Merging PDFs is one of those tasks that should be trivial and usually is not. Most tools want you to upload every document to a server first, which is a strange thing to accept when the files are contracts, bank statements, medical records or anything else you would not email to a stranger.
This merger combines your PDFs in the order you add them and hands back a single document, without any of them leaving your browser. Nothing is uploaded, nothing is stored, and there is no account to create first.
How to convert your file to the new format
- Add your PDFs. Drag in two or more files, or click to browse and select several at once. They will be merged in the order they appear in the list.
- Check the order. The list shows the order the documents will be combined in. This is the order you selected them, so add them in the sequence you want them to appear.
- Merge and download. Press Merge PDFs. The combined document downloads immediately as a single file.
Why merging locally is worth caring about
The documents people merge are rarely trivial. It is a lease and its addendum, a passport scan and a visa form, a set of invoices for an accountant, a stack of medical letters. Uploading those to a free web tool means handing a complete copy to a company whose business model you have not read.
Doing it in the browser removes the question entirely. There is no copy to retain, no retention policy to trust and no breach that could expose it, because the file never went anywhere.
Frequently asked questions
- Are my documents uploaded anywhere?
- No. The merge runs in your browser using pdf-lib. Each file is read into memory on your own machine, the pages are assembled locally, and the result is handed back as a download. Nothing crosses the network, which matters more here than for most tools because the documents people merge tend to be the sensitive ones.
- What order will the pages be in?
- The order you added the files. The first document's pages come first, then the second document's, and so on. If you need a different order, add the files in that order.
- How many PDFs can I merge at once?
- There is no limit we impose. Since nothing is uploaded there is no size cap and no per-file charge; the practical ceiling is your device's memory, and merging dozens of ordinary documents is not a problem.
- Does merging reduce quality?
- No. The pages are copied across as they are, not re-rendered or re-compressed. Text stays selectable, images keep their original resolution, and the merged file is essentially the sum of its inputs.
- Will bookmarks, forms and links survive?
- Page content, text and images copy across faithfully. Interactive extras such as form fields, bookmarks and annotations may not carry over, because they live in document-level structures rather than on the pages themselves. If a form's fields matter, check the merged file before discarding the originals.