Flip every color in your PDF to its negative equivalent — perfect for dark mode reading, reducing eye strain, or printing on dark paper. Free, private, and fully browser-based.
Click to select a file or drag and drop
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Click the button below to invert all colors in your PDF.
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Drag and drop or click to upload your PDF file. Your document is loaded directly in your browser — nothing is sent to any server, guaranteeing complete privacy.
Click 'Invert Colors' and the tool instantly processes every page of your PDF, flipping each color to its exact negative value — turning white to black, dark text to light, and every shade in between.
Your color-inverted PDF is generated entirely in your browser and ready to download in seconds — free, private, and without any watermarks.
Fine-tune brightness, contrast, saturation and more in your PDF.
Change the background color of your PDF.
Convert all colors to black and white.
Make your PDF look like a scanned document.
Convert PDF to image-based PDF. Flatten layers and remove selectable text.
Inverting colors replaces every color in your PDF with its exact negative value on the color wheel. White becomes black, black becomes white, red becomes cyan, and so on. The result is a photographic-negative version of your document, often used for dark mode reading or creating high-contrast prints.
Absolutely. Inverting a PDF that has black text on a white background produces a white-text-on-black result — much easier on the eyes in low-light environments. It is a quick and effective way to make any document more comfortable to read at night.
The inversion process renders each page as a high-resolution image before rebuilding the PDF. This means the resulting document is image-based and text will not be selectable or searchable. For a text-preserving color change, consider using our Adjust Colors tool.
No limit at all. ZentoPDF processes every single page of your PDF, no matter how large, completely free of charge. Multi-page documents are fully supported — just upload and convert.