Merge PDF
UPLOAD & ORDER FILES
MERGED DOCUMENT
Upload at least 2 PDF files and click "Merge PDFs" to generate combined document.
PDF Academy
How Online PDF Merging Works Safely
Combining reports, resumes, or certificates doesn't mean exposing your files to third-party servers. Learn how serverless PDF tools keep your data private.
Completely Private & Local
Most free online PDF tools require you to upload your files to their servers, where they are parsed, stored, and potentially indexed.
Our tool works entirely in your browser using WebAssembly and Javascript APIs via the pdf-lib library. The files never leave your computer, ensuring absolute privacy.
Zero Uploads
Your documents are loaded directly from your storage device and processed locally in memory.
Frequently Asked Questions (FAQ)
Is there a file size limit?
Since merging happens in your browser using your local device's RAM, there is no artificial file size limit.
Does merging ruin document formatting?
No. We copy the raw page streams, interactive forms, fonts, and vector elements. The layouts remain identical.