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Merge PDF Files

Combine multiple PDFs into one document securely in your browser. No file uploads. Free forever.

LOCAL · FREE · SECURE · v2026.1

Drop document here

or click to browse local files

Max 200MB · Offline Sandbox

Merge PDF Documents Locally Instantly

Combining contracts, tax filings, or legal bundles online shouldn't mean giving third-party servers copies of your most vital files. Docset aggregates pages client-side.

How to Merge PDFs Locally in 3 Steps

1

1. Load Documents

Select and load multiple PDF files into the drag-and-drop workspace above. Files are read in memory sequence directly on your machine.

2

2. Check Sort Order

Verify your document order. Our engine merges them sequentially in the exact list order you specify.

3

3. Combine and Save

Click "Process Document Securely". The browser merges pages using pdf-lib and generates an instant download.

Secure Client-Side Document Aggregation and Compilation

Online PDF mergers pose severe information security risks, as merged sheets usually contain confidential financial ledgers or operational blueprints. Storing them temporarily on a remote server exposes businesses to potential data leaks.

Docset eliminates this risk completely. Our client-side page-joining engine processes raw array buffers directly inside Svelte execution context. Your files are combined in-memory and downloaded instantly with zero network roundtrips.

FREQUENTLY ASKED

📚 Academic & Industry Citations

This local document compliance tool is built in conformance with the following official standards, privacy guidelines, and technical specifications:

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Privacy & Security Disclaimer

100% Private & Local

This tool runs 100% locally in your web browser sandbox using client-side WebAssembly technology. Your files and data are NEVER uploaded to any servers. All computations occur strictly inside your own device memory pool.