To allow a user having acquired a browsing file to confirm presence/absence of update of an original document more easily than before.
An image forming apparatus 1A includes: an original file storage part 1M1 storing an original file 5A of a document created by a first application; a browsing file generation part 102 converting the original file 5A into a format corresponding to a second application, and adding a URL (Uniform Resource Locator) for accessing the image forming apparatus 1A from another device to generate the browsing file 5B; a difference list or the like generation part 105 recording update information of the document; and a difference list file or the like distribution part 106 distributing the update information of the document to the other device when the access to the image forming apparatus 1A from the other device is performed.
OSHIMA KOJI
MURAKAMI MASAKAZU
YOSHIMURA TOMOYA
Yasuhiro Sakata
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