Iconizer

Iconizer is a macOS utility that creates Xcode asset catalogs from single source images. Users drag an image onto the app, choose target platforms such as macOS, iPhone, iPad, CarPlay, or Apple Watch, and export. The tool automatically generates the required icon sizes, launch images for both landscape and portrait orientations, and image sets with 1×, 2×, and 3× scales, preserving aspect ratio and handling down‑scaling where needed.

The application supports generating launch images by selecting the desired device family and orientation, producing all necessary dimensions from a single high‑resolution source. For image sets, a 3× image can be provided and Iconizer will create the corresponding lower‑scale assets, naming the set as specified by the user.

Iconizer is distributed as a binary or source code, allowing developers to build or modify it themselves. It runs on macOS, is listed as stable, and includes recent updates for App Transport Security and compatibility with newer OS releases.