One of my favorites is macOSicons.com, which lists over 25,000 alternative icons, meaning you should be able to find multiple options for popular apps with ease. macOS allows you to change an app's ...

Most don’t, so you’ll have to find custom icon files online, put them all in a folder, and then individually change the app icons. You’ll need to find the shortcuts for every app that’s ...

If you want to look through an SD card of pictures, however, you'll want big icons to see what each picture looks like. In either case, you'll probably want to change the size of your icons ...

You can set a dark or any icon of your choice – but the images have to me in the .ico format. Read: How to change File and Folder Icons. As an example, let us change the icon to a dark one.