Via MacWorld:
Launch Safari on your iPhone, iPad, or iPod touch.
In the URL field, type about:blank and then tap Go to open that page
which will be completely blank.
Tap the Share button (the one at the bottom of the screen that looks like a rectangle with an arrow).
Tap Add To Home Screen to create a Home-screen bookmark for this blank page.
In the dialog that appears, give the icon a descriptive name. (I chose New Page for mine.)
The Home-screen bookmark is saved to your devices Home screen, where you can move it wherever you like. On my iPad and iPhone, Ive moved this bookmark to my first Home screen, relegating the actual Safari icon to a folder of rarely used stock apps, where it hangs out with Compass, Notes, and Stocks.
The New Page icon (lower-right) on my Home screen
Whenever you want to open Safari to view a new page, you simply tap this New Page icon on your Home screen. Safari opensinstantlyto a blank page, ready for you to type a URL or open a bookmark.
Another benefit of this tip is that if you were planning to keep currently open pages handy (meaning you were really going to open a new Safari page), you avoid not only having to wait for a page to reload, but also the extra steps of tapping Safaris multiple-pages button and then the New Page button. And it avoids the aforementioned annoyance of your Bookmarks list popping up on its own whenever you launch Safari after previously closing all Safari windows.
What if you want to open Safari to view a previously opened page? You can tap the Safari icon, as usual. Or if, like me, youve buried the browsers icon in a folder, you can simply access Safari from iOSs multi-tasking dock (by double-pressing the Home button). For me, this approach closely mirrors my actual Safari use anyway: Nine times out of ten, if I want to look at a page already open in Safari, I open Safari from the multi-tasking dock. I can continue to do that, but if I want to go directly to a new page, I use my New Page icon on the Home Screen.
The biggest drawback to this tip for some people is that the icon for this blank-page bookmark is, appropriately enough, blank. Unfortunately, theres no way to give it a better-looking icon, since URL-bookmark icons are adapted from each Websites favicon. An alternate approach would be to publish, somewhere on the Web, a blank Web page with a nice faviconsay, a Safari icon with a blank-page badge?and then create a Home-screen bookmark to that page. Of course, loading that page wouldnt be as fast as opening about:blank, but it would likely still be much faster than the current Safari behavior of reloading an older real Web page.