Sometimes you only need part of a PDF — one signed page from a contract, a single chapter from a report, or the invoice buried on page 12. Splitting lets you pull exactly those pages into a clean new file. This guide shows you how to do it precisely and privately in your browser, with nothing uploaded.
Quick answer: To split a PDF, open the Split PDF tool, add your file, type the pages or ranges you want (for example
1-3, 5, 8-10), click Extract pages, and download the new PDF. It runs entirely in your browser, so your document is never uploaded, and the extracted pages keep their original quality.
Table of contents
- What is a PDF splitter?
- Why split a PDF?
- How page ranges work
- Features
- Step-by-step
- Examples
- Common mistakes
- Best practices
- Split vs merge
- Related tools
- FAQs
- Conclusion
What is a PDF splitter? {#what}
A PDF splitter extracts selected pages from a PDF and saves them as a new, smaller document. The original is untouched; you get a fresh file containing only the pages you asked for. The Aizen Split PDF tool does this locally with the open-source pdf-lib engine, so your file never leaves your device.
Why split a PDF? {#why}
- Share only what's relevant. Send one page of a contract instead of the whole thing.
- Reduce file size. A 3-page extract is far smaller than a 200-page report.
- Reorganize documents. Pull pages out, then reassemble them in a new order.
- Protect privacy. Remove pages a recipient does not need to see.
- Prepare for merging. Extract the exact pages you want from several files before combining them.
How page ranges work {#ranges}
You tell the tool which pages to keep using numbers and ranges separated by commas:
| You type | You get |
|---|---|
5 |
Page 5 only |
1-3 |
Pages 1, 2 and 3 |
1-3, 7 |
Pages 1, 2, 3 and 7 |
2, 4-6, 10 |
Pages 2, 4, 5, 6 and 10 |
Pages are always output in ascending order. If you need a custom order, extract them and then reorder with a PDF Merger.
Features {#features}
- Extract any page range into a new PDF.
- Runs in your browser — no upload, powered by pdf-lib.
- Lossless — text and images preserved exactly.
- No sign-up, no watermark, no page limit.
Step-by-step {#step-by-step}
- Open the Split PDF tool.
- Add your PDF. The total page count appears.
- Enter the pages to extract, e.g.
1-3, 5. - Click Extract pages.
- Download the new PDF.
Examples {#examples}
- Contract: extract the signature page (
14) to send back. - Report: pull one chapter (
22-38) for a colleague. - Scanned batch: split a stack into individual documents by extracting each range.
- Invoice: grab just the invoice page (
12) from a long statement.
Common mistakes {#common-mistakes}
- Off-by-one ranges. Check the page count first; page numbers are 1-based.
- Trying to split a locked file. Unlock password-protected PDFs before splitting.
- Expecting a custom page order. Output is ascending; reorder afterward with a merger.
- Confusing pages with images. To get images, use PDF to PNG instead.
Best practices {#best-practices}
- Note the page count before typing ranges.
- Keep the original so you can extract different pages later.
- Combine with merging — extract, then reassemble in the order you need.
- Straighten first if a page is sideways, using Rotate PDF.
Split vs merge {#split-vs-merge}
Splitting and merging are two halves of the same workflow. Split to pull the pages you want out of several documents, then merge those extracts into one clean file in the order you choose. Together they let you rebuild any PDF exactly how you want it.
Related tools {#alternatives}
- PDF Merger — recombine extracted pages.
- Rotate PDF — fix page orientation.
- Crop PDF — trim margins.
- PDF to PNG — turn pages into images.
- PDF to Word — make a PDF editable.
FAQs {#faqs}
How do I split a PDF?
Add your file, type the pages or ranges you want (like 1-3, 5), extract, and download. The Aizen tool runs in your browser.
How do I extract specific pages?
Enter the exact numbers and ranges, comma-separated, e.g. 2, 4-6, 10.
Is it free? Yes — no sign-up, no watermark, no page limit.
Is it safe to split PDFs online? Only if there is no upload. The Aizen Split PDF tool works locally.
Does splitting reduce quality? No. Pages are copied exactly.
Can I split a password-protected PDF? Unlock it first.
How do I extract a single page? Enter just that page number.
Can I split into individual pages? Extract each page or range; for images use PDF to PNG.
What's the difference between splitting and merging? Splitting pulls pages out; merging joins files.
Is there a page limit? No server limit; device memory is the practical cap.
Can I split PDFs on my phone? Yes, in any modern mobile browser.
Conclusion {#conclusion}
Splitting a PDF is just picking the pages you want and clicking extract — and because Split PDF runs in your browser, even confidential documents stay private. Pair it with the PDF Merger to extract and reassemble pages into exactly the document you need. For the full merging workflow, read the PDF Merger guide.