Check your iPad/iPad Air for any latest update released by Apple. If your device is running on iOS5 or later you can easily do it by going to the settings> General> Software Update> Tap to install (if available).
Clear the cookies and history from your Safari browser. This will delete all your stored passwords and recent visits to websites. For clearing cookies, go to settings and tap on Safari> tap on clear cookies and data. Do the same for clearing the history by going to that same place and tapping on the ‘Clear History’.
If your device is running on iOS5 or later then you should be able to clear Safari stored data. Just simply go to Settings>Safari>Advanced>Website Data>Remove All Website Data.
The most obvious step would be turning on/off your device. Sometimes, temporary bugs might cause the Safari browser to perform poorly which might get fixed with a restart.
If you have enabled “Autofill” option in your Safari browser, then turn it off. If you don’t know how to do that, then go to Settings>Safari>Autofill>Clear All, make sure you turn off every other setting with Autofill.
Turn off iCloud Bookmark Syncing. You can do it by going to Settings>General>iCloud>Toggle Bookmark Syncing Off.
Settings>General>Reset>Erase all Content and Settings. You can get your files back from iCloud when you connect your device again to iCloud using your Apple ID. If the crash still continues on the iPad or iPhone it might be time to try an alternative safari broswer. Also watchout for fake safari popup scam messages.