Merge PDF — Combine Files into One

Merge PDF — how it works

Combine multiple PDF files into a single document, right in your browser. Drag to reorder. Your PDFs are never uploaded to any server.

Why FileZap is different

• Truly private. Unlike most online tools that upload your files to a server, FileZap processes everything inside your browser. Your files never leave your device.
• Instant. No upload/download round-trip and no processing queue — results appear the moment you drop a file.
• No catch. No sign-up, no email, no watermark, no daily limit.

FAQ

How do I merge PDFs?

Drop two or more PDF files, drag them into the order you want, then click Merge. You get one combined PDF.

Are my PDFs uploaded anywhere?

No. Merging happens entirely in your browser using your device — nothing is sent to a server.

Is there a file limit?

No hard limit; very large PDFs just take a little longer since it all runs locally.