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Merge PDF Documents

Combine multiple PDF documents into a single file in your preferred order locally.

100% Client-Side (Secure)

Upload PDF files

Drag & drop or select multiple PDF files to combine

Export Configuration
Total Pages: 0
Combined Size: 0 KB

Frequently Asked Questions

Quick direct-answer guides about using this utility tool locally and securely.

Is there a limit on the number of PDFs I can merge?
No. Since the merging process is run 100% locally in your browser memory, there are no artificial file upload limits. You can combine as many files as your device RAM can handle.
Will my merged PDFs have watermarks?
No. All tools in PDF Tools are completely free and do not add any watermarks or branding to your documents.
Is it safe to merge sensitive files like contracts or bank statements?
Absolutely. Your files never leave your computer. The combining engine runs entirely client-side using Javascript, meaning your sensitive documents are 100% private.

How It Works

Usage pipeline & step-by-step guide

1. Upload/Input
2. Local Process
3. Save Output

100% Client-Side Processing Your files never touch our servers. All operations happen locally in your web browser for ultimate privacy and speed.

Cookie Preferences

We use cookies to enhance your experience. By clicking "Accept All", you agree to the storing of cookies on your device to analyze site usage. All processing tools run strictly client-side.