Preview an image in grayscale

See any image in grayscale to judge its tonal contrast and how it reads without color. Everything is processed locally in your browser.

Privacy-first: every image is processed locally in your browser. Nothing is uploaded, stored or transmitted to any server.

The squint test, done properly

Strip the color from an image and only values remain — and values are what carry composition. Artists check work in grayscale to see whether the focal point still reads; if a painting turns to mud without its hues, the values were doing no work. The same check predicts how a design survives grayscale printing.

Also a rough accessibility signal

An interface or chart that becomes ambiguous in grayscale is relying on hue alone — a red flag for color-blind users and for print. Toggle between original and grayscale instantly, compare, and export the grayscale version if you need it. Rendered in your browser, like everything here.