A fast, focused image viewer for macOS. Browse entire folders, inspect RAW files, zoom into every detail and keep your workflow moving.
macOS 14 or later • Apple silicon + Intel • Universal 2
MPViewer gets out of your way. Open a folder and move from overview to pixel-level inspection in seconds—without importing a catalog or surrendering your files to a library.
Fullscreen viewing stays fast and fluid. Zoom with the keyboard or mouse wheel, pan by dragging, and use the movable navigator to keep your place at any magnification.
MPViewer shows an embedded preview immediately, then replaces it with a high-quality render in the background. You stay in motion while the full image catches up.
Read detailed EXIF data, inspect a live RGB histogram and reveal the fullscreen inspector simply by moving to the screen edge.
Browse the real file system with an expandable folder tree, favorites and recent locations. No import step. No hidden catalog.
Handle the everyday work without breaking your flow. Crop and straighten, rotate, rename a batch, export quickly, compare frames or send the selected image straight to your preferred editor.
Let MPViewer follow macOS automatically, or keep the browser in Light or Dark mode. Your choice is remembered, while fullscreen viewing stays dark so the photograph remains the focus.
For years, FastStone Image Viewer was the tool I reached for on Windows whenever I needed to move through a folder of photographs quickly.
After switching to macOS, I searched for something with the same immediacy: fast folder browsing, effortless fullscreen inspection, practical metadata and controls that stay out of the way. I couldn't find the replacement I wanted, so I started building it.
MPViewer is that project—a native Mac image viewer shaped by a real photographer's workflow, released as open source and built to keep getting better.
— Mladen Popović, creator of MPViewer
The essentials are one key away, whether you're reviewing hundreds of frames or checking one final export.
MPViewer is free to use forever and released under the MIT License. It contains no advertising, adware, spyware or user tracking—and no account is required. Explore the code, report an issue or help shape what comes next.
One Universal 2 download runs natively on Apple silicon and Intel Macs. Requires macOS 14 Sonoma or later.
This beta is ad-hoc signed, but it does not yet have an Apple Developer ID signature or Apple notarization. Gatekeeper may block the first launch.
MPViewer for macOS
Native for Apple silicon and Intel Macs. Requires macOS 14 or later.
