This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionMediaViewer in the middle of loading an image.png
English: MediaViewer in the middle of loading an image. The image looks blurred - what you actually see is the small thumbnail from the article, enlarged to full-screen, with a blur filter applied to make it less ugly. This is replaced with the actual image once it is loaded.
There is a (hard to notice) progress bar at the bottom of the image.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.