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Original file (3,072 × 3,445 pixels, file size: 10 MB, MIME type: image/png) This is a file from the Wikimedia Commons . Information from its description page there is shown below.
The Graphics Interchange Format (GIF; / ɡ ɪ f / GHIF or / dʒ ɪ f / JIF, see § Pronunciation) is a bitmap image format that was developed by a team at the online services provider CompuServe led by American computer scientist Steve Wilhite and released on June 15, 1987.
The spinning dancer is a kinetic, bistable optical illusion resembling a rotating female dancer. The Spinning Dancer, also known as the Silhouette Illusion, is a kinetic, bistable, animated optical illusion originally distributed as a GIF animation showing a silhouette of a pirouetting female dancer.
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The only requirement was that this image was invisible, either by being the same color as the page, or by being transparent. Spacer GIFs themselves were small transparent image files. GIF files were used as it was a common format that supported transparency, unlike JPEG. These files were commonly named spacer.gif, transparent.gif or 1x1.gif.
Comment The images which explain this illusion are uploaded and linked on the image page.Image:Right spinning dancer.gif and Image:Left spinning dancer.gif--Muhammad (talk) 15:15, 14 February 2008 (UTC) Support Well executed illusion, fascinating when it works. vlad§inger tlk 03:22, 15 February 2008 (UTC)
For example, an image may be split in half, with the top half being enlarged and placed further away from the perceiver in space. This image will be perceived as one complete image from only a single viewpoint in space, rather than the reality of two separate halves of an object, creating an optical illusion. Street artists often use tricks of ...
Image makers on Picrew are 600 by 600 pixels with the square 1:1 aspect ratio. Since October 31 2023, image makers are now also available in Tatanaga size, [7] which refers to the aspect ratio of 9:16 for a canvas size of 540 by 960 pixels. Each image maker may have up to 50 layers and parts, and up to 750 items in total.