Merge PDF Files

Merge PDFs into one document with one click. Ideal for legal documents, business proposals, and professional presentations with precision.

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100% Privacy-Friendly Warranty
Our tools are 100% privacy-friendly, meaning your PDFs don't go to any server for processing. Everything happens on your device.
All other tools out there keep a copy of your PDFs on their server for processing. You can't be 100% sure that your PDFs will be deleted afterwards.
But if you use this tool, I guarantee that your PDFs never leave your computer. They stay on your device and are processed there. Hence, it's 100% privacy-friendly.
Use our tools with peace of mind.
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Frequently Asked Questions

How do I enable multiple downloads?

If the total zip file size exceeds the browser limit, the file will be downloaded in parts. To do this, you need to enable multiple downloads in your browser.

For Chrome: Go to Settings > Privacy and Security > Permissions > Additional Permissions > Automatic Downloads, and allow pdftoolslab.com to automatically download multiple files.

For other browsers, please search online for instructions on enabling this setting.

How can I make PDF processing faster?

To optimize PDF processing speed:

1. Keep your browser window open and active throughout the processing. Avoid minimizing it.

2. Stay on the processing tab, or keep it open in a side window. Switching to another browser tab may pause processing, as browsers limit resources for inactive tabs.

3. If the tool uses AI, ensure you have an internet connection to initialize AI models, even though the actual PDF processing doesn't require it.

4. If possible, use a dedicated monitor or split your screen to keep the processing tab visible while working on other tasks.

5. Don't put your computer into sleep mode during processing. This may pause or slow down the processing.

By following these steps, you can help maintain processing speed and avoid unnecessary interruptions.

How can I combine PDF documents at once?

After you have chosen multiple PDF files, a 'Start Merging PDFs' button will appear. Simply click on it to combine all selected files into one PDF.

Is signing up required to use the PDF merger?

No sign-up is required. Merge your PDF files instantly and keep full control of your documents. Your PDF files are your property and remain on your machine.

How does this PDF merger tool respect my privacy?

Your PDF files stay on your machine; they don't go to any server for merging. The process occurs solely within your browser.

Where is the application of PDF merging?

Document Management: Combine multiple reports, contracts, or presentations into a single file.

Academic Research: Merge research papers, articles, and references into one comprehensive document.

Business Operations: Consolidate invoices, receipts, and financial documents for easier management.

Legal Documentation: Combine case files, contracts, and legal briefs into organized single documents.

Portfolio Creation: Merge multiple project files, certificates, and work samples into a professional portfolio.

How many files can my computer process in parallel?

Your computer hardware can process 1 files in parallel.