Is it possible to make a .png (or other) image that does NOT have rectangular dimensions?

Question

This might be a dumb question, but is it possible to make a .png file that isn't square?

If so, how can one do this in Gimp?

Ideally I'd like one in the shape of an X.

Solution

All image formats (even vector) must maintain a rectangular border specifying the size of the image. However, one can use the transparent properties of PNG images to simulate the appearance of a non-square image.

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Just create your image/shape, ensure the background is transparent, and save the file in the PNG format. Make sure you include the alpha channel so there is a transparent background saved with the image.

Comments

[slhck]

You mean, "isn't a rectangle"? ;) Nope, not possible.

[Jon Purdy]

Interesting question. The vast majority of today's display devices are rectangular (a notable exception being the Motorola Aura) so I doubt non-rectangular images would be particularly useful.

[demongolem]

I love this question, nice thought. Why should images be rectangular? Because someone told you that they have to be rectangular?

[Shirish Herwade]

i wanted an image with bottle shape, searching for 2 days now, if anyone have idea please reply