Merge PDF — Combine PDF Files Into One

Merge multiple PDF files into a single document. Drag and drop PDFs, reorder pages, and download the combined result — free and private.

all processing runs in your browser

merge-pdf

input > drop or select PDF files to merge

$ drop PDF files here or click to browse

select multiple PDF files to combine

or paste from clipboard (⌘V / Ctrl+V)

Merge PDF Files Online — Free, No Upload

Combine multiple PDF documents into one file directly in your browser. No sign-up, no upload — your files stay on your device.

$ cat FAQ.md

How do I merge PDF files online?▶

Drop or select your PDF files, reorder them if needed, then click merge. The combined PDF downloads instantly — no account or upload required.

Is there a file size limit?▶

There is no hard limit. Merging runs in your browser, so it depends on your device's memory. Most documents merge without issues.

Are my PDFs uploaded to a server?▶

No. The merge happens entirely in your browser using pdf-lib. Your files never leave your device — zero server processing.

Can I merge more than two PDFs?▶

Yes. You can merge as many PDF files as you need. Add them all at once or one by one, reorder, and combine into a single document.

$ ls ./related