You are able to uploaded any file to your blog provided the file is not larger than the maximum file upload size (50 MB), it is an allowed file format and you have sufficient blog storage space available. Your Storage ‘Space Used’ is displayed in your media library (Media > Library) and is based on all the files in your media library.
Before uploading files to your blog, please ensure that you own, or have permission to distribute them. If you do not own the files, and do not have express permission from the owner or copyright holder, you aren’t allowed to use on your blog.
Refer to Fair use, copyright and introductions to using images to learn more.
Allowed file formats include:
. ins, .isf, .te, .xbk, .ist, .kmz, .kes, .flp, .wxr, .xml, .fjsw, .kmz, .zip, .epub