lways WordPress will automatically shrink large images so that they will fit into the space available. Unfortunately it’s not avery good at it.
Take this image from a PREPP63 blog post..
It’s a bit blurred isn’t it? Well that’s what WordPress sometimes does if you let it do the work for you.
Here’s the same image which I’ve shrunk myself using Photoshop. As you can see it’s much sharper.
The moral of the story – if you want to make the images you use in your blog post look their best, then resize them yourself using image editing software.