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How to Merge PDF Files Safely Offline

Need to combine multiple PDF documents into a single file but concerned about privacy? Amendly PDF Studio is a 100% client-side PDF merger. Your documents never upload to any remote server; they are stitched together locally inside your browser cache.

📂 Reorder and Combine Easily

Drag and drop your PDF files to arrange them in the exact order you want. Extract specific pages or stitch entire files together in seconds with our simple user interface.

🚀 Blazing Fast Performance

Because there is no upload or download delay, your file merging completes instantly. Even large multi-megabyte PDFs are compiled within milliseconds.

Frequently Asked Questions — Merging PDFs

Is there a limit on file size or page count?

No. Since all operations run locally on your system using WebAssembly, there are no artificial limits. The speed depends only on your computer's RAM and processing power.

Do you keep a copy of my combined document?

Absolutely not. Our server only hosts the static HTML and JS files. The merging logic runs inside your browser sandbox. We never see, copy, or save your documents.

How secure is this PDF merger compared to others?

Standard PDF editors send your files to remote cloud servers, which poses a compliance risk for business or private documentation. Amendly guarantees 100% privacy by keeping the file data offline on your machine.