Safari for iOS 7 allows you to keep up to two-dozen or more tabs open at the same time. That's fantastic... until you want to close them all and quickly. Then you're either touching-and-flinging cards (iPhone and iPod touch) or tapping little X icons, over and over and over again. Luckily, there's a great work-around that lets you close all the tabs you have, all at once. Here's how!
That's all there is to it. All open Safari tabs will be closed instantly. If you'd like to turn off Private Browsing, just tap on the Private button one more time. You can of course still clear selective ones out by just swiping if you'd like. This is just a handy way to get rid of all tabs if you've got lots of them open.