Open Settings
Tap Safari
Tap Clear History and Website Data
Confirm by tapping Clear History and Data
To clear app cache, delete and reinstall the app
Open Settings
Tap General
Tap iPad Storage
Select the app
Tap Delete App
Reinstall the app from the App Store
To clear system cache, restart the iPad
Press and hold the top button and either volume button
Slide to power off
Wait a few seconds
Turn the iPad back on
To free more space, remove unused apps
Open Settings
Tap General
Tap iPad Storage
Enable Offload Unused Apps
To clear browser data in other browsers, open the browser settings
Find privacy or history options
Clear browsing data and cache