Organize PDF pages

Two engines: one to preview, one to rebuild

Reorganizing a PDF visually needs two different jobs done well, so this tool uses two libraries. pdf.js renders a small thumbnail of every page to a canvas, giving you a grid you can actually see and reason about — essential when a scan arrived out of order or a report has a blank page buried in the middle. Then, when you export, pdf-lib rebuilds the document from the original bytes: it copies the page objects in your new order, applies your rotations, and drops the pages you deleted. The thumbnails are throwaway previews; the saved file is assembled from the untouched source pages, so text, fonts, and image resolution survive intact. Both steps run in your browser, so the document is never uploaded.

Rotation is a flag, not redrawn pixels

When you turn a page, the tool does not re-render it sideways. Every PDF page carries a /Rotate entry — a multiple of 90 degrees — that tells the viewer how to display the otherwise-unchanged content. The organizer simply adds your 90° steps to whatever rotation the page already had and writes the combined value back. That is why rotating is instant and lossless even on a huge scan: no pixels are recomputed, just one number per page. Deleting works the same way — a removed page is just left out of the rebuild, so the file shrinks by exactly that page's content with nothing re-encoded. Use Reset at any time to reload the original and start over; nothing is committed until you click Save.

Organize vs. split vs. merge

These three PDF tasks overlap, so it helps to know which fits. Organize is for reshaping one document — same pages, new order, rotation, or with a few removed. If instead you want to pull a subset into its own file or burst a stack into single pages, the split PDF tool is the right one. And if your pages live across several files, combine them first with merge PDF, then come back here to fine-tune the order. A practical workflow is merge → organize → save.