Merge PDF Online
Processing entirely on your device — large files may take a moment.
Scanned a contract in three parts? Received chapters as separate PDFs? Merging them into one document makes everything easier to read, share and archive. Add your PDFs to the list — they are combined in exactly the order shown, and you can remove and re-add files until the order is right.
Everything happens locally in your browser with pdf-lib — no upload, no server, no watermarks. Merging keeps each page exactly as it was; splitting never re-encodes content, so quality is identical to the original.
How to convert PDF to PDF
- 1
Select your files
Drag & drop your PDF files onto the area above, or click to browse. You can add multiple files at once for batch conversion.
- 2
Convert instantly
Click "Convert to PDF". The conversion runs entirely inside your browser using WebAssembly — no upload, no queue, no waiting.
- 3
Download results
Download each converted PDF file individually, or grab everything at once as a ZIP archive.
Frequently asked questions
Is this PDF to PDF converter really free?
Yes — completely free, with no sign-up, no watermark and no daily conversion limits. The site is supported by advertising.
Are my files uploaded to a server?
No. The conversion runs entirely inside your browser using WebAssembly, so your files never leave your device — that is what makes it instant and private.
Does it work on Windows, Mac, iPhone and Android?
Yes. Anything with a modern browser works: Windows, macOS, Linux, Android and iOS. No software installation is required.