> For the complete documentation index, see [llms.txt](https://photopicker.gitbook.io/v3/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://photopicker.gitbook.io/v3/custom_catalogs/general.md).

# General Overview

Custom catalogs allow you to start sorting photos immediately after a shoot, even while on your way home. You can connect a card reader (e.g., via the Apple USB-C Digital AV Multiport Adapter or a card reader with a USB-C port), import your photos, and begin sorting them.

During the sorting process, you can assign flags, ratings, and color tags to your photos. Once you’re done, you can export the sorting results as XMP files directly into the folder containing the original photos in just a few seconds.

When you return home, simply import the photos into your photo editor (e.g., Lightroom, Capture One, or Camera Raw) as usual. The sorting results will automatically be read from the XMP files, allowing you to seamlessly continue working on your photos.


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