How to open .master file format?

The probably reason why you are at this website is a problem with opening .master file. The full name of the file is ASP.NET Master Page. If the double-click on the file’s icon shows you a message that additional programs are needed to open the file, you’ll find the list of helpful programs in the bottom of the page.The developer of this format is Microsoft.

.master file extension (ASP.NET Master Page)

Category Developer/Producer File description Popularity
Web Files Microsoft ASP.NET Master Page
Programs using this file extension: .master
ADS OS Software
  • Microsoft Visual Studio 2012
  • Microsoft Visual Web Developer
  • Microsoft WebMatrix

The file extension .master can be used by another programs. If you have some useful information about .master file type that may help other users, please send them to us and we’ll update our database.

Visiting our website you are probably asking yourself:
  • What application can open .master file?
  • How to open .master file?
  • What is .master file?
  • How can I convert .master file?
  • Where can I find informations about .master file extension? (for example on the File Extension website)
We hope we have given you enough informations about this file type. Otherwise you can search some informations about .master extension on