The Portable Document Format (PDF) is a file format used to present documents independent of application software, hardware, and operating systems. The ACSM file is only information for activating and downloading an ebook in Adobe Digital Editions. It cannot be opened and read, as is the case with EPUB or DJVU. Actually, the ACSM file is not an ebook format. Adobe Digital Editions uses it to activate and download Adobe DRM-protected content. acsm is an Adobe Content Server Message file.
Application/pdf, application/x-pdf, application/x-bzpdf, application/x-gzpdfĪ file.
