If you don't have Adobe InDesign installed, these web-based tools are the most reliable options currently available:
For users without InDesign, the most "verified" and industry-trusted solution is . They are a long-standing third-party developer specializing in conversion software. indd to idml converter online verified
: A dedicated online portal where you can upload INDD files and export them to IDML, PDF, and other formats. IDMarkz (Desktop App) If you don't have Adobe InDesign installed, these
A legitimate converter will clearly state its maximum file size (typically 50MB to 500MB for free tiers). Unverified tools may crash silently without warning. indd to idml converter online verified