About
Momovu is a PDF margin visualization tool specifically designed for the publishing industry. It helps publishers, book designers, and print professionals ensure their PDFs have proper margins, spine widths, and layout specifications before sending them to print.
Purpose
Publishing books requires precise attention to margins, bleeds, and safety zones. A small error in margin calculations can result in text being cut off, images bleeding incorrectly, or spine text being misaligned. Momovu addresses these challenges by providing:
Real-time visualization of safety margins and trim lines
Spine width calculations based on page count
Dustjacket layout preview with flap dimensions
Interactive tools for examining every detail of your PDF
Momovu displaying a book cover with trim lines, safety margins, fold lines, and bleed lines
Use Cases
Book Publishers
Verify interior margins meet printer specifications
Check that content stays within safety zones
Preview how pages will appear in spreads
Ensure consistent margins across all pages
Cover Designers
Visualize spine width for different page counts
Check barcode placement areas
Verify bleed and safety margins
Preview fold lines for perfect binding
Print Shops
Quality control before printing
Client approval presentations
Troubleshooting margin issues
Verifying file specifications
Technology
Momovu is built with modern Python technologies:
PySide6/Qt6: Cross-platform GUI framework
QPdfDocument: Native PDF rendering
Python 3.9+: Modern Python features
Performance optimized: Efficient rendering and resource management
Project Information
Main Website
Source Code
Status
Stable - The application is functional and stable.
License
Momovu is released under the Apache 2.0 License, making it free for both personal and commercial use.