Free online PDF merger — combine multiple PDF files into one document. Upload up to 10 files, arrange the order, and merge in seconds. No sign-up required. Your files never leave your browser.
Last updated: April 2026 · Powered by pdf-lib
Select multiple PDF files at once
Up to 10 files · Max 200MB total
Your PDFs have been combined. Click to download.
Submitting a university application often means combining a personal statement, transcript, reference letters, and a CV into a single PDF. Our free PDF merger combines multiple PDF files into one document in seconds — drag, reorder, merge, download. All processing happens locally in your browser.
Built on pdf-lib, the merger preserves the original quality and formatting of every page. There is no file size limit other than your browser memory, and no watermarks are added to the output.
Students use this to bundle application documents into one file, combine chapter PDFs from different sources into a single study guide, merge split scans of a single document, and package group project sections before submission.
Yes — 100% free with no sign-up, no watermarks, and no paid tier. It runs entirely in your browser using the open-source pdf-lib library.
You can merge up to 10 PDF files in a single operation. If you need to merge more, download the result and add it as the first file in a new batch.
The combined total of all selected files must be under 200MB. Individual files can be any size as long as the total stays within this limit.
No. Everything runs inside your browser using pdf-lib. Your PDFs are never sent to any server and are cleared from memory when you close the tab.