What is Color image?
Full-color photos and graphics. Color carries mood, but it can also distract from shape, light and composition.
Convert images to black and white
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Drop your JPG, PNG, WebP, AVIF or HEIC files onto the page, or click to browse.
Click Convert — every image is desaturated in your browser; transparency in PNG files is preserved.
Download each grayscale PNG, or the whole batch as a ZIP — named with a -grayscale suffix.
No. Colors become shades of gray, but the alpha channel is kept — a transparent-background PNG stays transparent, which matters for logos and overlays.
No. The conversion runs entirely in your browser — your files never leave your device.
PNG stores the alpha channel losslessly, so transparency survives exactly. A JPEG output would have to flatten transparency onto a background color and re-encode lossily.
Yes. Drop multiple files and all are desaturated with the same conversion — processed all-or-nothing, so a failure never writes half a batch.
Single files up to 25 MB.
Here is what each format is for, and when converting images to grayscale is the right move.
What is Color image?
Full-color photos and graphics. Color carries mood, but it can also distract from shape, light and composition.
What is Grayscale image?
Shades of gray only. Desaturation keeps every pixel’s brightness and the alpha channel — it removes hue, not detail.
When you need it
Convert to grayscale for print preparation, accessible contrast checks, or a sober editorial look. Brightness is preserved per pixel, so nothing but the hue changes; if you also need to reshape the tonal range, a full photo editor is the right tool.