Merge PDF
Join several PDFs into one, in the order you choose.
Runs in your browser. Nothing is uploaded.Your files are processed by your own browser and never sent to a server. You can check: open your browser's network tab, convert a file, and you will not see an upload. The site also works with your connection turned off once the page has loaded.
How it works
- Drop in the PDFs you want joined. Add as many as you need.
- Put them in the right order with the arrows — the numbers show the final order.
- Press merge. Your browser builds the combined file on your own machine.
- The download starts on its own.
About this tool
Drop in as many PDFs as you like, drag them into order, and download a single file. The documents never leave your device, which is the point — merged PDFs are usually contracts, invoices and application packs.
Does merging change the pages?
No. Pages are copied across whole — same size, same resolution, same embedded fonts and images. Nothing is re-rendered or re-compressed, so the merged file looks exactly like the originals and is roughly the sum of their sizes. If a document has a different page size to the others, it keeps its own size rather than being stretched to match.
What about forms, links and signatures?
Page content, links and annotations come across. Interactive form fields usually survive but can lose their scripting, and digital signatures will be invalidated — that is not a bug, it is what a signature is for: it certifies one exact file, and a merged document is a different file. If a PDF is signed, merge a copy and keep the signed original.
Is there a size limit?
Only what your device can hold in memory. There is no server limit to run into because there is no server, but a few hundred megabytes of PDFs will make a phone struggle. If a merge fails on a very large batch, do it in two halves and then merge the halves.