Merge PDFs

Drop multiple PDFs, drag to reorder, then download one combined file. Your files never leave your browser.

Free, private, and actually unlimited.

No daily caps. No upload queue. No spinner that turns into a paywall after the third file.

Private by architecture

Your PDF's contents never leave your device. The editing tools run entirely in your browser — no upload, no server-side copy — and a Content-Security-Policy blocks any code that would try. Only account and contact actions ever reach our server, and they never carry your file.

Truly unlimited

No hourly throttling. No daily or monthly caps. No file-count limit. Edit one PDF or ten thousand — same site, same speed, no nag screen.

No signup, no watermarks

Every tool below works with or without an account or email. Output PDFs are clean — no stamps, no banners, no preview-mode quality downgrades.

About this tool

Merging PDFs is the most common reason people go looking for a PDF tool in the first place: a contract plus its signed signature page, a cover letter in front of a résumé, three scanned receipts that belong in one expense report. Our merger combines any number of PDFs into a single file, in the order you choose, and writes a clean document that opens the same way in every reader.

Order is drag-and-drop. Drop your files in, then grab any row and slide it up or down — the combined file follows the list exactly, top to bottom. Each file shows its page count and size so you can confirm you've got the right document before you commit. When you're ready, download the merged PDF, or open it straight in the editor to reorder, rotate, or delete individual pages without a second round-trip.

The whole merge happens in your browser. There is no upload, no queue, and no server-side copy of your documents — the files are read into memory, stitched together with pdf-lib, and handed back as a download, all on your own machine. For a contract, an NDA, or anything you'd rather not hand to a third-party service, that is the difference between 'trust us with your file' and 'we never received it in the first place.'

Frequently asked questions

How many PDFs can I merge at once?
There is no fixed cap — because nothing uploads, the practical limit is your browser's available memory. Combining a dozen everyday documents is instant; very large scanned files use more memory, so a few hundred megabytes of total input is a comfortable ceiling on most laptops.
Can I choose the order of the files?
Yes. Each PDF you add becomes a draggable row — reorder them however you like and the merged file matches that order exactly, top to bottom. You can also remove a file from the list before merging if you added the wrong one.
Are my files uploaded to a server?
No. The merge runs entirely in your browser with pdf-lib, so your PDFs never leave your device. A strict Content-Security-Policy blocks any outbound upload, so the claim is verifiable in your browser's network panel — not just a promise.
Will links and form fields survive the merge?
Page content and internal links are carried into the combined file, and bookmarks from each source are preserved where the format allows. Some highly customized interactive form fields can flatten when several files are combined, which keeps the merged result rendering consistently across readers.
Do I need an account, and is it free?
No account, and yes — merging is free with no email, no watermark, and no daily limit. Drop your files, drag them into order, merge, and download.
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