Your original MOBI file is now permanently edited.
Use (GUI or CLI) – it rewrites MOBI safely. mobi info edit manual
Optimized for configuring exterior destination signs where drivers manually select routes. It focuses on essential line and destination data. Your original MOBI file is now permanently edited
Editing metadata in Calibre’s library view only changes Calibre’s catalog. To embed changes into the actual MOBI file: mobi info edit manual
While primarily for checking formatting, Amazon’s official previewer can sometimes be used to view metadata, though its editing capabilities are limited compared to Calibre.