Merge and secure your PDFs
in a matter of seconds.
Organize your documents, generate an automatic index, and seal your final file with a cryptographic integrity certificate. All without your files ever leaving your computer.
How does it work?
An intuitive, fast, and 100% secure process directly in your browser. No slow upload waiting times or downloading issues.
Upload your files
Drag and drop all the PDF documents you need to merge. You can add dozens of files with no file size limit.
Organize your way
Rearrange the order by dragging the files with your mouse. Decide if you want to include an index and the final certificate.
Generate and download
Click generate and get your newly consolidated document instantly. Scan the QR code to validate its integrity.
Secure processing powered by standard technologies
Designed for privacy and efficiency
Unlike other online tools, PDF Merge Pro processes everything on your own device. Your confidential documents never travel across the internet.
Absolute Privacy
We don’t upload your files to any cloud server. The entire merging process happens locally in your web browser’s memory.
Integrity Seal
We generate a final certificate with a SHA-256 Hash and a QR code. Prove to any entity that your document has not been tampered with.
Automatic Index
Forget manual page numbering. The tool automatically creates a table of contents at the beginning and numbers all pages of the resulting file.
Frequently Asked Questions
Can anyone else see my documents?
No. The magic of PDF Merge Pro is that it uses modern web technologies to process files directly on your computer or smartphone. Your PDFs are never sent over the internet, ensuring 100% privacy.
What is the final integrity certificate for?
The certificate prints a unique “Cryptographic Hash” (SHA-256) of your document. If someone tries to alter the PDF, delete a page, or change a letter, the fingerprint will change entirely. This provides invaluable technical credibility for official procedures, applications, or legal purposes.
Is there a limit to the number of files I can merge?
The limit depends solely on your device’s RAM, as the entire process is local. You can easily merge dozens of heavy files in just a few seconds.
Terms of Use & Disclaimer
By using PDF Merge Pro, you acknowledge that this free utility is provided “as is” and is used entirely at your own risk. Scalar Pivot and its creators assume no responsibility or liability for any errors, data loss, legal implications, or damages resulting from the use of this tool.
You agree to use this service exclusively for lawful purposes. We reserve the right to modify, suspend, or permanently disable this tool at any time without prior notice or obligation.