PDF Dark
PDF Dark converts any PDF into a real dark-mode file you can download, share, and reread anywhere. The entire conversion happens in your browser, so your file never touches a...
What is PDF Dark?
PDF Dark converts any PDF into a real dark-mode file you can download, share, and reread anywhere. The entire conversion happens in your browser, so your file never touches a server — verifiable in DevTools. A saturation-based algorithm preserves photos and charts in their original colors while darkening text, backgrounds, and shapes. Output is a standard PDF (not a viewer toggle), so it stays dark on Kindle, iPad, Acrobat, anywhere. Free, MIT-licensed, no signup, no ads, no upload.
Key Features
100% in-browser
Your PDF never leaves your device. Verify the zero upload in DevTools.
Photos stay original
Saturation-based algorithm preserves images and charts while darkening text and backgrounds.
Real dark PDF output
Download a standard PDF that stays dark on Kindle, iPad, Acrobat — not a viewer toggle.
Free & open source
MIT licensed, no signup, no ads. Read the source on GitHub.
Tool Information
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