ASMX

Active Server Plus Web Services source data
File type: Source code and script file, Internet related file
An asmx file extension is related to the Active Server Plus Web Services. An asmx file stores source data.
What is asmx file?
File type category:
Source code and script file
Internet related file
Date updated: June 27, 2025
The asmx file extension is associated with Microsoft Active Server Plus.
The asmx files are used for source files, which define web services called by an Active Server Page file (asp file extension) and are automatically compiled by ASP.NET when a request to the service is made. It can be accessed over the Internet or from a local network.
The asmx files begin with the ASP.NET directive "WebService," followed by the "Language" parameter. This is used to set the programming language to Visual Basic, C#, or JScript. They can be run using a Windows-based Web server with the .NET framework.
How to open asmx file?
Use any text editor or specialised application able to work with the asmx files, or use any internet browser to view the page.
How to convert asmx file?
Probably cannot be converted to other formats.
Suggested software to open asmx file:
Associated software actions with the asmx file
Software applications that can open asmx files:
ASP.NET (Microsoft Windows)
Adobe Dreamweaver (Microsoft Windows)
Adobe Contribute (Microsoft Windows)
Opera browser (Microsoft Windows)
Microsoft Edge (Microsoft Windows)
Firefox (Microsoft Windows)
Google Chrome (Microsoft Windows)
Safari for Microsoft Windows (Microsoft Windows)
Adobe Dreamweaver for Mac (Apple macOS / Mac OS X)
Opera browser for Mac (Apple macOS / Mac OS X)
Firefox for Mac (Apple macOS / Mac OS X)
Safari (Apple macOS / Mac OS X)
Google Chrome for Mac (Apple macOS / Mac OS X)
Opera browser for Linux (Linux/Unix)
Chromium for Linux (Linux/Unix)
Firefox for Linux (Linux/Unix)
Konqueror (Linux/Unix)
Software applications that can edit asmx files:
ASP.NET (Microsoft Windows)
Adobe Dreamweaver (Microsoft Windows)
Adobe Contribute (Microsoft Windows)
Adobe Dreamweaver for Mac (Apple macOS / Mac OS X)
Software capable of saving asmx files:
ASP.NET (Microsoft Windows)
Adobe Dreamweaver (Microsoft Windows)
Adobe Contribute (Microsoft Windows)
Adobe Dreamweaver for Mac (Apple macOS / Mac OS X)
Programs for viewing asmx files:
Opera browser (Microsoft Windows)
Microsoft Edge (Microsoft Windows)
Firefox (Microsoft Windows)
Google Chrome (Microsoft Windows)
Safari for Microsoft Windows (Microsoft Windows)
Opera browser for Mac (Apple macOS / Mac OS X)
Firefox for Mac (Apple macOS / Mac OS X)
Safari (Apple macOS / Mac OS X)
Google Chrome for Mac (Apple macOS / Mac OS X)
Opera browser for Linux (Linux/Unix)
Chromium for Linux (Linux/Unix)
Firefox for Linux (Linux/Unix)
Konqueror (Linux/Unix)
Software apps that create asmx files:
ASP.NET (Microsoft Windows)
Adobe Dreamweaver (Microsoft Windows)
Adobe Contribute (Microsoft Windows)
Adobe Dreamweaver for Mac (Apple macOS / Mac OS X)
Software apps that print asmx files:
ASP.NET (Microsoft Windows)
Adobe Dreamweaver (Microsoft Windows)
Adobe Contribute (Microsoft Windows)
Microsoft Edge (Microsoft Windows)
Firefox (Microsoft Windows)
Adobe Dreamweaver for Mac (Apple macOS / Mac OS X)
Firefox for Mac (Apple macOS / Mac OS X)
Firefox for Linux (Linux/Unix)
Software applications that handle other tasks involving asmx files:
ASP.NET (Microsoft Windows)
Adobe Dreamweaver (Microsoft Windows)
Adobe Contribute (Microsoft Windows)
Adobe Dreamweaver for Mac (Apple macOS / Mac OS X)
Adobe Creative Suite for Mac (Apple macOS / Mac OS X)