As you know Google counts your photos, gmail and drive storage as a single bucket now and it is sometimes hard to find where all the big files are. The place to find your current storage is this: https://drive.google.com/settings/storage
Here are some tips to find the big items from each individual service:
- Google drive - Visit http://drive.google.com/#quota and it will open all files in your drive nicely sorted in descending order of their size. Delete / Save off the top few items and you are done.
If you (like me) are logged in to multiple google accounts at the same time and it opens a different account when you visit that link, you can just click on the top right link on the page to switch the google account. You can also access that above link from Incognito browser and use the new credentials on that page.
Gmail - In the search bar type: "size:10MB" or "larger_than:10MB" It will find conversations which consume more than 10 MB.
There is an undocumented search operator to search for older email, you can try that to find emails larger than 10 MB and older than 1 year "larger_than:10MB older_than:1y"
Photos - If you upload photos at high quality (not original quality!), they are not counted against your quota. Google photos allows unlimited storage for high quality photos! I will update this post to find current photos which are counted against your storage quota.