Merge PDF

Why combine PDFs into one file

Sending one clean PDF looks more professional than a scatter of separate files, and many portals only accept a single upload. Merging lets you bundle a cover letter with a resume, gather receipts for an expense claim, or reassemble a document you signed page by page.

Because a PDF preserves layout exactly, the combined file looks the same on every device, which is why it is the standard for sharing finished documents.

Merging keeps your originals intact

Combining PDFs does not re-compress or re-render your pages; it copies each page's existing content into a new container, so text stays crisp and selectable and images keep their resolution. If the merged file is large, that is simply the sum of the originals, and you can run it through a compressor afterwards.

This tool merges entirely in your browser, so your documents are never uploaded. For files with names, addresses or signatures on them, that local processing is a real privacy advantage over upload-based sites.

Are my PDFs uploaded to a server?

No. Merging happens entirely in your browser using pdf-lib, your files are never uploaded, giving you full privacy.

Is there a limit on how many PDFs I can merge?

There's no fixed limit, but very large files are constrained by your device's memory since all processing is local.

Can I change the order of the files?

Yes. Rearrange the files before merging so the pages appear in exactly the order you want in the final document.

Does merging reduce quality?

No. Pages are copied as-is into the new document, so text and images keep their original quality.