Conversion of zip files to xap file format

Usually it is not possible to directly convert ZIP archives  to XAP format, simply because .xap files are already renamed .zip files. However, some Windows Phone packages (.xap) can be distributed as .zip files. In these cases, you will just need to extract the content, no conversion is required. Also some server downloads change the extension from xap to zip, if that happens you just need to rename the extension back, but otherwise we do not have any information about possible zip to xap conversion.

Open ZIP file    Open XAP file