Combine multiple PDFs into one document. Drag and drop to reorder. 100% private – no upload.
Drag & drop PDF files here, or browse
You can select multiple files at once
This free online PDF merger lets you combine multiple documents into a single file directly in your browser. There is no software to install, no account to create, and — most importantly — your files are never uploaded to any server. Every operation is performed client‑side, so your sensitive documents stay completely private.
Pro tip: You can merge as many files as you need — there is no hard limit. The tool copies pages directly without re‑compressing images, so the merged PDF retains 100% of the original quality. For large documents, the processing may take a few seconds depending on your device.
Is there a limit to how many PDFs I can merge?
No hard limit. You can merge dozens of files at once. The only constraint is your device's memory – very large files (hundreds of pages each) may take a moment to process, but there's no artificial cap.
Will merging PDFs reduce the quality of my documents?
Not at all. PDFcone copies the original pages directly without re‑compressing images or altering text. The merged PDF looks exactly like the originals, just combined into one file.
Are my files safe? Do you store them?
Absolutely safe. All processing happens inside your browser – your files never leave your device. You can even disconnect your internet after loading the page and the tool continues to work. No copies are ever stored on any server.
Can I merge password‑protected PDFs?
No, the tool cannot open encrypted PDFs. You'll need to remove the password first using your PDF reader or the software that created the file.
Can I change the page order before merging?
Yes! After uploading, just drag the file cards up or down using the handle (⋮⋮) on the left. The top file becomes the first pages in the final document.
Need to split a PDF instead? Use our Split PDF tool, or Crop PDF to trim margins.