Images

Maybe you have a paid for image software like Photoshop Elements. Ideal. But free options are available.

If you are updating or adding new images (and you don’t ever want to be loading raw images – keep it to 500Kb or less, max 1Mb) to your website there are a few options, some expensive. Free and easy to use is Squoosh.
More info here.

Another free and useful resource
https://www.iloveimg.com/