Combine multiple PDF files into a single document directly in your browser. Drag and drop to reorder pages and files. Fast, free, and completely private.
Privacy & Technical Specifications
100% In-Browser: Your files never leave your device and are never uploaded to any server.
Browser Sandboxing: Built on modern MDN Web APIs with zero server-side storage.
Maximum File Size: 100 MB per file
Supported Formats: application/pdf
Batch Limit: Up to 50 files at once
Standards Compliance: Processed in accordance with ISO 32000-2 (PDF 2.0) document architecture standards.
Cost: Free and unlimited without accounts
How to Use Merge PDF
Select or drag and drop multiple PDF files into the upload area.
Drag the files in the list to arrange them in your desired order.
Click the "Merge PDFs" button.
Download your combined PDF document.
Frequently Asked Questions
Is my data secure?
Yes. The merging process happens entirely in your web browser. Your PDF files are never uploaded to any server.
How do I change the order of the merged PDF?
After selecting your files, you can simply drag and drop them in the list to rearrange their order before clicking Merge.
Is there a limit to how many PDFs I can merge?
You can merge up to 50 PDF files at once, with a maximum file size of 100MB per file.