Merge PDF files
Merging PDF files usually means installing desktop software or uploading private documents to some unknown server. DMI's merge tool works differently: drag in two or more PDFs, reorder them by dragging, and click merge. Everything runs locally using your browser's own processing power, so the files never leave your device. There is no file-count cap beyond your device's memory, no watermark added to the result, and no account required. Whether you are combining scanned contracts, class notes, or a stack of invoices into a single document, the merged PDF downloads instantly the moment processing finishes, ready to share, print, or archive.
How it works
- Drag and drop two or more PDF files into the upload area.
- Reorder the files by dragging them into the sequence you want.
- Click Merge to download your combined PDF instantly.
Frequently asked questions
Is this PDF merger free to use?
Yes, merging PDFs with DMI is completely free, with no signup, watermarks, or hidden limits. Merge as many files as you like, as often as you like the tool stays free for casual and heavy use alike, unlike many competitors that gate large or repeated merges behind a paywall.
Are my PDF files private and safe?
Yes. Merge PDF runs entirely in your browser, so your files are never uploaded to a server. We log usage metadata, including your IP address, tool name, filename, and file size, for up to 12 months to help prevent abuse, but file contents are never stored or seen by us.
Is there a limit on how many files I can merge?
There is no fixed file-count limit. Because merging happens in your browser, the practical ceiling is your device's available memory rather than a server-imposed cap, so most users can combine dozens of PDFs, even large scanned documents, without any trouble.