Merge PDF
Combine several PDF files into one document — right here in your browser. Drag to set the order, then download. Nothing is uploaded.
Drop PDF files here
or pick them from your device — they stay on your device
Select PDFsHow to merge PDFs
Add files
Drop in two or more PDFs or pick them from your device.
Set the order
Drag the rows to arrange the documents exactly how you want.
Download
Hit merge and the combined PDF saves to your downloads.
Why merge PDFs in your browser?
Most free "merge PDF" websites quietly upload your documents to their servers, combine them there, and send the result back. For a flyer that's fine — for a signed contract, an ID scan, or a medical form, you've just handed sensitive data to a company you don't know.
This tool works differently. The merge happens entirely inside your browser using a WebAssembly PDF engine. No byte of your file is ever transmitted. You can even disconnect from the internet after the page loads and it still works.
Frequently asked questions
Are my PDFs uploaded to a server?
No. The entire merge runs in your browser — you can confirm it in your browser's network tab. There are no uploads.
Is there a file size or count limit?
The tool comfortably handles everyday documents using your device's own memory. For very large batches, the native PDF Toolkit app has no page limits.
Will merging reduce quality?
No. Pages are copied losslessly, so text stays selectable and images keep their original resolution.
Does it work on mobile?
Yes — it runs in any modern browser, including phones and tablets.