Adobe InDesign is the industry standard for professional page layout and design, but it has a significant limitation when it comes to backward compatibility. If you create or save a document in a newer version of InDesign, that file cannot be opened directly by an older version of the software [9†L5-L8]. There is no option that lets you downgrade the native .indd file format.
For enterprise users with many files, Adobe ExtendScript can automate IDML export. A simple script example: how to convert indesign file to older version
If your newer document uses (introduced in newer CC versions) or specific modern graphic effects like modern blending modes, SVG graphics, or advanced shading, the older version of InDesign will not know how to render them. Variable fonts will typically revert to a default fallback typeface (like Minion Pro or Myriad Pro), and complex vector properties may rasterize into flat images. Paragraph Borders and Shading Adobe InDesign is the industry standard for professional
Adobe InDesign is a powerful desktop publishing software that has become an industry standard for creating brochures, magazines, newspapers, and other print materials. With each new version, InDesign introduces new features and improvements, but this can also lead to compatibility issues when working with files created in older versions. If you need to convert an InDesign file to an older version, you may encounter difficulties, especially if you're not familiar with the process. In this article, we'll walk you through the steps to convert an InDesign file to an older version, exploring various methods and tools to help you achieve compatibility. For enterprise users with many files, Adobe ExtendScript
If you don’t want to install any software and need a one-off conversion, online tools are a perfect solution.
To open a file created in a newer version of InDesign on an older version of the software, you must use a specific interchange format called (InDesign Markup Language).