A white, lowercase <big><b>f</b></big> with a blue rectangle with slightly-rounded corners underneath (similar to the Facebook favicon)
<ul><li><b>Original: </b> Facebook, Inc.</li>
<li><b>Vectorization:</b> <a href="//commons.wikimedia.org/wiki/User:Tkgd2007" title="User:Tkgd2007">Tkgd2007</a></li></ul>
2008-04-09
This <i>W3C-unspecified</i> <a href="https://en.wikipedia.org/wiki/Vector_images" class="extiw" title="w:Vector images">vector image</a> was created with <a href="https://en.wikipedia.org/wiki/Adobe_Illustrator" class="extiw" title="w:Adobe Illustrator">Adobe Illustrator</a>.