What is a DTSX file?
A .DTSX file is primarily a SQL Server Integration Services (SSIS) package. Microsoft created this format to store data migration instructions, database transformations, and workflow steps. These files contain programmatic instructions used by Microsoft SQL Server to move data between different databases or servers. In some situations, a .DTSX file can also function as a DTS Settings File.
How to open DTSX files?
Developers usually open .DTSX files using Microsoft Visual Studio with the SQL Server Data Tools (SSDT) extension. This provides a visual workspace for data workflows. Because a .DTSX file stores data as plain text using the XML structure, you can also open and read the underlying code with basic text editors like Notepad++ or Visual Studio Code. To execute the file as an active process, administrators use the dtexec command-line utility.
Identify your file with viewer.online
Because the extension has multiple possible meanings, viewer.online/dtsx analyzes .DTSX files to identify their exact format and creator software, shows which programs can open the file, and usually previews it. This helps you confirm whether your file is a standard SSIS package or a rarer settings format.
Summary
Because .DTSX files use the known XML format, viewer.online/dtsx can safely open and display them online, eliminating compatibility problems.