Split PDF

Split, organize, or merge — which one you want

Three different jobs get confused with each other, and picking the wrong tool is the usual reason people end up redoing the work:

• Splitting — this page — takes one document and produces several files. Use it when the pages need to travel separately.
• Organizing gives you back a single file with some pages removed, rotated, or moved. If your goal is “the same document, minus the appendix”, the Organize PDF tool is the shorter path — you click thumbnails instead of working out ranges.
• Merging is the inverse of splitting. Scattered pages that need to end up in one document go through the Merge PDF tool instead.

A common combination: split out the ranges you care about, then merge those results back into one file in a new order. Both steps run locally, so the document never makes a round trip to a server in between.

What splitting does to the file itself

Each range is written as a brand-new PDF, and the pages are copied into it rather than redrawn. Nothing is rasterised and nothing is re-compressed, so text stays selectable and searchable, vector graphics stay sharp at any zoom, and images come through at their original resolution. The file is rewritten around them, so it will not be identical byte for byte — but nothing on the page is degraded on the way out.

File size follows page count fairly closely, which is why splitting is often a better answer to an oversized document than compression is — see PDF too large to email for the full comparison. One caveat: shared resources such as an embedded font are duplicated into every output file that needs them, so ten single-page splits can add up to more than the original did.

Page numbers, and what limits the size you can handle

Ranges count sheets in the file starting from one, which is not always the number printed on the page — a report with four pages of front matter is off by four. The total is shown the moment your file loads, so the numbering is easy to sanity-check before you commit to it.

There is no page cap, file-size cap, watermark, or account. The only real ceiling is your own hardware: the document is held in your browser’s memory while it is worked on, so a very large scan is bounded by the memory your device has free rather than by a server quota. If a big file struggles on a phone, the same split usually goes through without complaint on a desktop.