Slideshower for macOS

Slideshower lets macOS users create full‑screen photo slideshows that can be randomized, shuffled, and displayed in several layout options such as single‑photo, side‑by‑side, 2×2, or 3×3 grids. It supports mixing still images with video files (MP4, M4V, MOV), allowing videos to play fully or be muted while background music continues. Users can add multiple audio tracks with volume and looping controls, and overlay logos or custom text with adjustable position and opacity.

The app monitors a designated folder in real time, automatically adding new files to the slideshow, and provides navigation controls for pausing or stepping forward and backward. Transitions include cross‑fade and Ken Burns effects, and the entire presentation can be exported as a video file with a few clicks. Configurations can be saved as .slideshow files for later reuse.

A free version is available for up to 150 photos per slideshow, while a one‑time license removes that limit and grants access to future updates. The software is positioned as a lightweight, easy‑to‑use solution for personal or event‑display photo presentations on macOS.