Free PDF merger
Add two or more PDFs and download a single combined file in seconds. No signup, no AI.
Free to use. Free to keep.
The tool needs no account. A free account saves every result, adds the full study kit, and syncs to your phone.
This free merge PDF tool combines two or more PDFs into one file, in the order you pick. Add your files, set the order, and download a single PDF in seconds. No sign up, nothing to install, and your files are processed in memory and never stored.
Add your PDFs
Choose two or more PDFs or drop them in. No account needed.
Convert
We build your new file on our server, in memory.
Download
Your file downloads right away, processed in memory and never stored.
Why use this merge pdf
Your order, kept
The files merge in the order you add them, so the combined PDF reads the way you intend.
Up to 20 at once
Combine a stack of PDFs in one go, not two at a time.
Nothing to install
No app, no account, no plugin. Use it in any browser, on any device.
Your files stay private
Everything is processed in memory and never stored. Nothing is kept after you close the tab.
Who it's for
Students
Combine separate chapter PDFs or your scanned pages into one file to read or hand in.
Anyone with paperwork
Join receipts, forms, or pages into a single PDF to attach or print.
On any device
No software to download. Merge PDFs from a laptop, tablet, or phone in the browser.
Your files are never stored
The converter works without an account. Your file is processed on our server in memory, never written to disk, and dropped as soon as the conversion finishes. Nothing is stored, and no AI reads your document.
Questions
How many PDFs can I merge?
Up to 20 at a time. They're combined in the order you add them.
Is it private?
Yes. No account, and the files are processed in memory and never stored.
Study it on your phone too
Synapsi runs on the web, iPhone, iPad, Mac and Android. One free account, the same notes everywhere.
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