Merge PDF
PopularCombine PDFs into one, in any order.
Runs in your browserIn: PDFOut: PDF
Runs in your browser — your file never leaves your device.
About this tool
Combine multiple PDF files into a single document. Drag to reorder, then export — all in your browser.
This tool processes files entirely on your device. Nothing is uploaded to a server.
How it works
- 1Add two or more PDF files.
- 2Drag pages or files into the order you want.
- 3Merge and download your combined PDF.
What this tool can do
- Ordering
- Drag files to reorder before merging, or use each row's move buttons — the output follows top to bottom.
Common questions
Is my file uploaded when I use Merge PDF?
No. This tool runs entirely in your browser with WebAssembly and browser APIs — the file stays on your device from start to finish.
Does Merge PDF work offline?
Not fully — the page and its processing engine load over the network, with the engine fetched when you first use the tool. After that, the processing itself runs entirely on your device, and a dropped connection does not interrupt work in progress.
How large can my file be?
Up to 100 MB per file.
Related tools
All toolsNo sign-up required. Your files stay on your device until you run a tool.