💡100% Client-Side · Zero Server Uploads
Slide Ink Saver
Convert dark or black lecture slides to clean white backgrounds and black text to save printer ink.
or drag & drop your files directly here
Files are processed locally in your browser and never uploaded to any server.
How to use Slide Ink Saver
Follow these simple steps to process your files in seconds.
Upload dark lecture slides
Select the presentation PDF with black, dark blue, or colored slide backgrounds.
Choose inversion mode
Select Smart Invert (preserves colored diagrams & turns background white) or High Contrast B&W.
Download & print cheaply
Click "Invert & Save Ink" to download an ink-friendly PDF that saves up to 80% printer toner.
Frequently Asked Questions
How much printer ink does this save?
Printing white backgrounds instead of solid black or dark blue saves between 70% and 85% of printer toner/ink cartridge consumption.
Does Smart Invert ruin colored diagrams and charts?
No! Smart Invert specifically targets dark backgrounds and light text, leaving colorful chart bars, lines, and figures legible.