How do I split a PDF every 10 pages?

Type ranges of ten pages separated by commas, such as 1-10, 11-20, 21-30, ending at the last page. Each range becomes its own PDF file.

How do I split a PDF into 3 equal parts?

Divide the page count by 3 and round up to get pages per part. For 47 pages that is 16, so type 1-16, 17-32, 33-47.

Will splitting a PDF make it smaller?

Each part is smaller than the whole, but splitting does not compress pages. Shared fonts and images are copied into each part, so the parts can add up to more than the original.

What if my last range goes past the final page?

The tool stops at the last page. A range that starts after the last page is skipped.

How to Split a PDF Into Equal Parts (Every 10, 20 or 50 Pages)

The short answer

To split a PDF into equal chunks, open Split PDF, choose Split by page range, and type one range per chunk separated by commas, for example 1-10, 11-20, 21-30, 31-40, 41-47 for a 47-page file. Each comma-separated range becomes its own PDF, and Download All as ZIP saves them in one go. The last range can simply stop at the final page.

When you need equal-sized parts

Upload limits. A portal or email service rejects a large PDF, but accepts several smaller ones.
Sharing chapters. A 200-page manual is easier to send as sections of 25 or 50 pages.
Printing or review in batches. Reviewers each take a block of pages.
Scanned bundles. A scanner produced one long PDF from a stack of separate two-page forms.

How range splitting works in this tool

The rule is simple: every comma starts a new file.

1-10 means pages 1 to 10 in one file.
1-10, 11-20 means two files: pages 1 to 10, and pages 11 to 20.
5 on its own means a one-page file containing page 5.

Each output file is named after your original with the page range added, such as report_pages_11-20.pdf, so the parts stay in order when you sort by name.

If you want every page as a separate file, choose Split all pages individually instead of typing ranges.

Step by step

Open Split PDF and drop your file, or click to browse. The tool shows the file name, the number of pages and the size.

Leave Split by page range selected. The range box is pre-filled with the whole document, for example 1-47.

Replace it with your chunk list, such as 1-10, 11-20, 21-30, 31-40, 41-47.

Click Split PDF.

Download each part individually, or click Download All as ZIP to get them all in one file.

The file is processed in your browser, so the PDF is not uploaded to a server.

Ready-made range lists

To build the list yourself: start at page 1, add the chunk size minus one to get the end page, then start the next chunk on the following page. Stop when you reach the last page.

Total pages	Chunk size	Type this
47	10	1-10, 11-20, 21-30, 31-40, 41-47
60	20	1-20, 21-40, 41-60
120	25	1-25, 26-50, 51-75, 76-100, 101-120
150	50	1-50, 51-100, 101-150
36	2	1-2, 3-4, 5-6 and so on up to 35-36

Splitting into a set number of equal parts

To split into N parts instead of N pages, divide the total pages by N and round up to get the chunk size.

Example: 47 pages into 3 parts. 47 ÷ 3 = 15.67, round up to 16 pages per part. Type 1-16, 17-32, 33-47. The last part has 15 pages because 47 does not divide evenly.

A shortcut for the last range

You do not have to work out the exact final page. If an end page is bigger than the document, the tool stops at the last page. For a 47-page file, 41-50 produces pages 41 to 47.

Things to check before you split

Keep chunk boundaries sensible

Equal page counts can cut a chapter, an invoice or a form in half. Scroll through the original first and adjust a range by a page or two if a section would be split awkwardly. Ranges do not all have to be the same length.

Splitting does not compress

Each part contains its pages exactly as they were. If you are splitting only because of a file-size limit, be aware that the sizes of the parts can add up to more than the original. Shared items such as fonts or a logo used on many pages are copied into every part that uses them.

If one part is still too big, split that part again with smaller ranges, or choose fewer pages per chunk from the start.

Password-protected files

If the PDF needs a password to open, remove the protection in a reader where you know the password and save an unprotected copy before splitting.

Fixing common range mistakes

You typed	What happens	Fix
10-1	No file for that range, because ranges must count upwards	Type 1-10
60-70 on a 47-page PDF	No file for that range, because it starts after the last page	Remove it or start within the document
1-10 11-20 (no comma)	Not read as two ranges	Separate every range with a comma
1-10, 10-20	Page 10 appears in both files	Start the next range one page later: 11-20

If you get fewer files than you expected, count the commas in your list: one file is made per valid range.

Putting parts back together

Need to undo a split, or combine some of the parts in a different order? Use Merge PDF and add the files in the order you want.

And if what you need is a single file containing a few scattered pages, such as pages 2, 5 and 9, see How to Save Non-Consecutive PDF Pages as One PDF.

Check the parts before you send them

Open the first and last part. Confirm the first page of each part is the page you expected, especially if you adjusted ranges around chapter breaks.
Compare page counts. The page counts of all parts should add up to the original, unless you deliberately overlapped or skipped pages.
Check the file sizes against the limit you are working to before you start uploading.
Keep the original. Splitting creates new files and leaves your source PDF unchanged, so you can always start again with different ranges.

Quick recap

Every comma-separated range becomes one PDF.
Chunk size N: 1-N, (N+1)-2N, and so on to the last page.
N equal parts: total pages ÷ N, rounded up, is your chunk size.
Ranges past the end are trimmed to the last page; ranges that start past the end, or count backwards, are skipped.
Download All as ZIP gives you every part at once.