Merge PDF — Free Online

Combine multiple PDF files into one document

Free, fast, and runs entirely in your browser — no signup, no upload to a server.

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Sources we checked for Merge PDF

• pdf-lib documentation — The open-source library powering our client-side PDF editing.
• Adobe — PDF standards overview — Background on PDF/A, PDF/X and related profiles.
• DigiLocker — India's government document wallet, which accepts PDF uploads.
• W3C standards — The open specifications behind the web platform.