Secure PDF Merger

Combine Documents Privately

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Select PDF Files

Click to browse or drag & drop (Max 20MB)

100% Private: Files processed in browser. No server upload.

Why merge PDFs client-side?

Most online PDF tools require you to upload your sensitive documents to their servers. This creates a privacy risk. ToolSurf PDF Merger uses powerful WebAssembly technology (pdf-lib) to process your files directly in your browser. Your data never leaves your device.

How to combine PDF files

  1. Click the upload box to select multiple PDF documents.
  2. Verify the order of files in the list.
  3. Click Merge & Download to generate your new document instantly.

Features

  • Privacy First: Zero server uploads.
  • Instant Speed: No waiting for uploads/downloads.
  • Universal: Works on Windows, Mac, Linux, and Mobile.

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