Merge multiple PDF files 100% locally in your browser. No uploads, absolute privacy.
A PDF Merger combines two or more separate PDF files into a single unified document. This is essential for compiling reports, combining scanned documents, merging invoices for record-keeping, or assembling multi-section documents. Traditional merging tools require expensive software licenses like Adobe Acrobat Pro or demand that you upload sensitive documents to cloud servers. Our browser-based merger eliminates both barriers—it is completely free and processes all files locally on your device using the pdf-lib JavaScript library.
Privacy is the primary advantage. When you upload PDFs to online merging services, your documents traverse the internet and sit on third-party servers—even if temporarily. This is unacceptable for confidential documents like financial statements, legal contracts, or medical records. Our merger reads, manipulates, and combines PDF files entirely within your browser memory. The drag-and-drop interface lets you easily reorder documents before merging, ensuring pages appear in the correct sequence.
There is no hard limit. Since processing happens in your browser memory, very large merges (50+ large documents) may be limited by your device's available RAM. For typical use—merging 2-10 documents—the tool handles it instantly.
Yes. Our tool combines PDFs at the binary level without re-rendering. Text remains searchable, vector graphics stay crisp, and images retain their original quality.
Currently, the tool cannot process encrypted PDFs. You would need to remove password protection first using the original application.
No. Your PDF files are processed entirely within your browser. They are read into memory, merged locally, and the result is generated for download. No files are transmitted over the internet.