Merge PDFs, reorder, rotate, delete and extract pages, or build a PDF from plain text — all in the browser. Every page is processed on your own device, which means a contract or a bank statement never gets uploaded to someone else's server just to have two files joined into one.
How to merge PDF files without uploading them
Drag in the PDFs you want to combine, in any order.
Reorder the files, then reorder, rotate or delete individual pages.
Extract a page range to its own document if you only need part of one.
Save the result. It was assembled locally — the files never left your device.
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Questions
Is it safe to merge confidential PDFs here?
The file is read and written by code running in your browser tab, and there is no application server for it to be sent to. Nothing is uploaded, stored remotely or logged.
Is there a file size or page limit?
No imposed limit. The practical ceiling is your device's memory, since the whole document is held there while you work on it.
Can it split a PDF as well as merge?
Yes — extract any page range into a new document, and delete or rotate pages in place.