Whether your Mac contains a mechanical hard drive or an SSD, everyone needs more space. We're all used to dumping Finder's trash frequently to reclaim drive space, but what some of you might not know is that when you delete pictures from iPhoto, they remain on your computer since iPhoto has its own trash. If you've never done this, you may have hundreds (or for that matter, thousands) of pictures or videos in iPhoto that are just clogging up your drive.
There are two ways to delete the iPhoto trash. One way is to just right click on the word Trash in iPhoto's menu bar, and select Empty Trash. The other, and possibly more telling way, is to single click on the word Trash in the menu bar. You'll be presented with all the unnecessary photos and videos along with the total number held in trash. On the top right is an Empty Trash button that will delete them completely. In both cases, you'll be presented with a warning message asking you if you really want to do this. Click OK, and you'll get back some space. If you've never done this, the amount reclaimed can be dramatic, but if you are in the habit of doing this, you won't get back all that much. I deleted 82 pictures, and my hard drive space increased from 97.23 GB to 97.26 GB. See how much you can get back.