Merge PDF
Combine two or more PDF files into a single document. Drag files in, arrange the order, merge — all locally in your browser.
How to use
- Drop two or more PDF files into the box.
- Use the ▲ ▼ buttons to arrange the merge order.
- Click "Merge PDFs" and download the combined file.
Frequently asked questions
Is it safe to merge confidential PDFs here?
Yes. Unlike most online PDF sites, this tool never uploads your files — merging happens in your browser with the open-source pdf-lib library. Contracts, invoices and medical documents stay on your device.
Is there a limit on file count or size?
No fixed limit. Merging is limited only by your device memory; combining dozens of normal PDFs works fine on any modern computer or phone.
Will bookmarks and form fields survive the merge?
All page content is preserved exactly. Complex interactive features (bookmarks, some form fields) may be flattened, which is standard behaviour for client-side merging.
Can I change the page order inside a PDF?
This tool orders whole files. To reorder or remove individual pages, use our Split PDF tool to extract the pages you need, then merge the results.