PDF ToolsUpdated
Merge PDF
Merge multiple PDF files into one document online for free. Combine PDFs instantly without uploading to any server.
Add PDF
Upload multiple PDFs to merge them into one
Your Privacy Matters
- All processing happens in your browser — no uploads
- Your files never leave your device
- No data stored, logged, or shared with third parties
- Works offline after initial page load
Features
Secure processing — your documents never leave your device
High-quality output preserving original formatting
Support for multiple PDF files simultaneously
Fast processing optimized for large documents
How to Use Merge PDF
1
Open the Tool
Navigate to the Merge PDF page to get started.
2
Provide Input
Upload your file, paste your content, or enter your data into the tool.
3
Configure Options
Adjust any available settings to customize the output to your needs.
4
Get Results
Process your data and download, copy, or save the result instantly.
Frequently Asked Questions
How many PDFs can I merge?▼
You can merge as many PDFs as needed. All pages will be combined into a single document in the order you upload them.
Is the file quality preserved?▼
Yes. pdf-lib preserves the original content, formatting, and structure of each PDF during the merge process.
Are my files uploaded?▼
No. All processing is done client-side in your browser. Your documents never leave your device.