Tumblr is a social media platform that combines the features of blogs, microblogs, and social networking. It allows users to express their individuality through customizable homepages and post various types of content without length limitations. Tumblr's branding focuses on the concepts of individuality, creativity, and convenience for users. To promote the platform, Tumblr operates official accounts on other major social networks to attract new users. The technology on Tumblr provides diverse posting functions and allows users to customize their homepages. This supports sharing content, communication with friends, and creating individual technology libraries on the platform.