-David

Apart from those two, you could also try Image::ExifTool or (much too heave for just getting the size) Image::Magick

Image::Magick can be used to do the actual image resizing, in one go, so it might not be too much overkill after all.

Note that you can resize an image to a maximum size for both width and height, so there's no need to calculate the final dimensions, based on the aspect ratio, yourself.

And once you have resized your images, you can determine the size of the HTML page (that is, in bytes) with HTTP::Size, which will give you an idea of how long it will take to transfer.

Less important these days when even at home most people have 8Mb/sec download rates (at least in this corner of the planet). On the other hand, if absolute numbers of visitors increases, slimmer pages may mean the difference between hitting your monthly cap, or not, if your hoster is that ways inclined.