There’s a helpful video tutorial over at Don McAllister’s ScreenCastsOnline website that details some of the keyboard shortcuts that you can use in Open and Save As dialogs. The shortcuts are built into macOS, so there’s no need for extra software, but Don does go on to point out that there are many more helpful features in Default Folder X if you really want to supercharge your Open and Save As dialogs 🙂

You can see the entirety of keyboard shortcut segment without subscribing to SCO, but you’ll have to sign up for the 10-day free trial or buy a subscription to ScreenCastsOnline to watch it through to the end and see his discussion of Default Folder X. And if you go for the subscription or free trial, make sure to check out his full-length Default Folder X tutorial.