ProSieben started out as Pro7 on 1 January 1989. However during specific theme days, this logo was reused as an on-screen logo on June 2, June 9, October 6 and October 24, 2016.
On October 24, 1994, Pro7 was rebranded as ProSieben and introduced a new look by adopting a new logo. With this new look, the new logo had the name "Pro Sieben" written underneath it in a style similar to the example above. Nowadays, the symbol alone works as the full logo.
In 1997, ProSieben changed its logo again, and the "ProSieben" were renewed thus it made the black rectangle was eliminated from the wordmark, so the word "Pro" could be able to be beside with the word "Sieben".
In 2001, the "ProSieben" wordmark was removed from the logo, thus the logo will now remain only with the symbol.
In 2004, they started putting their logo inside a dark-blue square.
In 2007, ProSieben redesigned its 2004 logo and the square became circled, with the symbol tuning down its pure-red colour.
In 2009, the circled square became gradient and changed its color to "Cosmo Black" and gets placed in the center for the middle of a silver squircle, thus the symbol grows much bitter bigger than the previous logo and made the channel become relaunched with more new looks and new graphics.