Tumblr and certain graphics, logos, badges, designs, page headers, button icons and scripts are trademarks, service marks and trade dress of Tumblr, Inc. (“Tumblr”, “we” or “us”) in the United States and other countries, (the “Tumblr Marks”). We support and encourage ideas, services, tools and other creative works that use and supplement the Tumblr services but we’re required to protect our reputation and brand identity and ask you to follow these guidelines.
If you don’t agree to follow these guidelines, you don’t have a right to, and shouldn’t, use the Tumblr Marks. To help us address future branding concerns, we may modify these guidelines from time to time without notice to you. You’re responsible for following any modified terms, so you should review these guidelines and become familiar with any modifications we make.
Why does Tumblr have to protect its Marks? Trademark law in the U.S. and other jurisdictions requires mark-holders to protect against improper or confusingly similar use of their marks, so that end users aren’t misled about the origin and endorsement of products and services. In some cases, mark-holders can lose their trademarks if they don't protect them.
When you use the Tumblr Marks, you should make sure your use is consistent with how Tumblr uses the Tumblr Marks in similar media. We might provide you with guidelines on size, typeface, colors and other graphic characteristics of the Tumblr Marks, and those should be considered part of these guidelines.
You shouldn’t use the Tumblr Marks on any merchandise without our permission. If you have great ideas for Tumblr merchandise, send us an e-mail to firstname.lastname@example.org.
Use of the Tumblr API
If you use our API in your application or service, we ask that you follow these guidelines and, if your application or service displays any Tumblr Marks associated with Tumblr features made available through the API, somewhere include the statement:
“This [application/service] uses the Tumblr application programming interface but is not endorsed or certified by Tumblr, Inc. All of the Tumblr logos and trademarks displayed on this [application/service] are the property of Tumblr, Inc.”
If you don’t follow these guidelines, Tumblr reserves the right to revoke your access to our API.