Recreate the deep Prussian blue of a 19th-century sun print. Tune exposure and contrast, pick the paper tone and add grain and brushed edges for an authentic hand-made feel.
Runs entirely in your browser. Nothing is uploaded to any server.
Capture the look of the photographic process invented in 1842 without chemicals or sunlight.
Leaves, flowers and silhouettes look stunning in deep Prussian blue.
Grain and brushed edges add the imperfections of a real print.
A real cyanotype is made by coating paper with iron salts and exposing it to ultraviolet light. Exposed areas turn deep Prussian blue, while shaded areas wash out to the color of the paper. This tool imitates that by mapping each pixel's brightness from deep blue in the shadows through a mid blue to the paper color in the highlights.
Exposure and contrast shift brightness before mapping, just as longer or shorter sun exposure would. Grain adds fine random variation, and edge darkening imitates the dark, uneven borders left by brushed-on emulsion. Paper tone changes the color of the highlights.
The iron-based pigment that gives cyanotypes their color.
Cream and aged papers give a warmer, antique feel.
Lower values give a softer, faded vintage print.
A cyan-blue photographic print made with iron compounds and sunlight, first described by Sir John Herschel in 1842. It is also the process behind architectural blueprints.
Strong shapes and silhouettes, such as leaves, flowers, buildings and backlit portraits, give the most authentic results.
Real cyanotypes often have dark, brushy edges where the emulsion extends past the image. Set edge darkening to zero for a clean print.
Yes. Lower the effect mix to blend the cyanotype tones with the original photo.
No. All processing is done in your browser.
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