It's so easy. Just open this link
Hidden content
Then Under “Recover storage,” click Convert existing photos & videos to Storage saver.
It might take a while for the job to finish so just be patient.
PRO TIP:
Do this trick regularly...
A Comprehensive and Practical Hands-On Guide to Learning Python for Beginners, Aspiring Developers, Self-Learners, etc.
This course includes:
9.5 hours on-demand video
4 downloadable resources
Access on mobile and TV
Full lifetime access...