Invert PDF Colours Free
Convert to permanent dark mode, sepia, or grayscale. Text stays selectable. No upload, no watermark.
Drop a PDF file here
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Frequently asked questions
Everything runs entirely in your browser using WebAssembly. Your files never leave your device — no upload, no server, no cloud.
No artificial limit. Processing capacity depends only on your device's available memory. Desktop browsers typically handle files up to 500 MB.
Never. ILikePdf does not add watermarks to any output file, free or otherwise.
Yes. The tool works in any modern mobile browser (Chrome, Safari, Firefox) on Android and iPhone with no app installation.
Yes. All content including text, images, and vector graphics is colour-inverted. White backgrounds become black and vice versa.