What Grayscale Image does
Grayscale Image removes all colour, converting the photo to shades of grey using luminance weighting.
- Grayscale Image
How do I convert an image to grayscale?
Grayscale Image lets you convert an image to grayscale by uploading an image; the tool removes all colour, converting the photo to shades of grey using luminance weighting. Preview the result and download it. Everything runs in your browser, so your photo is never uploaded.
- The tool removes all colour, converting the photo to shades of grey using luminance weighting
- Instant live preview
- Download as JPG, PNG or WebP
- 100% client-side
What is
Grayscale Image
A tool that removes all colour, converting the photo to shades of grey using luminance weighting in the browser.
Image Tools
Related terms
grayscaleblack and white
Frequently Asked Questions
Yes, completely.
Grayscale Image is free with no signup, watermark or limits.
No unnecessary loss.
The effect is applied at full resolution and exported without extra recompression unless you choose a lossy format.
No.
The effect is applied locally with the Canvas API in your browser.
Detailed Explanation
How it works
Pixels are converted to grey using perceptual luminance weights on a canvas.
- Canvas pixel processing
Use cases
Create classic black-and-white looks, prepare images for print, or reduce visual distraction.
- Photo editing
Limitations
The effect is applied uniformly in the browser; results depend on the source image and cannot recover detail that is not present.
- Source-dependent
Privacy
The image is processed entirely in your browser with the Canvas API; nothing is uploaded to a server.
- 100% local
- No upload