider do?
It controls how densely each page is rasterized. 1.0 renders at screen resolution (smallest file, softer text). 1.5 is a balanced default. 3.0 gives crisp print-quality output but significantly larger files.
What does inverting colors do to a PDF?
It flips the color of every pixel — black text on white becomes white text on black, dark images become light, and vice versa. The result is a dark-mode-friendly copy that's easier to read at night or on low-brightness screens.
Will inverted text stay searchable or selectable?
No. Inversion works by rasterizing each page to an image and then recoloring the pixels. The output is a picture of the page, so text is no longer selectable or searchable. If you need searchable dark-mode viewing, use a PDF reader with a built-in night mode instead.
Why does the output file look bigger than the original?
The original PDF often contains vector text and compressed objects; the inverted version is made of PNG images, which are larger. Lowering the render quality slider reduces the file size at the cost of some sharpness.
What does the render quality slider do?
It controls how densely each page is rasterized. 1.0 renders at screen resolution (smallest file, softer text). 1.5 is a balanced default. 3.0 gives crisp print-quality output but significantly larger files.