I like how easy it was to use this software, as well as the ability to choose between various sizes/compressions available with different file formats (jpg or jpeg). The only thing that bugged me about bulk resize photos was not being able to preview the pictures before they were uploaded. This isn't too much an issue, but still could be solved if you wanted to. It's pretty straight forward once you get used to using the program. You can compress the files quickly without having to upload each one separately.