Tumblr’s core layout, still in use today
Celebrating the 10 billionth post
Tumblr’s homepage has always been a minimal call to action
There are millions of these stickers in the world
Tumblr post forms featured on Portlandia
Tumblr mobile app featured on Apple.com
So simple even dogs can use it
Tumblr tote spotted in the wild
Jacob also lead Tumblr's internationalization effort, working with translators to launch localizations for dozens of languages.