Scanned files often end up upside down or in the wrong order. OmniTool Hub provides an interactive thumbnail grid where you can rotate individual or all pages by 90°, 180°, or 270°, drag pages into proper order, and click to delete blank or unwanted pages instantly.
Key Property Parameters & Specifications
| Action | Transformation | Shortcut / Control |
|---|---|---|
| Rotate 90° Clockwise | Updates `/Rotate` page dictionary entry (+90°) | Click rotate icon on thumbnail or press `R` |
| Rotate 180° (Invert) | Flips inverted scan right-side up (+180°) | Two clockwise rotations or inverted toggle |
| Drag & Drop Reorder | Rearranges index order in root page array | Click and drag thumbnail to desired slot |
| Delete Page | Removes page node from `/Pages` dictionary tree | Click trash icon on thumbnail or press `Del` |
Implementation Guide & Technical Reference
Updating Page Rotation Dictionary via pdf-lib
const page = pdfDoc.getPage(pageIndex);
const currentRotation = page.getRotation().angle;
page.setRotation(degrees((currentRotation + 90) % 360));Lossless coordinate rotation.
Frequently Asked Questions (FAQ)
Does rotating a page degrade the scan resolution?
No. PDF rotation merely changes the coordinate orientation metadata tag (`/Rotate`). The image pixels and text vectors remain completely untouched and loss-free.
Can I rotate all pages at once?
Yes. The toolbar features "Rotate All Clockwise" and "Rotate All Counter-Clockwise" buttons for quick batch alignment.
Can I undo accidental page deletions?
Yes. The organizer maintains an undo history stack so you can restore deleted pages before saving.
Will the reordered PDF work in all readers?
Yes. The updated page tree is fully compliant with standard ISO PDF specifications.