Combine several PDFs into one file, in the order you choose. Free, runs entirely in your browser — your files are never uploaded.
How to use Merge PDF
Drop in the PDFs you want to combine, or click to browse for them.
Drag the files into the order you want them to appear.
Click merge, and the combined PDF downloads straight to your device.
Frequently asked questions
Are my PDFs uploaded to a server?
Nothing is uploaded. The file is read into memory by the page and processed by your own browser, and the site’s Content Security Policy blocks outbound connections entirely — so it cannot send your file anywhere even if it tried.
Is there a file size or page limit?
No fixed limit. Merging happens in your browser, so the practical ceiling is your device’s memory rather than a plan tier. Very large scanned documents are the ones most likely to strain it.
Does merging reduce quality?
No. Pages are copied across intact, so text stays selectable and images keep their original resolution. Nothing is re-encoded.
Do I need an account, or will there be a watermark?
Neither. There is no sign-up, no watermark and no daily cap.