Merge PDF
Combine multiple PDF files into one, in any order — free, unlimited and 100% private (files never leave your browser).
About the Merge PDF
This free PDF merger combines two or more PDF files into a single document, entirely inside your browser. Unlike most online PDF tools, your files are never uploaded to a server — merging happens on your own device, which makes it safe for contracts, bank statements, ID scans and other confidential paperwork. There are no watermarks, no sign-up and no limits on how many PDFs you can join.
Merging PDFs is essential when you need to submit one combined file: attaching a cover letter, CV and certificates to a job application, bundling scanned documents for a visa or government portal, or turning separate invoices and receipts into a single report. Simply add your PDFs, drag them into the order you want with the up and down arrows, and download the merged result.
The tool preserves the original page sizes, orientation and quality of every source file, so the combined PDF looks exactly like the originals. Because everything runs locally, merging is also fast — even large multi-hundred-page documents combine in seconds without waiting for uploads or downloads.
How to Use the Merge PDF
- 1Click the drop zone (or drag and drop) to add two or more PDF files.
- 2Reorder the files with the up/down arrows — the merged PDF follows this order.
- 3Remove any file you added by mistake using the X button.
- 4Click "Merge PDFs" and wait a moment while the files are combined in your browser.
- 5Download merged.pdf — done, no watermark, no sign-up.
Frequently Asked Questions
How do I merge PDF files for free without a watermark?
Add your PDF files above, arrange them in the order you want and click Merge. This tool is completely free and never adds a watermark, page limits or trial restrictions. The merged file is generated in your browser using open-source software, so the output is a clean, standard PDF identical in quality to your originals.
Are my PDF files uploaded to a server when I merge them?
No. Everything happens locally in your browser using JavaScript — your files never leave your computer or phone. That makes this merger safe for sensitive documents like contracts, medical records, ID scans and financial statements. If you disconnect from the internet after the page loads, merging still works.
Can I change the order of the PDFs before merging?
Yes. After adding files, each one appears in a list with up and down arrow buttons. The merged PDF follows the list order from top to bottom, so put your cover page first and appendices last. You can also remove individual files without starting over, and add more PDFs at any time.
Is there a limit on how many PDFs or pages I can combine?
There is no artificial limit — you can merge as many PDFs as you like. The only practical constraint is your device's memory, since processing happens locally. Merging dozens of files or documents with hundreds of pages works fine on a typical laptop or modern phone.
Why does the tool say my PDF is password-protected?
Encrypted PDFs can't be read without their password, so they can't be merged directly. Open the file in a PDF viewer with its password, use Print or Save As to create an unprotected copy, then merge that copy. This protects document security — no tool can silently bypass PDF encryption.