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Invert PDF Colors: Dark Mode PDF or Negative
Invert the colours of a PDF in your browser: dark mode swaps white pages for black and black text for white while keeping the hue of coloured text and highlights, and the negative inverts every colour, as for film. Pages are saved at their original size.
Invert PDF Colors: Dark Mode PDF or Negative: The negative replaces every colour with its opposite, so white becomes black and red becomes cyan. Dark mode flips lightness but keeps hue: white becomes black, a dark blue of 30, 60, 90 becomes a light blue of 165, 195, 225, and pure red stays red. Pages are rebuilt as images, so text can no longer be selected. Runs 100% locally in your browser with zero server file uploads.
- Category
- PDF tools
- Runs
- In your browser
- Cost
- Free · no sign-up
- Availability
- Ready to use
Runs entirely in your browser
Nothing is uploaded
Dark pages, colours kept swaps light and dark but keeps each colour's hue, so red stays red; the negative inverts everything, photos included. Each page is drawn as an image, so text can no longer be selected or searched. Nothing is uploaded.
Reading on screen
Many PDF readers have their own dark or night mode that keeps text selectable; this tool makes a file that stays dark in any reader and on any device.
Grayscale
To remove colour instead of inverting it, use grayscale PDF.
How to use it
- Choose a PDF.
- Pick dark mode with colours kept, or a full negative.
- Download the inverted PDF.
Privacy & limitations
Your PDF is converted in your browser and never uploaded.
Related tools
Frequently asked questions
Which style should I use for reading at night?
Dark mode with colours kept: links, highlights, and coloured headings stay recognisable, while white pages turn black.
Do photos look right?
Not in the negative, where they look like film negatives; dark mode keeps their hues but flips light and dark, so view photos in the original.
Why is the file bigger?
Each page is saved as an image; choose a lower resolution for a smaller file.
Free tool · runs in your browser · no account required