Grayscale image
Turn a color picture into a grayscale PNG while keeping its dimensions and alpha transparency.
Choose a file to get started.
Converting your file
Working on your device…
What this tool does
Turn a color picture into a grayscale PNG while keeping its dimensions and alpha transparency.
Select a supported file or paste text.
Use the options shown in the workspace.
Download the result and review it on your device.
When to use grayscale image
Create a monochrome illustration from a color image.
How to use grayscale image
- Choose the supported image or images.
- Review the grayscale image options shown above.
- Run the tool, download the new copy, and inspect the result.
Frequently asked questions
Is this a pure black-and-white threshold effect?
No. It produces shades of gray based on the source color values, rather than only solid black and white.
Are transparent pixels kept?
The grayscale operation changes color channels while retaining the pixel alpha values.
Can I restore the colors from the downloaded copy?
No. Keep the original color image when you may need those colors later.
Does the tool resize the picture?
No. It exports a PNG using the decoded source width and height, subject to local safety limits.