Merge PDF
Combine multiple PDF files into one. Reorder, remove, and download — your files never leave your device.
Drop PDF files here
or click to browse. Add two or more to combine them.
Files never leave your device — everything runs in your browser.
Combining several PDFs into one file makes them far easier to send, print, and archive — whether you're stitching together a contract and its annexes, joining scanned pages, or bundling invoices for the month. This free merge PDF tool does it instantly in your browser. Add your files, arrange them in the order you want, and download a single, clean PDF in seconds.
Private by design
PDFs often carry sensitive information — statements, agreements, IDs. Uploading them to an online converter means trusting a server with those documents. This tool avoids that entirely.
Using the pdf-lib library running in your browser, every page is copied and combined locally on your own machine. Nothing is uploaded, nothing is stored, and the merge works even offline once the page has loaded — private, fast, and free.
Frequently asked questions
Are my PDFs uploaded anywhere?+
No. Merging happens entirely in your browser with JavaScript. Your PDFs never leave your device — nothing is uploaded, stored, or shared, which keeps sensitive documents private.
Can I reorder the files before merging?+
Yes. Each PDF appears in a list with its page count. Use the up and down buttons to set the order, or remove any file you don't want. The merged PDF follows the order shown.
What about password-protected PDFs?+
The tool tries to read encrypted PDFs where possible, but files with strong protection or unusual encoding may fail to load. If a file can't be read, remove the protection first and try again.
Is there a limit on the number or size of PDFs?+
There's no fixed limit. Since everything runs locally, very large files depend on your device's available memory, but merging several ordinary documents is quick and reliable.
Will the quality change after merging?+
No. Pages are copied as-is into the new document, so text, images, and formatting stay exactly the same. Nothing is re-compressed or downgraded.
Is it free to use?+
Yes, completely free with no sign-up and no watermark. Merge as many PDFs as you need.