Transform your PDF documents with custom background colors instantly. Perfect for creating PDF dark mode reading, improving accessibility, brand consistency, and visual customization. All processing happens securely in your browser with complete privacy.
Click to upload or drag and drop your PDF file here
For your privacy, all processing happens directly in your browser. This means:
Click "Select PDF" or drag and drop your PDF file. Your document is processed locally and never leaves your computer.
Use the color picker or select from popular presets. See a live preview of how your PDF will look with the new background.
Click "Apply Background Color" and wait a few moments. Your PDF with the custom background will be ready for download.
All PDF background color processing happens securely in your browser. Your files are never uploaded to servers, ensuring your documents remain completely private and secure on your device.
Create dark background PDFs perfect for comfortable night reading, reduced eye strain, and improved focus in low light conditions. Transform any PDF into dark mode for better readability.
Improve PDF accessibility and readability with custom high contrast background colors. Perfect for users with visual impairments, dyslexia, or reading difficulties who need enhanced color contrast for comfortable reading.
Match your company's brand colors precisely using custom hex codes. Create professional PDF documents that align with your organization's visual identity and corporate branding guidelines.
Experience instant PDF background color changes with our free online tool. No file size limits, no registration required, and completely free forever with browser-based processing.
Preview exactly how your PDF will look with the new background color before applying changes. Test different color combinations and ensure perfect results every time with our live preview feature.