I am wondering if anyone is aware of any Mozilla Firefox extension that is able to filter out images based on image size?

Would be nice to filter out <img src="..." width="1" height="1" /> to get rid of web beacons.

I think you might be able to do that with ImgLikeOpera. One of its features lets you block or allow images by filters you set. Never tried it myself, though I may try something along that line - so many pages are too image-heavy, very slow on dialup. On a lot of pages I'd like to block all images.

NoScript has an option to block Web bugs on untrusted sites, doesn't seem to have a way to extend that to all sites. The developer might be willing to help with that.

Oh yeah, I have NoScript.

Just enabled "forbid web bugs", thanks. :)

I wonder if there is any plugin that blocks standard web banner sizes... would be cool too.

AdblockPlus blocks a lot of banner ads.

AdblockPlus blocks a lot of banner ads.

Yeah, I do have Adblock Plus installed.

Unfortunately, I sometimes get false-positives.

Thought blocking the standard sizes would be a pretty good way...

What filter lists are you using?

What filter lists are you using?

EasyList (USA).

Too bad Adblock (Not Plus) isn't compatible with Firefox 3 yet. :(

I had a custom filter list that I made myself, that I liked, it worked pretty good for me.

I use AdblockPlus and Element Hiding Helper, along with ricks Easylist, EasyElement and Tracking Filter.