d57a78616a
### What Clarifies that `sharp` must be specified in payload config for image resizing & cropping to work. Also adds link to the configuration page for further information. ### Why It is not immediately clear from this single documentation page alone. While it says that the feature relies on sharp, it does not say that it must be added to config. Most people won't probably run into this since they're probably going to use `create-payload-app`, which configures sharp by default. But those who use custom config (like me) may be left wondering why this feature does not work. See [Crop images and preview sizes not working](https://payloadcms.com/community-help/discord/crop-images-and-preview-sizes-not-working) in community help.