Merge PDF
Combine multiple PDF files into a single document — drag to set the order, then download. Runs entirely in your browser; your files are never uploaded.
Input
Add two or more PDFs. Drag the arrows to set the order — pages are combined top to bottom.
Merged PDF
Add two or more PDFs, arrange them in order, and press Merge PDF. The combined file is built in your browser — download it when you're ready.
Guides
Merge PDF combines two or more PDF files into a single document, right in your browser. Add your files, drag them into the order you want, and download one merged PDF — no signup, no watermark, and nothing ever leaves your device.
How to use it
- Drop or browse for two or more PDF files.
- Use the up/down arrows next to each file to set the order. Pages are combined from top to bottom.
- Press Merge PDF. The combined file downloads automatically as
merged.pdf.
Why merge PDFs in the browser?
Most online PDF mergers upload your documents to a server. This one does the whole job locally using the pdf-lib library, so contracts, statements, scans and anything else private stay on your computer. Because there's no upload or download round-trip, merging is also near-instant even for large files.
Does the page order match my file order?
Yes. Files merge in exactly the order shown in the list, and every page of each file is kept. Reorder the list before merging to change the sequence.
Is there a file count or size limit?
There's no fixed limit — merging runs in your browser, so the practical ceiling is your device's available memory. Very large scanned PDFs (hundreds of megabytes) may be slow on low-memory devices.
What if a PDF is password-protected?
Files with an owner lock but no open password usually merge fine. A PDF that requires a password to open must be unlocked first — use the Unlock PDF tool, then merge the result.
Your files are processed entirely on your device and are never uploaded.