Is it safe to merge a PDF online?

Yes — and ours is safer than most. Many free online tools quietly upload your files to their servers to do the work. We don't. Everything happens inside your browser on your own device, so your files never reach the internet. There's no upload step, no server copy, and no way for us (or anyone else) to see what you're working on.

Are my files uploaded to a server?

No. There's no server-side processing here. The whole tool is a tiny app that runs in your browser — we don't even have a server that could receive your files. You can confirm this by opening your browser's network tab while you use the tool: nothing leaves your device.

Do I need to sign up or pay?

No. There's no account, no email collection, no credit card. The tool is free to use as much as you want, on as many files as you want. We're supported by a few unobtrusive ads on the page — not by your data.

How many PDFs can I merge?

As many as your device's memory allows — typically 50+ files on a regular laptop.

Are bookmarks preserved?

Yes. Bookmarks, internal links, and form fields from each source PDF are kept in the merged output.

Can I merge specific pages, not whole files?

Use Split first to extract the pages you want, then merge the resulting files.

Merge PDF Files

Merge any number of PDF files into a single document. Drag to reorder, mix in pages from different sources, and download the combined PDF — all without uploading anything.

Features

Combine unlimited PDFs into one
Drag-and-drop reordering of source documents
Preserves bookmarks, links, and form fields
No file size or page count limits
Files never leave your device

How to merge pdf files

Drop the first PDF — Start with any PDF. It becomes the first document in the merge.
Add more files — Drop additional PDFs onto the list, or click "Add files".
Reorder — Drag rows up or down to set the page order.
Save — Click "Merge PDFs" — the combined file downloads instantly.

Frequently asked questions

Is it safe to merge a PDF online?: Yes — and ours is safer than most. Many free online tools quietly upload your files to their servers to do the work. We don't. Everything happens inside your browser on your own device, so your files never reach the internet. There's no upload step, no server copy, and no way for us (or anyone else) to see what you're working on.
Are my files uploaded to a server?: No. There's no server-side processing here. The whole tool is a tiny app that runs in your browser — we don't even have a server that could receive your files. You can confirm this by opening your browser's network tab while you use the tool: nothing leaves your device.
Do I need to sign up or pay?: No. There's no account, no email collection, no credit card. The tool is free to use as much as you want, on as many files as you want. We're supported by a few unobtrusive ads on the page — not by your data.
How many PDFs can I merge?: As many as your device's memory allows — typically 50+ files on a regular laptop.
Are bookmarks preserved?: Yes. Bookmarks, internal links, and form fields from each source PDF are kept in the merged output.
Can I merge specific pages, not whole files?: Use Split first to extract the pages you want, then merge the resulting files.