Posterino
Posterino is a macOS photo collage and poster maker for creating layouts, cards, calendars, and large-format image compositions from your pictures.
What is Posterino?
Posterino is a native Mac photo collage and poster design app for turning collections of pictures into posters, postcards, greeting cards, calendars, and contact-sheet style layouts. It is designed for people who want polished print or export results without building every layout from scratch. The app includes automatic and manual layout tools, built-in image browsing, flexible paper sizes, and fine-grained controls for arranging photos and text. It supports small card formats as well as large poster-sized documents, making it useful for personal photo projects, classroom displays, event boards, and creative print work. Posterino runs on macOS and is published by Christoph Priebe through Zykloid Software.
Key features
- Create photo collages, posters, postcards, greeting cards, and calendars.
- Switch between automatic, semi-automatic, and manual layout modes.
- Use built-in layout styles such as grid, square-grid, tile, circular, and random.
- Browse images inside the app and add large numbers of photos to one document.
- Adjust paper sizes, templates, text, and image placement for custom designs.
- Export finished work as JPG, TIFF, or PNG.
- Shuffle layouts and refine individual properties with detailed inspector controls.
Review app leftovers with diCleaner
Inspect caches, support files, containers, and login items before cleaning.
Safety overview
Status: Safe
Posterino is a legitimate creative Mac app for working with your photo library and image files. Access to pictures, save locations, and standard sharing features is normal for its purpose. As with any design app, review what you export or share and store original photos where you already keep backups if the project matters to you.
Recommendation: Keep Posterino if you use it for photo collages, posters, cards, or calendar-style layouts on your Mac. If you no longer use it, removing the app is usually fine, but you may also want to keep any saved projects or exported images you still need.
Common paths
/Applications/Posterino.app
Cache paths
~/Library/Caches/com.zykloid.Posterino3
Support paths
~/Library/Application Support/Posterino
Preference paths
~/Library/Preferences/com.zykloid.Posterino3.plist
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