Merge PDF — Combine Files in Seconds, Free & No Limits
Merge multiple PDF files into one document. Drag and drop to reorder pages. Fast processing, no file size limits for basic use. Free, no registration.
Key Features
- Files deleted within 1 hour after processing
- Encrypted file transfer via HTTPS
- No watermarks on merged PDFs
- No registration needed
- Open-source pdf-lib library used
How It Works
- PDF merging uses the pdf-lib library, an open-source PDF manipulation tool
- Files are combined in the order you specify with page-level control
- Merged output preserves original page dimensions and content
- Processing happens on our server with automatic file cleanup within 1 hour
- Supports standard PDF formats (PDF 1.0 through 2.0)
Frequently Asked Questions
How many PDFs can I merge at once?
You can merge multiple PDF files in a single operation. For free users, we recommend keeping total combined size under 50MB for best performance.
Will the merged PDF keep the original formatting?
Yes. Each page retains its original dimensions, fonts, images, and layout. We combine pages without modifying their content.
Can I reorder pages before merging?
Yes. You can drag and drop files to set the order before merging them into the final document.
Are my files safe during the merge process?
Files are transferred via HTTPS encryption and automatically deleted from our servers within 1 hour after processing.