#586 Block image based on "width and height" (possible with OS API)

[gungungun]

Hi Privoxy's developer,

I just come here to request a new feature for Privoxy, block image based on width and height, POSSIBLE for sure because I found that we can download just a few byte or kilobyte of a image and we can get that image width and height, and the size after get is real, not a virtual size at all, it is the true size that if we fully download that image, we get it too.

Here is my demo, I use GDI Library to get image width and height from this image: http://upload.wikimedia.org/wikipedia/commons/3/3f/Fronalpstock_big.jpg

Okay, and I ONLY download 154KB from that image, but its full size is 14MB: http://i.imgur.com/aPGfz41.png

And I can use Window Picture Viewer to view that image size, 10109x4542: http://i.imgur.com/0TONiBe.png

And now I use GDI Library to get image size, demo using Autohotkey because it is easy to write a demo like this: https://app.box.com/s/gtat69ntsdqksrcoy9sg

After click the getimagesize.exe here is what I get: http://i.imgur.com/k5LbyJA.png
TRUE image size. I also include source in that archive, hope you can add feature like this to Privoxy, because block banner using banner-by-size is not really effective, website developer always skip the step include width and height of the image for banner, block image by its width and height get from OS API is much reliable and effective.

Thank you!

[gungungun]

More info: http://prxbx.com/forums/showthread.php?tid=2188&pid=17876#pid17876