Cyanotype: Blueprint Photo Lab

Turn photos into classic blueprint-blue cyanotypes with real darkroom controls - all on-device, no uploads, no subscriptions, no ads.

Cyanotype turns any photo into a blueprint print — the deep prussian-blue, sun-printed look of the world's first photographic process. One aesthetic, done perfectly.

No subscription. No account. Works offline. Your photos never leave your device.

Most filter apps do a hundred looks badly. Cyanotype does one look properly: a real duotone darkroom pipeline that maps your photo's tones between deep prussian blue and warm paper white, with film grain, a hand-coated paper wash, and a subtle vignette — tuned so the very first import already looks like a print worth framing.

SIX HAND-TUNED LOOKS • Classic — the balanced, archetypal cyanotype • Deep Sea — dark, cool, and dramatic • Sun Print — airy, faded, sun-warmed paper • High Contrast — bold blacks-to-blue and bright paper • Faded Archive — soft, aged, found-in-a-drawer • Night Blue — moody, low-key midnight prints

Every preset is a live thumbnail of your actual photo, so you pick with your eyes, not by name.

MAKE IT YOURS • Tone — how deep the shadows sink into prussian blue • Grain — real film-style grain, matched between preview and export • Wash — how warm and sun-aged the paper highlights feel • Matte borders in three widths for a gallery-print finish • Press and hold to compare with your original at any time

BUILT LIKE A TOOL, NOT A TOY • Instant live preview; full-resolution processing happens only when you export • Saves finished prints to your photo library at full resolution • Share sheet support for sending prints anywhere • Your last look and settings are remembered between sessions • No permission wall to get started — the photo picker needs no library access

Pay once, keep it forever. If you love the blueprint look, this is the lab that respects it.