So if you want to stop using Google Photos and move them to another service, you need to download them first. Also, if you have been using Google Photos for a while, I can guarantee you will already be significantly over 15Gb (even if pre-2021 files don’t count to the quota). With most modern smartphones 128GB+ and the camera the most popular feature, you will max out on 15Gb fast.
What I can tell you, is 15GB is not enough. I am guessing if you’re reading this you don’t want to pay or want to avoid paying for a Google One subscription to store Google Photos. After which, if you go over 15GB you will need a Google One subscription. The Google Photos storage limit will come into effect on June 2021.
The new Google Photos limit will be 15GB which Google claims is equivalent to 15GB. On November 11, 2020, Google announced plans to end free unlimited photo storage on Google Photos.
If you find this helpful and want to say thanks, please buy me a coffee or buy my book on Amazon (it’s not about technology!). Important I am not affiliated with Google or any of the companies mention and this is my personal experience.