Gmail on the web now has a handy new feature that shows you how much storage you're using in your Google account.
When you click your profile picture in the top corner, you'll see a new button at the bottom of the account switcher, displaying your storage usage.
Clicking on this button takes you to a page where you can see a detailed breakdown of your storage usage.
This new storage indicator is also being rolled out to other Google apps like Google Docs, Sheets, and Slides, making it easier to keep track of your storage across different services.