4.jpg / 4.webp  - "A Wild Cherry (Prunus avium) in flower"
Image Author: Benjamin Gimmel
Photo licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license. 
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3.png / 3_webp_lossy.webp / 3_webp_lossless.webp / --  	"PNG transparency demonstration"
Image Author: POV-Ray source code
Photo licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
