Merge PDF
Combine multiple PDF files into one document in your exact preferred order. 100% processed locally on your machine.
Drop your PDF files here
or browse to select multiple files
Select single or multiple files · Processed 100% locally
How to Use Merge PDF
Select Files
Choose or drag and drop 2 or more PDF documents into the upload area.
Arrange Order
Use the up and down arrow buttons to arrange documents in your exact sequence.
Merge & Download
Click Merge PDFs to combine pages instantly and download your single PDF.
Capabilities & Features
- •Merge unlimited PDF documents
- •Interactive page-count and file-size preview
- •Reorder files before merging
- •Preserves original document formatting and outlines
Important Notes & Limitations
- •Encrypted PDFs must be unlocked with their password before merging.
- •Extremely large files (>500MB) depend on available system RAM.
Client-Side Privacy Guarantee
When using Merge PDF, your files, extracted text, and document metadata are processed exclusively inside your browser using client-side JavaScript, WebAssembly, and native Web Crypto APIs. Your document data is never sent to our servers or any cloud service. Once you close this tab or click clear, volatile memory is automatically released.
Frequently Asked Questions
Is there a limit on how many files I can merge?
No arbitrary software limits. Since processing happens inside your browser RAM, you can merge as many files as your device memory allows.
Are my uploaded PDFs sent to any server?
Never. All merging happens directly in your browser using WebAssembly. Files never leave your computer.
Explore More PDF Tools
All utilities run 100% locally in your browser.