What is Invert PDF Colors / Dark Mode?
Invert PDF Colors / Dark Mode is a free online tool that recolors a PDF in your browser. Pick Photo-negative to flip every color to its opposite, Dark mode to keep colors roughly natural on a dark page for comfortable night reading, or Invert + grayscale for a black page with monochrome content. Choose a resolution, select all pages or a custom range like 1-3,5, preview the effect on page one, then download a fresh PDF. Everything runs on your device — your document is never uploaded.
Common Use Cases
Night Reading
Rebuild a bright white PDF as a dark-mode version with a black background so reading at night is far more comfortable on the eyes.
Save Printer Ink
Invert a mostly-white document to mostly-black, or use Invert + grayscale, when you want the opposite density for printing.
Photo Negatives
Create true photo-negative copies of documents and graphics where colors are intentionally flipped to their opposites.
Low-Light Documents
Lighten or darken a hard-to-read scan by recoloring it, then exporting a fresh, print-or-share ready PDF.
How to Use This Tool
- Upload a single PDF (up to 100 MB) by dragging and dropping or clicking the upload zone
- Review the page count and a before/after preview of page one next to the controls
- Pick an effect — Invert colors (photo-negative), Dark mode (natural colors on black), or Invert + grayscale
- Choose a resolution (110/150/200 DPI); higher means crisper text and a bigger file
- Set pages to All or a custom range such as 1-3,5, and adjust your selection if any page is out of range
- Click "Invert PDF", watch per-page progress, then download the result as a <base>-inverted.pdf, <base>-dark.pdf, or <base>-inverted-bw.pdf
Related Tools
Learn More
- ISO 32000-2 — PDF Specification ISO 32000-2, the official specification of PDF rendering and color spaces.