Games, picture or music players, foreign language word processors are software, to use them correctly, you should follow the instructions of using software. If you transferred a file by incorrect file type, the file would be corrupted. Various web browsers make the transmission much easier. A web browser can identify the file type and transfer it correctly according to the original file type. Therefore, you don't have to worry about not knowing the file type.
Most web browsers provide several ways to download files.
If you want to save a file as a HTML file, the Hyper Text Markup Language codes will be kept. To Disk option. If you want to download an image, some web browsers allow you to click on the image using the right button of your mouse. You will have to select an option to download the image. You will have several options.