- Add page navigation controls to preview different pages
- Implement automatic orientation detection based on page dimensions
- Improve grid overlay rendering to only show for selected pages
- Cache page snapshots for better performance
The Y-axis calculation in the `posterize` function was backward for `pdf-lib`'s bottom-left origin, causing the resulting PDF tiles to display only the bottom portion of the content, leaving large empty crops.
Corrected the `y` coordinate calculation using `tileRowIndexFromBottom = rows - 1 - r` to properly map the top-to-bottom loop index to the required bottom-up positioning.
Add new posterize feature that allows splitting PDF pages into a grid of smaller pages. The tool includes:
- Configurable rows and columns
- Page size and orientation options
- Content scaling modes
- Overlap settings for assembly
- Page range selection
abdullahalam123