PDF Merger & Splitter
Merge multiple PDFs, split by pages, or compress. Drag-and-drop reordering with page previews.
Drop multiple PDFs here to merge
PDF files only
Max 100MB per file
What is the PDF Merger & Splitter?
This free, client-side PDF tool gives you three powerful operations in one: Merge multiple PDFs into a single document, Split a PDF to extract specific page ranges, and Compress a PDF to reduce its file size — all without uploading files to any server.
Tool Modes
Merge PDFs
Combine two or more PDF files into one. Drag to reorder pages before merging.
Split PDF
Extract a specific page range from a PDF. Perfect for pulling out chapters or sections.
Compress PDF
Reduce PDF file size for easier sharing via email or uploading to web forms with size limits.
Common Use Cases
- Combine multiple scanned pages or documents into a single PDF
- Extract a specific chapter or section from a large PDF report
- Compress a PDF before attaching it to an email
- Combine invoices, receipts, or statements into one PDF for filing
- Remove unwanted pages from a PDF by splitting and saving only the pages you need
- Merge presentation slides from multiple files into a single deck
Technical Specifications
| Parameter | Details |
|---|---|
| Max file size | 100 MB per PDF |
| Input format | PDF only |
| Output format | |
| Merge limit | No hard limit (browser memory dependent) |
| Processing | Client-side via PDF-lib |
Frequently Asked Questions
1. Are my PDFs uploaded to a server?
No. All PDF processing happens 100% in your browser using the PDF-lib JavaScript library. Your files never leave your device.
2. Can I merge password-protected PDFs?
Not at this time. Password-protected PDFs cannot be read or processed. Remove the password protection first using dedicated PDF tools.
3. How much does PDF compression reduce file size?
Results vary depending on the PDF content. Image-heavy PDFs can typically be reduced by 30-60%. Text-only PDFs have limited room for compression.