Hello everyone,
I'm looking for a way to protect my EPUB files from being modified. I want to create a read-only version that prevents editing while still being readable in standard ebook readers.
My specific constraints:
- The EPUB contains audio elements (so PDF conversion isn't suitable)
- I primarily use Calibre for reading and Sigil for editing
- I prefer solutions using these tools rather than additional software
- I don't want to use DRM protection
What I've tried:
- Setting file permissions to "read-only" in the OS
- Configuring Calibre settings to prevent writing annotations back to the file
Questions:
- Are there specific Calibre settings to make EPUBs open in read-only mode?
- Can Sigil be used to create a protected version?
- Are there EPUB-specific features (like FXL - Fixed Layout) that make modification more difficult?
- What are the best practices for EPUB protection without DRM?
Any suggestions or step-by-step guidance would be greatly appreciated!