Grayscale Image
Convert an image to black and white. Runs entirely in your browser.
Click to upload or drag and drop
Select an image file
How the conversion works
The image is drawn onto a canvas at its full original size with the browser's 100% grayscale filter, then saved, so the result has exactly the same width and height as the original. Nothing is resampled or cropped; only the color is removed.
Output
PNG images stay PNG and keep their transparency; every other type is saved as a JPEG at 92% quality. The download is always named grayscale.png or grayscale.jpg, so rename it if you're converting several images. Files over 50 MB are rejected.
Getting a stronger black-and-white look
A straight grayscale conversion keeps the original tones, which can look flat. For more punch, convert first and then raise the contrast with Brightness & Contrast. The filter relies on your browser's canvas filter support, so use a current Chrome, Edge or Firefox if the download comes out in color.
Frequently asked questions
Can I undo the grayscale conversion afterward?
No — once converted, the original color information is gone from the downloaded file. Keep your original image if you might need the color version later.