Web Resizer was made to convert and downscale common graphic formats including JPEG, JPEG 2000, PNG, WMF, TGA to standard web graphic formats i.e. JPEG and PNG for browsing friendly size. When you are using this kind of software (image viewer or image resizer or some kind), perhaps you have experienced that once you select a folder it contains many big images, your application is not responding or your application is freezing. Possibly you have a lot of Mega pixels images inside the selected folder and your application tries to load all those images. It takes a very long time even if you have a fast PC. And you are not able to do anything until it loads all image files on the memory and actually it must reload them all when you want to convert or resize them. But it will not happen with Web Resizer. Web Resizer does not load images before you choose to load them - you will not see thumbnail images on the list view when you just select a folder.