Not signed / not notarized — right-click → Open on first launch. Verify: shasum -a 256 FlipStack-1.0.0.dmg
*** thank you — duplex done right ***
Print both sides. No fuss.
A tiny open-source macOS menu-bar app for printers that can't flip a page themselves. Drop a file, print the fronts, flip the stack once when asked, backs print. Half the paper, zero guesswork.
v1.0.0 · 1.5 MB · macOS 14+ · sha256 …
the panel in action — drop, preview, print, flip
What it does
Guided manual duplex— fronts, one flip (the diagram shows long/short edge), backs. Cancel/retry anywhere.
Live preview— fit-to-page sheet with a page slider; select exactly which pages print.
Honest printer status— power-probed online/offline plus real ink levels.
Open source— Swift + SwiftUI, 250 tests, CI on every push.
Why
It started with a gifted Epson L1800 — great printer, no auto-duplex.
Privacy: this page sets no cookies and loads no third-party scripts or trackers. The app sends documents only to your own printer — no accounts, no telemetry. 100% GDPR-safe.