google-photos
Google says:
Photos bigger than 2048×2048 pixels use your storage. Everything
smaller than that is free.
I have 6GB's of photos stored in original size (larger than 2048×2048 pixels), which I now want to reduce to the 'high quality' (2048×2048) size, which Google stores for free.
Is it possible to find and reduce the size of these photos (or delete them)?
Yes, Google Photos can access photos saved in Google Drive. The Google Drive search view in Google Photos displays photos by date, not by the Google Drive folder structure.
From How Google Drive works with Google Photos - Photos Help
View your Google Drive photos & videos in Google Photos
In Google Photos, you can do things like create collages and GIFs, edit your photos, make movies, and share with people you care about.
You'll see your Google Drive photos and videos in the "Photos" section of the Google Photos app, but you can also see just your Google Drive photos & videos using the Google Photos app.
...
Computer
- Go to photos.google.com/search.
- At the bottom right, click Google Drive.
Note: If you edit a photo in Google Photos, those edits don't show in the Drive version of the photo. To have the edited photo appear in your Drive folder, download the edited photo in Google Photos and upload it to your Drive folder.
TL;DR:
Just go to this link, you can see that it summarizes all the information that you want to see as long as it is related to your account storage.
Explanation:
Google has a habit of combining all of our account in different services that they offer and because of that most of the time we are confuse. So here's the explanation regarding this link
General View:
If you hover your mouse at the graph you can see specifically the total free and consumed space in your storage.
Since I am using the High quality (free unlimited storage) settings in my photos and videos I can safely assume that there are 0.06 GB storage that consumes my storage.
Because of that we can assume that:
Best Answer
This is now an option in the settings.
https://photos.google.com/settings → Recover storage.