For years I wish there was an extension that can recognize what I am downloading. For example if I am downloading a jpeg I wish it would save it into Pictures folder or if I am downloading a PDF to save it to my PDF folder etc. Just a simple addon that gives you option to chose which type of file would be downloaded to which folder. For work I download a lot of materials and all is placed in the download folder automatically, after a week or so with about 200 files I use a special batch script that I call "sorter" it creates a folder for the extensions eg. if there is no folder called jpg for jpg files and I have a jpg file in downloads folder, it will create a new folder called jpg and move all the jpg files to jpg. In the end I have all files sorted in folders per type of file.