How to Use the Merge PDFs
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1
Upload two or more PDF files.
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2
Drag or use the up/down arrows to arrange the files in your desired reading order.
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3
Click "Merge PDFs" to assemble the combined document.
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4
Download your merged PDF file instantly.
Practical Example & Use Case
Common Real-World Scenario
Merging an executive summary, main proposal document, and appendix files into a single unified client deliverable.
Technical Notes & Limitations
Browser Engine Architecture
Encrypted or password-protected PDFs must be unlocked before merging.
Frequently Asked Questions
Are my confidential PDF documents uploaded anywhere?
Never. Processing is handled 100% inside your browser using the pdf-lib WebAssembly/JS engine.
Is there a limit on how many PDFs I can merge?
You can merge dozens of files as long as your browser memory allows (recommended under 100 MB total).