Delete unused apps
Offload unused apps
Remove large photos and videos
Empty the Recently Deleted album
Delete old messages and attachments
Clear Safari history and website data
Remove downloaded files
Delete offline music, podcasts, and movies
Review and remove large app data
Turn on iCloud Photos
Optimize iPad storage for photos
Back up and delete local copies of files
Clear app caches where available
Remove old email attachments
Restart the iPad after cleanup