Black & White / Grayscale Converter
Convert a photo or an entire PDF to grayscale — free, works in your browser.
In PDF mode, this tool stays free by showing a short ad for larger files: 20 pages or fewer is free, 21-50 pages = 1 ad, 51-100 pages = 2 ads, 100+ pages = 3 ads. Image mode is always free.
How it works
Every pixel's color is converted to its brightness value, producing a true grayscale result — useful for printing costs, scanned documents, or a cleaner look.
Is my file uploaded anywhere?
No — everything happens locally in your browser. Your file never leaves your device.