PDF Merge
Merge multiple PDF files into a single PDF online — free and secure.
How to Use PDF Merge
- 1
Upload the PDF files you want to merge — drag and drop or click to browse.
- 2
Drag and drop files in the list to arrange them in the desired order.
- 3
Click "Merge PDFs" to combine them.
- 4
Preview the page count and file size of the merged PDF.
- 5
Click "Download Merged PDF" to save the combined file.
About PDF Merge
Combine multiple PDF files into a single, organized document with our free PDF Merge tool. Whether you're assembling a report from multiple chapters, combining invoices, or merging scanned documents, this tool handles it quickly and securely — entirely in your browser.
Drag and reorder the PDFs before merging to control the final page order. Upload up to 20 PDF files at once (up to 50MB each). The merged PDF is assembled client-side using the pdf-lib JavaScript library, meaning your documents never leave your device — essential for sensitive financial or legal documents.
The output PDF maintains the original quality, fonts, and formatting of all input PDFs. No watermarks are added to merged PDFs, unlike many online alternatives.