A web publishing application can generate and save web files to a web server based upon a user's design of a web page or web site. If the user subsequently modifies the web page or web site using the web publishing application, the web publishing application can identify and save only the new web files and modified web files to the web server that result from the user's modifications. For example, the web publishing application can identify which web files are new files and which web files have been modified by comparing the hash values and hash algorithms associated with the web files to the hash values and hash algorithms associated with the stored web files.

 
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