How to split a PDF: by page, every N pages or by ranges

Splitting a PDF means turning one document into several smaller ones. It is the quickest way to send just the part someone needs, to separate documents that were scanned in one go, or to get under an upload limit without losing any quality. This guide explains the common ways to split, how page ranges work, and how to keep the results organised.

When splitting is the right tool

Some typical situations where splitting helps:

• Sending one chapter or section. A colleague needs only the budget section of a 90-page report. Sending pages 41 to 48 is more considerate than sending everything and saying "see page 41".
• Separating a batch scan. Office scanners with document feeders make it easy to scan a pile of invoices, payslips or letters into a single PDF. Afterwards you usually want each document as its own file, for filing or for sending to different people.
• Getting under a size limit. If a portal accepts files up to 10 MB and your document is 25 MB, splitting it into three parts keeps full quality. Compression is the other option, covered in how to reduce a PDF's file size.
• Sharing with privacy in mind. A bank statement or medical report may contain pages that are none of the recipient's business. Splitting off only the relevant pages means you share less.
• Preparing pages for reuse. You might split a document so you can recombine some of its pages with pages from other files.

If you simply want to throw away a few pages and keep the rest as one file, deleting or extracting pages is often more direct than splitting. Splitting is about producing several output files.

Three ways to split

Most split tools offer some version of these three modes.

Every page as its own file

Each page becomes a separate PDF. A 12-page document produces 12 files. This is useful when every page is an independent document, such as a stack of single-page invoices or certificates, or when you want maximum flexibility to recombine pages later. For long documents it creates a lot of files, so it is less practical for anything over a few dozen pages.

Every N pages

The document is cut into equal chunks. With N = 2, a 10-page file becomes five 2-page files: pages 1–2, 3–4, 5–6, 7–8 and 9–10. If the page count does not divide evenly, the last file is simply shorter. A 10-page file split every 3 pages gives 1–3, 4–6, 7–9 and a final file with just page 10.

This mode shines with batch scans where every document has the same length. If you scanned twenty two-page forms in one go, splitting every 2 pages separates them perfectly. If you scanned double-sided pages, remember that every sheet adds two pages, including blank backs.

By page ranges

You type exactly which pages go into which file. This is the most flexible mode and the one worth understanding properly.

Page range syntax, with worked examples

A range is written as a first and last page joined by a hyphen, and ranges are separated by commas. Each range becomes one output file. The exact rules vary a little between tools, but the following conventions are widespread:

• 1-3 means pages 1, 2 and 3.
• 7- with no end number means page 7 to the last page. This "open end" is handy because you do not need to know the exact page count.
• Commas separate the files: 1-3, 4-6 produces two files.

Page numbers here mean the position of the page in the PDF, counting from 1. They are not the numbers printed on the page. A book whose first numbered page comes after six pages of title, contents and preface will have its "page 1" at PDF page 7. Your PDF reader usually shows both; use the position.

Worked examples for a 20-page report:

You type	You get
1-3, 4-6, 7-	Three files: pages 1–3, pages 4–6, pages 7–20
1-10, 11-	Two halves: pages 1–10 and 11–20
1-2, 3-12, 13-	Cover and summary, main body, appendices
5-8	One file with pages 5–8

A practical method for messy batch scans: open the PDF, scroll through it, and jot down the first page of each document. If the invoices start on pages 1, 3, 4, 7 and 9, your ranges are 1-2, 3-3, 4-6, 7-8, 9-. Writing the start pages first and filling in the ends afterwards avoids off-by-one mistakes, since each range ends one page before the next one starts.

Double-check that your ranges do not overlap unless you intend it, and that you have not skipped any pages you want to keep. Pages not covered by any range are simply left out.

Naming the results

Split tools usually name output files automatically by adding a number to a base name, such as report-1.pdf, report-2.pdf and so on. That is fine for a moment, but a week later nobody knows what report-2.pdf contains. Rename files whose purpose matters:

• 2026-q3-report-budget.pdf rather than report-2.pdf
• invoice-2026-0412-acme.pdf rather than scan-7.pdf

For batch scans, a consistent pattern of date, type and sender makes files easy to find and sort. Choosing a meaningful base name before you split also helps, because all numbered results then start with it.

Splitting, then recombining

Splitting and merging work well together. Some examples:

• Building a custom bundle. Split chapters out of several long documents, then merge only the ones you need into one file.
• Fixing a scan with a misplaced page. Split the document, then merge the parts in the correct order. (A page organiser that lets you drag pages is often quicker for this; see organizing PDF pages.)
• Replacing a page. Split around the page that needs replacing, then merge the parts with the corrected page in between.

The tips in how to merge PDF files in the right order apply here too. Numbered file names make recombining much easier.

Things to be aware of

• Quality is unchanged. Splitting copies pages as they are, without re-compressing images.
• Size is not simply divided. Each part may need its own copy of shared fonts, so the parts together can be slightly larger than the original. Parts with many images will be bigger than text-only parts.
• Interactive extras may not survive. Bookmarks, form fields and some links may be lost, and a digital signature on the original no longer applies to the split parts.

Doing it on FlexyFiles

1. Open Split PDF and upload your document.
2. Choose a mode: "every page as its own file", "every N pages" (enter N), or "by page ranges" and type ranges such as 1-3, 4-6, 7-. An open end like 7- runs to the last page.
3. Enter a base name under "Save as" and click Run. The parts are numbered automatically (name-1, name-2 and so on) and added to "Your files".
4. Download them one by one, or select several and download them together as a ZIP.

Your original PDF stays unchanged. If you only need one set of pages as a single file, Extract pages or Delete pages is more direct. To recombine parts, open the full workspace at /pdf/app, add the parts or single pages in the order you want and use a Merge step. Files are deleted automatically 48 hours after your workspace was last used, or straight away with "Delete all files".