.EDMX File Info & Viewer

Open & inspect
.EDMX files online

Can't open an Entity Data Model file? View your .EDMX files here for free.

Drag & drop your .EDMX file here
or click to browse from your device
Data Model XML files & more
Uploading...
Extension
.EDMX
Category
Developer
Primary Use
Entity Data Model Design
Primary Software

Visual Studio

What is an EDMX file?

An .EDMX file is a developer file that defines database structures. It usually stands for an ADO.NET Entity Data Model Designer File created by Microsoft for the Entity Framework. Developers use Visual Studio to build these data models visually. Alternatively, an .EDMX file can be an OData service metadata file defined by the OASIS Open Data Protocol.

How to open EDMX files?

viewer.online/edmx analyzes .EDMX files to identify their exact format and creator software, shows which programs can open the file, and usually previews it. Because .EDMX files store plain text, you can also inspect them using editors like Visual Studio Code or Notepad++. To see the visual database diagram, you must use the Entity Data Model Designer in Visual Studio.

Best practices and tools

If your .EDMX file does not display correctly in a project, it might be corrupt or missing database connection strings. Since the .EDMX extension has multiple possible meanings, we recommend using viewer.online/edmx to identify the actual format of your file.

Summary

Because .EDMX files use the known XML format, viewer.online/edmx can safely open and display them online, eliminating compatibility problems.

Frequently Asked Questions

What does EDMX stand for?

It stands for Entity Data Model XML. It is a file used by the Microsoft Entity Framework to map database tables to application code.

How do I view the contents of an .EDMX file without Visual Studio?

You can open an .EDMX file in any standard text editor like Notepad++ or use an online tool like viewer.online/edmx to inspect its XML code.

Why does my .EDMX file only show text?

If you open the file outside of the Entity Data Model Designer, you will see its raw XML structure. You need Visual Studio to see the visual database diagram.

What are the core components of an EDMX file?

An .EDMX file contains three main sections: CSDL (conceptual schema), SSDL (storage schema), and MSL (mapping specification).

Are .EDMX files safe to open?

Yes. Because they are based on the standard XML format, they contain text data rather than executable code. However, always verify the source before adding them to your software project.

Ready to inspect your .EDMX file?

Upload any .EDMX file and instantly identify its format, extract content, and preview it online.

Drop file here