Merge PDF
Combine multiple PDFs into one file.
Drop PDF files here, or click to browse
Processed entirely in your browser — nothing is uploaded
About the Merge PDF
Combine several PDF files into one document, in exactly the order you want. The Merge PDF tool assembles your files locally with pdf-lib — the PDFs are read straight from your device and never uploaded, so even confidential contracts and financial statements stay private. Drag files in, arrange them top-to-bottom, and download a single merged PDF.
How to use it
- 1Drop in two or more PDF files, or click to browse and select them.
- 2Reorder the list with the up/down arrows — pages are combined from top to bottom.
- 3Remove any file you added by mistake, or clear the whole list to start over.
- 4Click Merge to build the combined PDF and download it instantly.
Why merge PDFs in the browser?
Most online PDF mergers upload your files to a server, process them there, and email or link you the result — which means your documents sit on someone else's disk. This tool does the whole job on your own machine using WebAssembly-free JavaScript, so nothing leaves the browser tab. It works offline once the page has loaded, there are no file-count or watermark limits, and the output keeps the original page quality because pages are copied, not re-rendered.
Common uses
- Joining a signed cover letter, résumé and portfolio into one file to send to an employer.
- Combining monthly invoices or receipts into a single PDF for expense reports.
- Merging scanned pages that came out as separate files back into one document.
Frequently asked questions
- Are my PDFs uploaded anywhere?
- No. Merging happens entirely in your browser with pdf-lib — the files are read from your device and the result is generated locally. Nothing is sent to a server.
- Is there a limit on how many PDFs I can merge?
- There's no fixed limit. Very large documents are only bounded by your device's memory, since everything is processed in the browser.
- Will merging reduce the quality of my pages?
- No. Pages are copied as-is into the new document, so text stays selectable and images keep their original resolution.