Files that contain the .acsm file extension are most commonly associated with the Adobe Digital Editions application that is distributed by Adobe. This software allows users to view and manage digital publications such as eBooks and digital magazines.
When eBooks and other digital publications are purchased online, the ACSM files are used to manage and download the digital content. These files contain information that is required to activate and download the eBook or other publication so that a user can read it on their computer or mobile reading device. The files ensure the copyright protection of the file in question.
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If you have additional information about the ACSM file format or software that uses files with the ACSM suffix, please do get in touch - we would love hearing from you.