What if you don't have access to the newer InDesign at all? You have an old version (like CS6 or CC 2018) and you received a CC 2024 file. You need a middleman.
⚠️ Be extremely careful uploading proprietary or client files to third-party web services. Only use this method for non-confidential, sample files. how to convert indesign file to older version
If you have access to the newer version of InDesign that created the file, follow these steps: What if you don't have access to the newer InDesign at all
Always check the following elements after performing a conversion: 1. Text Reflow and Typography how to convert indesign file to older version