There are many Methods Available on Internet (i think you already know), BTW I am sharing 3 methods here. If you have any better method share we will add it here
Method 1:- MEGA Link Downloader
Introduction
MEGA Link Downloader is a tool to...
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...