SonuPDF

Replace/Invert Colors

Invert colors or replace specific colors for accessibility.

Drag & drop files here, or click to select

Color Operation

Common uses: Dark mode conversion, accessibility enhancement, brand color updates, or display customization for specific viewing needs.
Note: Color processing converts PDF pages to images. Text will remain visible but may not be selectable in the output.

How to Swap or Invert PDF Colors

1

Upload the document you wish to modify into the color panel.

2

Select either a complete color inversion or target specific tone values.

3

Specify the exact source hex codes and their desired replacements.

4

Apply your custom settings and save the updated file to your device.

Tailored Color Adjustment Utilities

contrast

High Contrast Reading

Convert documents to high-contrast layouts to make reading on screens comfortable for tired eyes.

palette

Specific Color Swapping

Pick precise hex codes to replace specific highlights or background blocks across every page.

text_fields

Text-Only Inversion

Invert text blocks to make dark print light while keeping images and illustrations in their original state.

security

In-Browser Processing

All tone modifications occur directly inside your browser cache, keeping your document content completely local.

Frequently Asked Questions about PDF Recoloring

Yes, by swapping the background and text tones or performing a full inversion, you can create a custom dark mode layout.

You can choose to keep illustrations untouched while only modifying the text and page canvas colors.

Yes, the structural text content is preserved, ensuring copy-paste actions and screen readers continue working as expected.

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