Invert the colours of a PDF
Create a negative of your PDF: white becomes black, black becomes white. Useful for dark mode, less toner when printing or night reading. Locally, no upload.
Choose your PDF
Drop here or click to choose
Files stay on your device — nothing is uploaded
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Your file is processed in your browser and never uploaded.
How does it work?
- 1
Choose your PDF
Drag the PDF here.
- 2
Invert
Each page has its colours flipped.
- 3
Download
Download the inverted PDF.
Frequently asked questions
Does text stay readable?
Yes, text on a white background becomes white text on a black background.
Is there quality loss?
Pages are converted to JPEG images, similar to the compress tool. Text is no longer selectable.
Are my files uploaded?
No. Everything happens in your own browser. Your file never leaves your device and is not stored anywhere.
Is it free?
Yes, completely free, without watermark or account. The site is paid for by ads.
More reading
Why in the browser?
PDFrust runs entirely in your browser using WebAssembly and modern JavaScript libraries such as pdf-lib and PDF.js. Your file is never sent to a server — all processing happens locally on your device. This means your documents remain private by design, regardless of what they contain. There is no account required, no file size limit, and nothing is stored after you close the tab.
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