PPM stands for Portable Pixel Map and is an extension used to render images that are uncompressed. The extension was developed years ago during the early days of Internet. Due to the fact that these files are not compressed, their size is usually larger and their quality is lower. Flipnote Studio creates and opens these files, however it is currently only available for the Nintendo DS console. Fortunately, there are a number of free tools that can be used for opening such files and converting them to more accessible formats, such as .jpg.
Use the "tar" command if running under Linux, followed by "make" and "make install" in order to install the application. In Windows or OS X, double-click the downloaded file and the program should install automatically.
Open GIMP. Go to "File" and "Open." Browse to the PPM file and double-click on it to open it. If running under Windows, the image will be displayed into one of the three separate windows that are part of the GUI. In Linux or Mac OS X, there is a single window.
Go to "File" and "Save As." Choose a file type from the drop down menu and press "Save" to save the file in a different format.
Download and install IrfanView.
Browse to the PPM file, and double-click on it to open it. IrfanView will automatically display it in a new window. This occurs because IrfanView automatically associates itself with supported file types after installation.
Go to "File" and "Save As" to save the image in a different format.
Download Open Office.
Double-click on the installer. Choose "Custom" from the install menu.
Select "Picture Viewer" from the list of available installations. Follow the on-screen steps to finish the installation.
Open Picture Viewer.
Go to "File" and "Open." Browse to the PPM file and double-click on it to open it. The image is displayed in a new window.