GNU/Linux Simple

By Sujeewa Sandeepa Kularathna (based on Aurelio Heckert's Bold GNU Head)
CC BY-SA 4.0

3840x2160:  PNG 176kB

Free As In Freedom

By Caleb Herbert
Public domain CC Zero 1.0

1024x768:  PNG 30kB,  XCF 86kB

Baby Gnu and Baby Tux with the GNU Project definition

By Alex M. James
(based on Nicolas Rougier's black wallpaper)
GNU GPL v2 or later

2120x1280:  PNG 1.1MB

Free as in Freedom

By Cortman
Public domain CC Zero 1.0

1920x1080:  PNG 64kB

The Free Software Song

Copyright © 2012 Harrypopof
Free Art License

White font

800x600:  PNG 98kB
1024x768:  PNG 141kB
1280x960:  PNG 160kB

Black font

800x600:  PNG 99kB
1024x768:  PNG 143kB
1280x960:  PNG 161kB

Time For Freedom

Copyright © 2011 Sueroski
FDL v1.3 or later

1600x1200:  PNG 2.6MB

GNU/Linux — Grab Your Freedom Today!

Copyright © 2008 Shree Kant Bohra
GPL v2 or later, or FDL v1.2 or later

900x900:  JPEG 74kB

GNU Born Free Runs Free

Copyright © 2007 Alicia Lapekas
CC BY-SA 3.0

1280x800:  PNG 158kB

Alternative GNU Logo

Copyright © 2007 Kyle Winkler
Free Art License

1280x800:  PNG 93kB

Think Freely
(a travesty on the “Think different” advertising slogan)

Copyright © 2007 Joakim Olsson
(based on a public domain photo of Einstein, and Aurélio A. Heckert's Bold GNU Head)
GPL v2 or later, or FDL v1.2 or later

1280x1024:  PNG 450kB

GNU powered

Copyright © 2006 “Requiem”
(based on the GNU Alternative)
FDL v1.2 or later, or CC BY-SA 3.0

1024x768:  PNG 844kB

The way of the General Public License

Copyright © 2006 “Requiem”
(based on the GNU Alternative)
FDL v1.2 or later, or CC BY-SA 3.0

1024x768:  PNG 487kB

Gnu and Tux, black

By Rui Damas
GPL v2 or later

1600x1200:  PNG 402kB

Gnu and Tux, white

By Rui Damas
GPL v2 or later

1600x1200:  PNG 553kB

Gnu and Tux, color

By Rui Damas
GPL v2 or later

1600x1200:  PNG 667kB

I Run GNU

Copyright © 2006 GNULancer
FDL v1.2 or later

1280x1024:  PNG 292kB, XCF 852kB

Free Thought, Free World

Copyright © 2005 Dustin Jorge
(based on Etienne Suvasa's GNU Head)
GPL v2 or later

1024x768:  PNG 300kB

Baby Gnu and Baby Tux on white

By Nicolas Rougier
GPL v2 or later

1280x1024:  JPEG 93kB

Baby Gnu and Baby Tux on black

By Nicolas Rougier
GPL v2 or later

1280x1024:  JPEG 94kB

Flute-playing Gnu — Free Software

By Gonzalo Pineda
(based on the Nevrax Team's Flute-playing Gnu poster)
GPL v3 or later, or FDL v1.1 or later

3000x2248: 
JPEG 491kB,  PNG 1.4MB,  XCF (gzipped) 2.1MB