Convert an image to grayscale
Convert any image to grayscale using true luminance, in one click.
Your files never leave your device
How to convert to grayscale
- 1
Upload the image
Color source.
- 2
Convert
True perceptual luminance, not a washed filter.
- 3
Download
The grayscale image.
Why use this tool
True luminance
Perceptual conversion: tones keep their visual weight.
Consistent style
Unify photos from different sources into one look.
Smaller files
Grays usually compress better than color.
Private
The image is processed in your browser: nothing is uploaded to any server.
Frequently asked questions
Grayscale or black & white?
Grayscale keeps all intermediate tones; pure black & white thresholds every pixel to black or white. We have both tools.
Can I recover the color later?
No: conversion discards color information. Keep your original.
Which formats are accepted?
JPG, PNG, WEBP, AVIF, BMP and GIF (first frame). The output keeps the original format when possible.
Is my image uploaded to a server?
No. All processing happens on your device using the browser itself; the image never leaves it.