Photos spec for website – to many images into large of a size slow the load time of your website.
An image that is meant to be full width of a website – like for sliders – need only be max 1800 – 2000 pixels – and 72 kb – 100 kb
Images – if you are sharing a new pic on a blog post – or images that are half screen width – 800 – 1200 pixels and 72 KB
Naming Photos – its import to name the pic file name with a description – as well as use the alt text for a description – these can be the same. This is what the search engine read when they see an image. So change the file name before you upload to the website and add the alt text when you upload it.