Merge PDF Files
Combine several PDFs into a single document. Drag to add, reorder, and merge — with no watermark and no upload. Everything happens in your browser, so even confidential PDFs never leave your device.
📁 or drag & drop
Add two or more — they merge in the order shown
How to merge PDFs
- Add two or more PDF files.
- Reorder them with the up/down arrows if needed.
- Click Merge PDFs and your combined file downloads instantly.
Powered by pdf-lib running locally. No file is ever uploaded, and the output carries no watermark.
Why merge PDFs?
Documents often arrive in pieces: a contract as several scanned pages, chapters exported separately, invoices saved one per file, or forms and their attachments. Combining them into a single PDF makes the whole set easier to store, email, print, and archive. One file also preserves the intended order, so whoever opens it sees the pages exactly as you arranged them.
Common uses
- Business: merge an invoice, receipt, and terms into one file to send a client.
- Legal & admin: combine a signed contract's pages back into a single document.
- School & work: assemble a report, appendix, and cover page in order.
- Personal: gather scanned records — warranties, receipts, manuals — into one archive.
Tips
- Set the order first. Use the up/down arrows before merging; the final PDF follows the on-screen order.
- Have images instead of PDFs? Turn them into a PDF with our Image to PDF converter, then merge.
- Large result? Scanned pages can be heavy; compress source images before creating PDFs to keep the merged file manageable.
Private and watermark-free
Most free "merge PDF" sites upload your documents to their servers — a real risk for contracts, IDs, and financial paperwork. This tool merges everything in your browser with pdf-lib, so your files never leave your device. The result is clean: no watermark, no branding, and no artificial page limit. For a step-by-step walkthrough, see our guide on how to merge PDF files for free.
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Frequently asked questions
Are my PDFs uploaded anywhere?
No. Merging happens entirely in your browser with pdf-lib. Your documents never touch a server.
Is there a watermark or page limit?
No watermark and no artificial limit. Very large files depend only on your device's memory.
Can I change the order of files?
Yes — use the up/down arrows next to each file before merging.