Merge PDF files
Combine two or more PDFs into a single document. Drag the files into the order you want and download one merged PDF.
How it works
How to merge PDF files
- 1
Select or drop the PDF files you want to combine.
- 2
Drag the files into the right order.
- 3
Click Merge PDF and download your combined document.
Features
Why use our Merge PDF tool
Any number of files
Merge as many PDFs as your device's memory allows — no artificial limits.
Keeps quality
Pages are copied exactly as they are. Nothing is re-compressed or rasterized.
Private by design
Merging runs locally in your browser, so confidential documents stay on your computer.
Guide
About Merge PDF
Merging is the quickest way to turn a pile of separate documents — invoices, scanned receipts, chapters or signed pages — into one tidy file you can send or archive. The merged PDF contains every page of every file, in exactly the order you choose.
Pages are copied without being re-rendered, so text stays selectable and searchable, vector graphics stay sharp and photos keep their original resolution. Bookmarks from the individual files are not carried over; add page numbers or a header afterwards if you need to navigate a long result.
Tips for best results
- Use “Sort A–Z” when your files are numbered (01, 02, 03…) to put them in order instantly.
- Need only some pages of a file? Extract them first, then merge the smaller files.
- Very large merged files can be shrunk afterwards with Compress PDF.
How your file stays on your device
Merge PDF runs entirely inside your web browser. When you choose a file, your browser reads it into memory on your own device, a background Web Worker does the processing, and the result is handed straight back to you as a download. There is no upload step, no server that receives your document and no copy kept anywhere — close the tab and it is gone. That makes it safe for contracts, IDs, medical letters and anything else you would rather not send to a stranger's server. How in-browser processing works
FAQ
Merge PDF: frequently asked questions
Is there a limit to how many PDFs I can merge?
There is no fixed limit. Very large jobs are limited only by your device's memory.
Will the merged PDF keep text selectable?
Yes. Pages are copied as-is, so text, vector graphics and images keep their original quality.
Are my files uploaded to a server?
No. Merging happens entirely inside your browser using JavaScript and WebAssembly. Your files never leave your device, and nothing is stored after you close the tab.
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