Recently I went to do some editing on a clients site, we needed a photo from a past event, I tried to search for it but no luck… it seems the file was named this:

This file was also 4MB which in web speak is REALLY LARGE!
While WordPress can crop this it just uses up resources and space on our server. Uploading large images (right off your iPhone) can cause bulk and increase the maintenance time of your install.
So the Pro Tip is: Optimize an image BEFORE uploading to the website.
Give your image file a useful name so perhaps it can be searched for later 😉
That is all