How It Works
MergePDF processes your files entirely inside your browser — no server, no uploads, no accounts.
01
Upload Your PDFs
Drag and drop any number of PDF files onto the upload zone, or click to select them from your computer. You can add files from multiple locations.
02
Reorder If Needed
See all your files listed as cards with page count and thumbnail preview. Drag any card up or down to set the exact order you want in the final merged PDF.
03
Merge & Download
Click the Merge button. Our tool uses pdf-lib to combine the files completely within your browser memory. The finished PDF is ready to download in seconds — no server ever sees your data.