Free Grayscale Converter
Convert any colored image into a classic black and white photo instantly. No registration, runs 100% locally in your browser.
Drag and drop your file here
Or click to browse from your device
Max file size: 10MBTake screenshots and annotate directly in your browser
Why use manual online uploaders? With the free Supashot Chrome Extension, capture any visible page, selected region, crop, highlight, blur, and copy instantly without leaving your tab.
How Grayscale Converter Works
Select or drop your image into the tool.
The grayscale conversion is applied instantly to the preview canvas.
Save and download your finished black & white photo.
Frequently Asked Questions
The conversion is done on a copy of the pixel grid in your browser memory, leaving your original computer files untouched.
Yes, we render the black and white values at full resolution matching your source file exactly.
Yes, any transparent alpha channels in your original image are fully preserved in the black and white output.