How do I choose the split?

Use Pages per PDF when you want the server to group pages automatically, or switch to Custom groups when you want to build exact ranges row by row.

How do custom groups work in split PDF?

Add one row per output file, then enter a start page and end page for that group. For example, one row can be 1 to 3 and the next row can be 4 to 4.

Why is the output a ZIP file?

A split operation creates multiple PDF files, so the tool packages them into one ZIP download to keep the flow simple.

PDF ToolAll tools

Split PDF Online

Split one PDF into separate smaller PDF files online with either a simple pages-per-file rule or custom groups.

Split by custom page groups

Download a ZIP archive

Server-side PDF processing

Split PDF

Output

Choose a file to see the result state here.

Waiting

Processed output appears here

Choose the PDF file set and run the tool. The server will return the finished output here.

Source PDF

ZIP output

When to use this split PDF tool

Use this page when one document needs to become several smaller files for emailing, filing, review, or separate delivery. Start with the simple pages-per-file rule, or switch to custom groups when you need exact page ranges.

Split a large PDF into smaller parts
Choose a simple pages-per-file number
Or switch to custom groups like 1-3 and 4-4
Download all split PDFs in one ZIP file

How the two split modes work

In Pages per PDF mode, enter one number such as 2 or 3 and the server groups pages automatically. In Custom groups mode, add rows with a start page and end page whenever you need more control.

Next PDF page tasks

After splitting a PDF, these nearby tools help keep, remove, or merge pages as the next step in the same document workflow.

PDF Tool

Extract PDF Pages Online

Keep only the PDF pages you want and download a new PDF file.

PDF Tool

Delete PDF Pages Online

Remove selected pages from one PDF and download a cleaned-up file.

PDF Tool

Merge PDF Online

Combine several PDF files into one merged PDF document.

How to Split a PDF Online

1
Upload one PDF
Choose a single source PDF so the split groups all come from one document.
2
Choose the pages per PDF
Start with Pages per PDF for a quick split, or switch to Custom groups if you need exact page groups.
3
Download the ZIP
The server creates a PDF for each chunk and packages all of them into one ZIP download.

Split PDF FAQ

More PDF Tools

Keep moving through nearby PDF workflows from the same toolkit so each page links to the next practical step.

Extract PDF Pages

Keep only the PDF pages you want and download a new PDF file.

Delete PDF Pages

Remove selected pages from one PDF and download a cleaned-up file.

Merge PDF

Combine several PDF files into one merged PDF document.

Hub

Browse all PDF tools

Jump back to the PDF tools section on the homepage to move between merge, split, extract, rotate, watermark, and page-edit workflows.