Merging PDFs is one of those jobs that comes up all the time: a contract and its appendix, scanned receipts for an expense claim, or chapters of a report exported separately. This tool joins them into one file in the order you set.
Everything happens in your browser. The files are read and combined on your own device, so confidential documents never pass through a server.
How to use
- Select or drop two or more PDF files.
- Use the arrows to put the files in the order you want.
- Press Merge PDF.
- Download the combined file.
Why use Deftivo
No upload
Your PDFs are processed locally in the browser. Nothing is sent to or stored on our servers.
Keeps pages intact
Pages are copied as they are — text stays selectable and quality does not change.
No sign-up or watermark
Free to use as often as you like, with no account and nothing stamped on your document.
Tips for a clean result
Name your files with numbers (01, 02, 03) before selecting them — they will line up in the right order automatically.
Password-protected PDFs cannot be merged until the password is removed in a PDF reader, because their contents are encrypted.
Frequently asked questions
Is it safe to merge confidential PDFs here?
Yes. The merge runs entirely in your browser using JavaScript. Your files are not uploaded, so they never leave your computer or phone.
Is there a file size or file count limit?
There is no fixed limit. Very large files depend on your device’s memory — on phones, merging several hundred megabytes at once may be slow.
Will the merged PDF lose quality?
No. Pages are copied without re-compressing, so text, images and vector graphics stay exactly as they were.
Can I merge PDFs on my phone?
Yes. The tool works in modern mobile browsers on Android and iPhone. The download is saved like any other file.