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Merge PDF files

Combine several PDFs into one document, in the order you choose. Nothing is uploaded — the merge happens in your browser.

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Why use this tool

  • No file size limit

    Full-size photos straight from your phone or camera.

  • Nothing is uploaded

    Processed entirely in your browser. Your files never leave your device.

  • No signup needed

    Open the tool and go. No account, no email.

A merge puts the pages of several PDFs end to end in one file. It is the job behind most of the awkward moments in paperwork: a scanned contract that arrived in three emails, an application that wants one attachment, a report whose cover page lives in a different file from its body.

The pages are copied across as they are. Text stays selectable, links keep working, and a page that was sharp before is exactly as sharp afterwards — nothing here turns a page into a picture of itself, which is the usual reason a merged file looks worse than what went into it.

How to merge PDF files

  1. Add your PDFs

    Drop them on the box above, or click to pick them. You can add more at any point, and each one shows its page count so you can see what you are combining.

  2. Put them in order

    Use the arrows to move a file up or down. The finished PDF follows this order from top to bottom. Remove anything you added by mistake with the ×.

  3. Merge and download

    Press Merge PDFs. One file comes back, named after the first document, ready to download.

The order is the whole job

Merging is less about the files than about the sequence. A signed agreement usually wants the contract first and the signature page last; a claim wants the form, then the receipts, then the photographs. Getting that wrong means whoever opens it has to hunt.

The list above is the running order, top to bottom, and the finished document follows it exactly. Move a file with the arrows and the result changes with it — there is no separate confirmation step where the order can be lost.

If you need pages from inside a document rather than all of them, split it first, then merge the parts you want. The two tools are designed to be used together.

Nothing is uploaded, so nothing is queued

Most merge tools want your files on their server. That means an upload, a wait, and a copy of your document somewhere you cannot see, which is an uncomfortable arrangement for a contract or a medical record.

This runs entirely in your browser. The files never leave your device, so there is no upload bar, no queue behind other people's jobs, and no size limit beyond what your own machine can hold in memory.

It also means the tool works offline once the page has loaded, which is occasionally useful on a train or a bad hotel connection.

What merging does not change

Page size and orientation are kept per page. Merging an A4 report with a landscape scan gives one document containing both, each page the shape it always was, rather than forcing everything onto one paper size.

Bookmarks and form fields are not carried across. This copies pages, which is what a merge needs to be reliable; a document with interactive form fields will keep its appearance but not its fillable boxes.

Password-protected PDFs cannot be merged here. The password has to be removed first, in whichever application made the file.

What survives a merge

What you can expect to find in the finished document.

KeptNot keptWhy
Text, fonts and vector artwork—Pages are copied whole, never re-rendered, so nothing is re-compressed.
Page size and rotation, per page—Each page keeps its own shape, so mixed documents combine cleanly.
Links inside a pageBookmarks and form fieldsCopying page objects preserves appearance; the document-level structures around them are not carried across.

When people merge PDFs

  • An application that wants one file

    Passport, proof of address and a bank statement, combined into the single attachment a form insists on.

  • Scans that arrived in pieces

    A scanner that writes one PDF per page, put back together in the right order.

  • A report and its appendices

    Body, figures and data tables from different sources, delivered as one document.

  • Invoices for an expense claim

    A month of receipts in one file, so the claim is one attachment rather than fifteen.

Frequently asked questions

Are my PDFs uploaded anywhere?
No. The merge runs in your browser, on your own device. The files never reach a server, so there is nothing to delete afterwards.
How many PDFs can I merge at once?
There is no fixed limit. The practical ceiling is your device's memory — merging a few hundred pages is comfortable on an ordinary laptop or phone.
Will the quality drop?
No. Pages are copied, not re-encoded. A scan merges at exactly the resolution it had, and text stays text rather than becoming an image.
Can I choose the order?
Yes. The list is the order, and the arrows move a file up or down. The finished PDF follows it top to bottom.
Can I merge a password-protected PDF?
No. An encrypted PDF cannot be opened here at all. Remove the password in the application that created the file, then merge the unprotected copy.
Can I take just some pages from a file?
Not in this tool — it combines whole documents. Use Split PDF first to pull out the pages you want, then merge the results.
Do the files stay on my device if I close the tab?
Nothing is stored at all. Closing the tab clears everything; the merged file only exists once you download it.
Does it work on a phone?
Yes. It runs in the mobile browser the same way, though a very large merge is limited by the memory the phone can spare.

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