Fire In Motion

Htmlsnapshot can convert html with SVG to image as well. To do this, you need to install the free SVG plugin from Adobe.
http://www.adobe.com/svg/viewer/install/main.html

Excellent explanations:
http://blogs.msdn.com/ericlippert/archive/2004/06/01/145686.aspx

Htmlsnapshot supports converting html to gif. And it supports creating transparent GIF as well.
The SetGIFOption can be used to enable or disable transparent Gif

htmlsnapshot generates the image at the screen DPI by default. To get a higher resolution image, there are two methods.
1. Use setzoom and setDPI method.  The following code zooms the image 3 times and set DPI as 300, 300

VML is a kind of vector based graphic format.
html snapshot can convert VML to image like jpg, tiff etc. 
In Win2003, there is an “IE enhanced security” component which may restrict some behaviour of rending vml to image.  

Want to send an image from php to browser?  You can use code like this
< ?php
header('Content-type: image/jpg');
readfile('your.jpg');
?>