Posted by Tim Roberts on 11/14/07 07:17

gonzoduke85@gmail.com wrote:
>
>I'm using a php script to generate a huge number of PNG image files.
>Some of the larger PNGs are not viewable in a web browser, though-they
>just show up as broken links. These ones are only viewable in
>Photoshop and usually need to be cut down to around 30,000px tall (I
>forget the exact number). Is this a limitation of the PNG format?
>What are the maximum dimensions of a PNG image?

How many web browsers have you tested, and on what platforms?

The PNG format uses a 32-bit field to store the width and height, so that's
not the problem. However, GDI in Windows uses signed 16-bit values in some
cases for physical coordinates, which limits you to 32,767.
--
Tim Roberts, timr@probo.com
Providenza & Boekelheide, Inc.

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