MPDF Merger Online

Merge PDF — Free Online PDF Merger

The fastest way to merge PDF files online. 100% free, secure, and works directly in your browser without any upload.

Drop your PDF files here

or click below to select from your device

100% free • Works offline in your browser • No file uploads to servers

How it works

1

Add your PDFs

Drag PDF files into the box or pick them from your desktop, phone gallery or cloud folder.

2

Set the page order

Drag the file cards left or right until the chapters, invoices or scans sit in the order you want.

3

Merge and download

Press Merge PDF and the finished document is saved straight to your device — no email, no account.

What merging a PDF actually does

Merging takes the page objects, fonts and embedded images from every file you add and writes them into a single new PDF in the order you chose. Because the pages are copied rather than rendered again, a 300-page merged report looks exactly like the originals did, with working links and selectable text.

This matters when you are combining signed contracts, scanned ID pages or exported bank statements: re-printing them through a virtual printer flattens the text into pictures, while a real merge keeps them searchable.

Everyday jobs this page solves

Students stitch lecture handouts into one revision file. Freelancers attach an invoice, a timesheet and a receipt as a single document instead of three attachments. Landlords bundle a tenancy agreement with its appendices before sending it for signature.

Because the order is drag-and-drop, you can also insert a cover page in front of an existing report without opening desktop software.

Frequently Asked Questions

How many PDF files can I merge at once?+

There is no hard limit. The merge runs inside your browser, so the practical ceiling is your device memory — most laptops handle 100+ files or several hundred megabytes comfortably.

Does merging change the quality of my pages?+

No. Pages are copied byte-for-byte into the new document, so text stays selectable and images keep their original resolution. Nothing is re-encoded or re-compressed.

Are my documents uploaded to a server?+

No. This merger uses the WebAssembly PDF engine in your browser. Your files never leave your computer, which is why the tool also works on offline or restricted networks.

Can I merge a password-protected PDF?+

Remove the password first with our Unlock PDF tool, then merge the unlocked copy. Encrypted files cannot be read by any merger until the password is stripped.

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