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The File Format Database

Search over 10,000 file extensions and software programs.

Developer: Microsoft

.MSPX File Extension

Microsoft ASP.NET Web Page

“Explore the .MSPX file extension: Its origin, history, technical details, advantages, disadvantages, conversion methods, and how to open it across
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.MASTER File Extension

ASP.NET Master Page

Learn about the .MASTER file extension: Its origin, history, structure, advantages, conversion methods, and how to open it on different
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.SITEMAP File Extension

ASP.NET Site Map File

The .SITEMAP file extension is commonly used for XML files that define the structure of a website’s pages. It helps
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