Your PhotoStructure library contains your image database, library settings, as well as preview images that make viewing your photos and videos instantaneous. If you've installed VLC or FFmpeg and your videos aren't already in web-browser-readable format, they will be transcoded and stored in your library as well.
The size of these previews and transcoded videos depends on your originals, but as a safe rule of thumb, assume you'll need roughly two gigabytes of disk space per thousand images in your library. As an example, if you have 250,000 images and videos, your library metadata and previews will consume about a half a terabyte. If your library is predominantly non MP4-formatted videos, this may be much larger.
If you choose to have PhotoStructure copy your original photos and videos into your library, you will need space for those files as well.
Can I open my library on other computers? #
Yes! PhotoStructure libraries are designed to be cross-platform, and can be copied or shared over a network filesystem with multiple computers, even running different operating systems.
If you copy or back up your PhotoStructure library, first shut down PhotoStructure to ensure your database is properly closed and backed up.
Note that libraries can only be opened by one computer at a time, however.
Where is my database, settings, and previews? #
These are stored in a hidden directory,
.photostructure. Navigate to your PhotoStructure library (say, your Pictures directory), and look for that directory. On macOS, hit command-shift-period to show hidden files within Finder. On Windows, click
Hidden Items within the Explorer window. On Ubuntu's gnome browser, click the menu button by the close button, and select
Show Hidden Files.
Moving or deleting any files here, other than your library settings, will most likely cause problems with your library.
See also #
Photo by Anna Hunko