Invert Every Colour on a PDF's Pages
Flip every colour on every page to its opposite.
Select a PDF
Click to choose, or drop a file here
You can also paste (Ctrl+V / Cmd+V)
Most tools run entirely on your device
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About inverting PDF colors
Inverting flips every color on a page to its opposite — white becomes black, each color swaps to its complement — the same effect as photo negative film. It's mostly used as a step toward a fully dark-themed document, or for a specific visual effect a normal edit can't easily produce.
Every page is re-rendered as an image with pdf.js, each pixel's color is inverted, and the PDF is rebuilt from the inverted pages with pdf-lib — entirely in your browser. If your goal is specifically a comfortable dark-mode reading document rather than a literal color inversion, PDF Dark Mode is tuned for that instead — it keeps colored content recognizable rather than inverting it outright.
Supported files
Accepts a PDF. Produces the same PDF with every page's colors inverted.
Is my file uploaded?
No. Inversion runs entirely in your browser with pdf.js and pdf-lib — nothing is uploaded.
How to Invert PDF Colors
- 1
Select a PDF
Drop in the document you want to invert.
- 2
Invert it
Every colour is flipped to its opposite.
- 3
Download the result
Save the inverted PDF.
Invert PDF Colors — frequently asked questions
Isn't this the same as dark mode?+
Not quite — inversion flips hue too, so blues become orange. PDF Dark Mode keeps colours recognisable.
Is there a free way to invert a PDF's colours?+
Yes — this tool inverts every page's colours entirely in your browser, free and with nothing uploaded.
Does it work on a document with photos?+
Yes, though photos generally look strange when inverted since every hue flips to its opposite — this effect suits text-heavy documents and simple graphics best.
Is my file uploaded to invert it?+
No — the inversion runs entirely in your browser.
Do you upload my files to a server?+
No — every tool here processes your files entirely on your device, and nothing is uploaded to a server. The only exception is the AI tools, which send the extracted text (not the file) to Claude to do their work.
Is there a file size limit?+
There's no artificial limit we impose, but since processing happens in your browser, very large files (500+ MB or 1,000+ pages) are limited by your device's memory rather than by us.
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