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Combine multiple PDF documents into a single file right in your browser. Whether you need to merge scanned pages into one report, combine invoices before sending, or join chapters of a document, this free PDF merge tool handles it in seconds — with drag-and-drop support and drag-to-reorder so the pages land exactly in the order you want.
Unlike most online PDF tools, PureKit never uploads your files. The merging happens entirely on your own device using WebAssembly — your documents are processed in the browser's memory and never touch a server. That makes it safe for contracts, ID scans, medical records, financial statements, and any other documents you would rather not hand to a third party. It also works offline once the page has loaded.
No. PureKit runs entirely in your browser — the merging is done locally with JavaScript and WebAssembly. Your files never leave your device, which you can verify by disconnecting from the internet after the page loads: merging still works.
Yes, completely free with no file-count limits, no watermarks, and no sign-up. The site is supported by ads, which is why the tools can stay free.
There is no hard limit imposed by the tool. The practical limit is your device's memory, since files are processed locally — for typical documents, merging dozens of files is no problem.
No. Pages are copied into the new document losslessly — text stays sharp, images keep their original resolution, and forms and vector graphics are preserved.
Yes. Because everything runs in the browser, it works on any modern device — Windows, macOS, Linux, iOS, and Android — with no app to install.
PureKit · pdf-merge · Free online tool — files processed locally in your browser, no upload.