MARZPDF Merge
Combine multiple PDFs into one file, entirely in your browser.
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About this tool
Upload two or more PDF files, arrange them in the order you want, and merge them into a single PDF — all processed locally, nothing is uploaded to a server.
How to use
- Add two or more PDF files.
- Drag to reorder them if needed.
- Click merge and download the combined PDF.
FAQ
Are my files uploaded anywhere?
No. Merging happens locally in your browser using JavaScript — your files never leave your device.
Is there a file size or count limit?
No hard limit is enforced, but very large or numerous files are limited by your browser's available memory.