Merge PDF files online, free, private, no signup

Combine multiple PDFs into one document in seconds.

Drop files here
or click to browse. Files never leave your browser.

How to merge pdf with Berlvis

  1. 1
    Add files

    Drop your PDFs into the box, or click to pick them.

  2. 2
    Reorder

    Drag the file cards to set the page order in the final PDF.

  3. 3
    Merge

    Click Merge PDF and download your combined file.

About Merge PDF

Merging PDFs should take 5 seconds, not a sales pitch. Drop two or more PDF files below, drag them into the order you want, and click Merge, you'll get a single combined PDF back instantly. Because Berlvis Tools runs the merge in your browser using the open-source pdf-lib engine, your documents never touch our servers. That makes it dramatically safer for contracts, invoices, medical records and anything else you'd rather not hand to a stranger's cloud.

Frequently asked questions

+Is the Merge PDF tool really free?

Yes. Every tool on Berlvis Tools is free with no signup, no watermark and no daily quota. No signup, no email, no watermark, no file-size cap, no daily quota, Berlvis Tools is 100% free because the heavy lifting happens on your computer, not on a paid server.

+Are my files safe when I use Merge PDF?

100%. Your file is processed entirely inside your browser. Nothing is uploaded, nothing is stored, and nothing leaves your device, that means it's faster, safer and works even when you're offline. You can even disconnect from the internet right after the page loads, the tool will still work.

+Is there a file size limit?

No. Because the work happens in your browser, the only real limit is your device's RAM. We've successfully processed PDFs over 500 MB on a regular laptop.

+Does it work on Mac, Windows, iPhone and Android?

Yes, anywhere with a modern browser (Chrome, Edge, Safari, Firefox, Brave, Arc). Nothing to install.

+How many PDFs can I merge at once?

There's no fixed limit. We've tested merging 200+ files in a single batch on consumer hardware.

+Will the merged PDF keep bookmarks, links and form fields?

Page content, internal links and most form fields are preserved. Outline (bookmark) trees from each source are not currently combined, coming soon.