The .IDDX file extension refers to a Static Default File. It is related to Adobe InDesign, which is a desktop publishing application by Adobe Systems. You can find .IDDX files in the InDesign or InCop...
The .IDDX file extension refers to a Static Default File. It is related to Adobe InDesign, which is a desktop publishing application by Adobe Systems. You can find .IDDX files in the InDesign or InCopy Presets/Default directory. We provide free online .IDDX file tools and apps to view, edit, convert, merge, split, and compare .IDDX files without installing anything.
When you double-click a .IDDX file to open it, Windows checks the filename extension. If Windows recognizes the extension, it opens the file in the associated program. When Windows does not recognize the extension, you receive a message to select an app to open the .IDDX file. It means Windows does not have a default app for .IDDX files.
You may need to update the application you normally use to open .IDDX files. Only the latest version supports the format. Or you need to check the file for viruses by scanning it with an antivirus program. Learn more about the .IDDX file opener and alternatives on the official Adobe InDesign web page. On Mac and Windows, you can launch .IDDX files with Adobe InDesign CC 2019 or other listed software. You can also get a .IDDX file editor from the official page.