When creating content in Grav, you often need to display different types of media like images, videos, and various other files. These files are automatically found and processed by Grav and are made available to use by any page. This is particularly handy because you can then use the built-in functionality of the page to leverage thumbnails, access metadata and modify the media dynamically (e.g. resizing images, setting the display size for videos, etc.) as you need them.

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Grav uses a smart-caching system that automatically creates in-cache copies of the dynamically generated media when necessary. This way all subsequent requests can use the cached version instead of having to generate the media all over again.