In addition to the below policies, when using our services, your application and its users must comply with the policies set out in the User Content and Conduct Policy.
Solve problems for people
Google Photos is for storing, enjoying and sharing personal memories. You must not use Google Photos APIs to store or serve media such as photos or videos that aren't of a personal nature. For storing internal enterprise data or hosting website media, consider using Google Cloud Storage instead.
Innovate, don't duplicate
Don't make a substitute for Google Photos or use this API to create, train, or improve (directly or indirectly) a similar or competing product or service. For instance, if your app's primary aim is to provide a general purpose photo gallery app, it's a substitute for Google Photos.
Respect usage limits
Usage limits help keep our service fair for everyone. Design your application to respect the per-user and per-app API request limits. If you think you are likely to exceed the published usage limits, your application may qualify for the Google Photos partner program.
Keep your user in the driver's seat
Don't process, copy or permanently store user media on your own servers. In general, media should only be presented in your UI and downloaded by the end user's device. Bulk processing of media is not permitted.
Always ask permission
We require you to let our users know what data you're requesting and why. Don't permanently cache, copy, analyze, or perform any action involving user data unless expressly permitted by the content owner (like when a user picks a specific photo to copy into a blog post). Use of Google Photos APIs are also governed by the Google API Services: User Data Policy, so please read this document closely before requesting user data.
Keep data fresh
If you need to store media for performance reasons, including thumbnails, you may only do this temporarily and not for longer than 60 minutes. If your use case requires access to data for more than 60 minutes, you may store the ID (either the media item ID or album ID) and use the ID to make a subsequent API request.
Respect Google's copyrights and attribute
Printing services require a commercial license
If your product transfers a user's photos onto physical goods (such as photo prints or t-shirts) and you charge money for this service, you must have a Commercial license. For more information, see the Google Photos partner program.