PDF Merge & Split
Merge multiple PDF files into one or split a PDF into individual pages. Free, private, and 100% client-side. No uploads, no server processing.
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What is PDF Merge & Split?
A client-side PDF merge and split tool that uses pdf-lib to combine multiple PDFs into one document or split a PDF into individual pages — all in your browser, with zero server uploads.
Key Benefits
- 100% client-side — files never leave your browser
- Merge unlimited PDFs into a single document
- Split by individual pages or custom page ranges
- Reorder files before merging with drag-and-drop
- No file size limits (limited only by your device memory)
- No watermarks, no registration, completely free
Common Use Cases
- •Combining multiple reports into a single document
- •Extracting specific pages from a large PDF
- •Splitting a scanned document into individual pages
- •Merging contracts and appendices for submission
- •Separating chapters from a combined PDF textbook
How to Merge and Split PDF Files
- Choose your mode: Select the Merge tab to combine PDFs, or the Split tab to separate pages.
- Upload your files: Drag and drop PDF files into the upload area. For merge, add multiple files. For split, add one file.
- Configure options: For merge: reorder files as needed. For split: choose "each page" or "custom ranges".
- Process and download: Click the Merge or Split button. Your processed PDF downloads automatically.
Key Features
- Merge unlimited PDF files into one document
- Split PDF by individual pages or custom ranges
- Drag-and-drop file reordering
- 100% client-side — files never leave your browser
- No file size limits (limited only by device memory)
- Progress indicator for large files
- No watermarks, no registration required
- Powered by pdf-lib — robust PDF manipulation
Frequently Asked Questions
Are my PDF files uploaded to a server?
No. All processing happens in your browser using the pdf-lib library. Your files never leave your device.
Is there a file size limit?
There is no artificial limit. The only constraint is your device's available memory. Very large PDFs (500MB+) may take longer to process.
How many PDFs can I merge?
There is no limit on the number of PDFs you can merge. However, the merged file size depends on your available memory.
Can I split a password-protected PDF?
Currently, password-protected PDFs are not supported. Please remove the password first before using this tool.
Does it work on mobile?
Yes! The tool works on mobile browsers, though processing large files may be slower on mobile devices.