metin-aksu/miviewer

miViewer is a small macOS app for looking at images one at a time, built to be fast and simple. When you open a single image, it automatically finds every other image in that same folder and lets you move between them using the keyboard or a small bar of on screen buttons at the bottom of the window. Navigation wraps around, so after reaching the last image in a folder it loops back to the first one, and the same happens going backward from the first image. Files are sorted in what the README calls natural order, meaning a file named img2 comes before img10 rather than being sorted as plain text. You can zoom in and out, jump straight to 100 percent (actual pixel size), or fit the image to the window, and when zoomed in you can pan around by scrolling. The app supports every image format that macOS itself recognizes, including JPEG, PNG, HEIC, GIF, TIFF, and WebP. It remembers your window size and full screen state between launches, and you can also open an image simply by dragging it onto the window. There is no sandboxing, which the README explains is what allows the app to read other images in the same folder without asking for extra permission each time. miViewer is built with SwiftUI and works as a universal binary, meaning it runs natively on both Apple Silicon and Intel Macs, and requires macOS 14 (Sonoma) or later. It can be installed through Homebrew with a custom tap, or downloaded directly as a DMG file from the releases page. The README notes the app is signed with a Developer ID but not yet notarized, so macOS may show a warning the first time you open it, which can be bypassed through the right click Open menu or the Privacy and Security settings. The documentation is also provided in Turkish alongside English.