Dark Mode PDF
Invert PDF Colors for Comfortable Night-Time Reading
Drag and Drop PDF files here
Fast, 100% private in-browser processing. Your files never leave your device.
Convert bright white PDF pages to a high-contrast dark theme (dark background with light text) to reduce eye strain during nighttime reading.
How to use Dark Mode PDF
Upload PDF
Select the document or textbook.
Choose Theme
Select Dark Mode, Sepia, or High-Contrast Inversion.
Download Dark PDF
Save the eye-friendly document.
Key Features & Capabilities
Reduce Eye Strain
Perfect for late-night studying, coding documentation, and low-light environments.
Color-Preserving Inversion
Inverts background and text colors while preserving diagram visibility.
Frequently Asked Questions
Does dark mode permanently change the file?
You download a newly styled copy; your original file remains unchanged.
🔒 100% Client-Side Privacy Guarantee
OM PDF processes all documents entirely in your web browser memory using WebAssembly. Your files are never uploaded to any cloud server, preventing data leakage and guaranteeing total security for confidential documents.