Tutorial

How to invert colors on a PDF for dark mode reading

By PDFjin Content Team • Jul 27, 2026 • 6 min read

Immediate Solutions for Dark Mode PDF Reading

Reading PDFs in dark mode significantly reduces eye strain, especially in low-light environments. The most effective ways to invert PDF colors are typically through your PDF viewer's native settings or your operating system's accessibility features. These methods usually invert the display colors without altering the original PDF file itself.

PDF Viewer Native Dark Mode Features

Many modern PDF readers include built-in features to invert colors or apply a dark theme. This is often the quickest and most convenient approach, as it's specifically designed for document viewing.

Adobe Acrobat Reader

Open your PDF document in Adobe Acrobat Reader.
Go to Edit > Preferences (Windows) or Acrobat Reader > Preferences (Mac).
In the Categories list, select Accessibility.
Check the box for Replace Document Colors.
Select Use High-Contrast Colors and choose a color combination like "White text on black" or "Green text on black."
Alternatively, set a custom background and text color to achieve your desired dark mode.
Click OK to apply the changes.

Foxit Reader

Open your PDF in Foxit Reader.
Navigate to File > Preferences.
Select Accessibility from the left pane.
Check Change Document Colors.
For "Custom Color," set "Page Background" to black and "Document Text" to white.
Click OK. Foxit also offers a "View Mode" option in its toolbar for quick theme switching.

Mac Preview

Preview does not have a native color inversion feature for the document content itself.
For system-wide inversion on Mac, refer to the Operating System Level Inversion section below.

Operating System Level Inversion

If your PDF viewer lacks robust dark mode options, your operating system's accessibility settings can globally invert display colors. This affects all applications, not just your PDF viewer.

Windows High Contrast Mode

Press Shift + Alt + Print Screen to quickly toggle High Contrast mode on or off.
Alternatively, go to Settings > Accessibility > Contrast themes.
Choose a contrast theme like "Aquatic" or "Night Sky" which often feature dark backgrounds and light text.
Click Apply. Remember to disable it when you are done reading your PDF, as it impacts the entire system interface.

macOS Invert Colors Smart Invert Classic Invert

Go to System Settings > Accessibility > Display.
Under the "Color filters" section, locate "Invert Colors."
Choose between Smart Invert (inverts most colors except images and media) or Classic Invert (inverts all colors, including images).
Enable the desired option. This will invert colors across your entire macOS interface.

Advanced Scenarios and Permanent Inversion

Sometimes, simple viewer or OS-level inversion isn't sufficient, especially with complex PDFs containing images, embedded multimedia, or scanned documents. In these cases, you might need a more robust solution.

Image Based PDFs and OCR

Scanned PDFs are often just images of text. Viewer-based dark modes struggle to invert these effectively, as they are pixel-based images rather than editable text. The "text" in such PDFs is part of an image, not rendered characters. For better dark mode compatibility with scanned documents, consider using an OCR PDF tool to convert the image text into selectable, searchable text, which viewers can then more easily invert.

Converting to Editable Formats

If permanent color inversion or extensive editing is required (e.g., for presentation or print), converting the PDF to an editable format like Microsoft Word might be necessary. Once in an editable format, you can manually adjust text and background colors before saving or converting back to a PDF.

Here's a quick comparison of the main inversion methods:

Method	Pros	Cons	Best For
PDF Viewer Settings	Document-specific; preserves original file; easy toggle.	Varies by viewer; may not affect all elements (e.g., images).	General reading, quick adjustments.
Operating System	Works across all apps; good for apps without native dark mode.	Affects entire screen; can distort images/videos.	System-wide consistency, temporary use.
OCR Conversion	Improves dark mode for image-based PDFs; makes text selectable.	Requires a separate tool; can be time-consuming for large files.	Scanned documents, non-selectable text.

Best Practices for Eye Comfort

Beyond color inversion, maintaining a comfortable reading environment is key. Ensure proper screen brightness, take regular breaks, and adjust your display's blue light filter (e.g., Night Shift on macOS, Night Light on Windows) to further reduce eye strain during extended reading sessions.

For quick online PDF manipulations, whether it's managing document accessibility or tackling other common tasks, PDFjin offers a suite of intuitive tools to streamline your workflow.