Merge PDF
Combine multiple PDF files into one document. Drag to reorder pages.
Drop PDF files here or click to upload
Multiple files supported
How to use
- 1
Upload your PDF files
Click the upload area or drag and drop multiple PDF files. You can add as many documents as you need to combine.
- 2
Reorder the files
Drag files up or down to set the order they will appear in the merged PDF. The first file in the list becomes the first pages.
- 3
Merge and download
Click Merge PDF to combine all files into one document. Your merged PDF downloads instantly — nothing is sent to a server.
Frequently Asked Questions
Yes. All processing happens in your browser using pdf-lib. Your files never leave your device and are not uploaded to any server.
There is no hard limit, but very large files or dozens of documents may slow down your browser depending on available memory.
Yes. Merging combines the original page content without re-compressing images, so quality stays the same as your source files.
Password-protected PDFs must be unlocked before merging. This tool does not support encrypted files.