How to Split a PDF by Chapter, Page, or Batch

"Split this PDF" means three different things depending on what you need out the other end: a few named sections, a set of equal batches, or every page on its own. Picking the wrong one turns a thirty-second job into renaming forty files by hand.

Here is how to choose, and what happens to the document along the way.

The Three Modes

Split by page range

You type the ranges you want — 1-5, 6-12, 13-40 — and get one file per range.

This is the mode for documents with meaningful sections: a report where you need the executive summary separately, a scanned bundle where pages 12–18 are the contract, a manual you want to break into chapters. It is the only mode where you decide where the boundaries fall.

Split every N pages

You give a number, and the document is cut into equal chunks of that many pages. A 96-page file split every 12 pages gives eight files.

This is for volume rather than meaning. Uploading to a system with a page cap, distributing a long scan across several attachment slots, or batching pages for review — anywhere the content does not dictate where the breaks go.

Split into single pages

Every page becomes its own file. A 40-page document produces 40 files.

Use it when pages are going to different places — separate invoices scanned in one pass, certificates for different people, forms to be routed individually.

How Page Numbers Are Read

Ranges start at 1, not 0, and include both ends. 1-5 gives you five pages: 1, 2, 3, 4 and 5. This matches how you would describe it out loud, which is the point, but it catches people who expect programming-style counting.

A number past the end of the document is trimmed to the last page rather than failing. On a 20-page file, 18-999 gives you pages 18, 19 and 20. That is deliberate — it means you can ask for "page 18 to the end" without counting first.

What Carries Over

Each output file is built fresh and the pages you selected are copied into it. So the same rule applies as with merging:

Page content is untouched. Text, fonts, images and vector graphics are copied exactly. Nothing is re-encoded, so splitting never degrades quality and never changes file size beyond removing the pages you left out.

Each page keeps its own dimensions. Mixed page sizes split correctly.

Annotations and links on a page travel with it. A highlight on page 7 is still there in whichever output file contains page 7.

The document outline does not carry over. Bookmarks live at the document level, not on pages, and the new files are created without one.

Form fields stop working as fields. They still look right, but the document-level form catalogue is not rebuilt. If the pages you are splitting contain a form somebody needs to fill in, fill it first with Fill PDF Form so the values become page content.

Password-protected files must be unlocked first. Use Unlock PDF, which needs the password.

Split or Extract?

These overlap, and the distinction is about what you want left behind.

Splitting divides a document into several files that together account for the whole thing. Nothing is discarded.

Extracting pulls specific pages out into one new file and ignores the rest. If you need pages 4, 9 and 22 of a 60-page report in a single document, that is an extraction — splitting would give you three separate files, or a lot of ranges you do not want.

Rule of thumb: several files out, use split. One file containing a selection, use extract.

Practical Notes

Check the page numbers in the document, not on the page. Reports often have unnumbered covers, so the page printed "1" may be the file's page 3. Scroll to the boundary before typing the range.

Splitting is lossless, so experiment freely. You cannot damage the source by splitting it the wrong way. Nothing is modified — new files are created.

For many outputs, expect a ZIP. Splitting a long document into single pages produces a lot of files; they come down together rather than as dozens of separate downloads.

Name things while you still remember. document-1.pdf through document-8.pdf tells you nothing next week. Rename to the section immediately.

A Common Workflow

Long scanned bundles usually need the same sequence:

1. Split by range to separate the genuinely different documents in the bundle.
2. Rotate any section that was fed into the scanner sideways.
3. Compress only the parts you are sending somewhere with a size limit.
4. Keep the original bundle. If a range was off by a page, you will want to redo it rather than reassemble.

The whole sequence runs in the browser — the files never leave your device, which matters when the bundle you are cutting up is a set of medical records or a case file.

Frequently Asked Questions

Does splitting reduce quality? No. Pages are copied exactly as they are, so a split is lossless. Output files are smaller only because they contain fewer pages.

What happens if I ask for a page range beyond the end of the document? The range is trimmed to the last page rather than failing. On a 20-page file, asking for 18-999 gives you pages 18 to 20.

Do page ranges include the last page I type? Yes. Ranges include both ends, so 1-5 gives five pages.

Can I split a PDF without downloading a lot of separate files? Splitting into many files delivers them together rather than as individual downloads. If you only want specific pages in one file, use Extract PDF Pages instead.

Will my bookmarks survive the split? No. Like merging, splitting builds new documents and the document outline is not rebuilt.

Can I split a protected PDF? Remove the password first with Unlock PDF. Encrypted files cannot be read until they are unlocked.