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PDF Merge

Combine multiple PDF files into a single document entirely in your browser. Your files never leave your device.

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Drag & drop PDF files here, or click to browse

Select 2 or more PDF documents to merge into one file

Files: 0 | Total Pages: 0 | Combined Size: -- MB

What Is a Client-Side PDF Merge Tool?

A Client-Side PDF Merge Tool combines multiple PDF documents into a single consolidated PDF file directly inside your browser memory using WebAssembly and ES6 stream processing. Unlike conventional online PDF tools, your files are never uploaded to an external server.

Why 100% Client-Side PDF Merging Matters for Privacy

  • Zero Data Uploads: Financial statements, medical records, legal contracts, and personal IDs remain 100% on your device.
  • Offline Functionality: Continues to process PDF files locally even without an active internet connection.
  • No File Size Restrictions: Fast merging performance constrained only by your hardware RAM.

How to Merge PDF Files

  1. Drag & drop 2 or more PDF documents into the drop zone.
  2. Use the Up / Down buttons to arrange your PDFs in the desired sequence.
  3. Click Merge PDFs to combine all pages into a new document.
  4. Click Download Merged PDF to save your merged file instantly.

Frequently Asked Questions (FAQ)

Are my PDF documents uploaded to a cloud server?

No. The entire PDF merging engine runs 100% locally in your web browser. Zero bytes leave your device.

Can I reorder PDF files before merging?

Yes. Use the Up & Down arrow buttons on each item to customize the precise sequence of your PDF pages.

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