iOS: Earlier this year, a little trick was discovered on iOS where if you attempted to download a large movie, iOS would clear up junk storage for you to make space for it. This no longer works in iOS 10, but I noticed last night that a similar thing happens when you download a large app.
Tagged With storage space
By default, iMessage saves every single photo you're sent (you can change this, of course), which is super handy, but also eats up a ton of space. It's easy enough to pop in and delete those photos one-by-one, but 9to5 Mac points out a somewhat hidden trick to selecting multiple photos at once.
This month, Microsoft released its first major update to Windows 10. If you've already done this upgrade, be sure to run Disk Cleanup. It can save you upwards of 20GB of hard drive space.