Screen Loupe

Screen Loupe is a small native macOS application designed for designers and developers to magnify and inspect any part of the screen with a floating capture area mirrored live in a zoomable, pixel-perfect viewer. Features include real-time pixel-sharp zoom, panning, color metering, color vision simulations, rulers, snapshot saving, and a screenshot studio supporting various output formats and settings. It is built with Swift and uses native Apple frameworks, with no third-party dependencies, and supports macOS 15.2 or later.