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Invert PDF Colours

Switch dark-on-light documents into high-contrast dark mode for night reading.

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Step-by-Step Guide

How to use Invert PDF Colours

Upload your PDF

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Select the PDF you want to invert.

Preview a page

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Optionally preview the inversion on a single page before processing the whole document.

Invert

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Click "Invert Colours". All pages are processed.

Download

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Save the colour-inverted PDF.

Best Practices

Tip 1

Inversion works best for high-contrast black-and-white documents. Colour images may produce unexpected results.

Tip 2

After inversion, colours return to normal if you invert again — the operation is self-reversible.

Common Questions

: Colour inversion is a pixel-level operation applied to page renders. Some anti-aliasing artefacts may be visible at the edges of text, similar to other image-based processing.

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