Changes

| 2007 – 2009|| Early years || "Tumblr was is founded by David Karp in 2007 as a method for people to post “tumblelogs” — essentially short-form blogs — featuring links, short paragraphs and a stream of consciousness style. It rapidly grew a wild and fractious user basegrows its userbase, split into dozens if not hundreds of communities united by niche interests."<ref name="8 Insane Moments on Tumblr That Will Go Down in History"/>

| 2009 – 2017 || Rise to popularity || Tumblr releases its first app “tumblrette” in 2009, with which app users have the freedom to post to their blog whenever they want. This is considered the start of tumblr becoming very popular.<ref name="a Breif History of tumblr"/> In 2012 Tumblr signs its first big ad deal with {{w|Adidas}}. With big companies wanting to be featured tumblr is able to bring in more money. This proves the extent of its popularity.<ref name="a Breif History of tumblr"/>

| 2012 2013–2017 || Acquisition by Yahoo || Tumblr signs its first big ad deal with is acquired by {{w|AdidasYahoo}}. Now Since then, the site would decline along with big companies wanting to be featured tumblr was able to bring in more money. This proved the extent rest of the popularity of tumblr"that corporate entity.<ref name="a Breif 8 Insane Moments on Tumblr That Will Go Down in History of tumblr"/>

| 2013–2017 2017 onwards || Acquisition || Tumblr is acquired by {{w|Yahoo}}. Since then, the site would decline along with the rest of that corporate entity.<ref name="8 Insane Moments on Tumblr That Will Go Down in History"/>|-| 2017 onwards|| Verizon || {{w|Verizon Communications}} acquires {{w|Yahoo}} and Tumblr becomes a part of the [[w:Verizon Media|Oath corporation]].<ref name="A Brief History Of Tumblr Photography">{{cite web |title=A Brief History Of Tumblr Photography |url=https://thehhub.com/2018/11/15/a-brief-history-of-tumblr-photography/ |website=thehhub.com |accessdate=25 November 2019}}</ref>