Here are some best practices for optimizing image upload and storage in a web application while considering both performance and user experience:

- **Compress images:** Compress images to reduce their size without compromising their quality. This will make them load faster and use less storage space.

- **Use the right image format:** Use the right image format for the job. For example, JPEG is good for photos, while PNG is good for graphics with transparent backgrounds.

- **Limit the size of uploaded images:** Set a maximum size for uploaded images to prevent users from uploading large images that can slow down the application.

- **Use lazy loading:** Use lazy loading to only load images as they are needed, rather than loading all images at once. This will improve performance by reducing the amount of data that needs to be loaded.

- **Use a content delivery network (CDN):** Use a CDN to deliver images faster by caching them in multiple locations around the world.

- **Optimize storage:** Optimize storage by using a dedicated image storage service or by storing images in the cloud. This will reduce the load on your servers and improve performance.

- **Implement image resizing:** Implement image resizing to serve appropriately sized images based on the user's device and screen size. This will further reduce the size of images and improve performance.
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