Merge PDF
Join multiple PDF files into a single document. Add the files, drag them into the right order, and download the combined PDF. Everything happens in your browser with the pdf-lib library — nothing is uploaded.
Drop PDF files here, or click to chooseAdd two or more — drag to set the order
Files are combined in the order shown, page for page, entirely in your browser with the pdf-lib library — nothing is uploaded. Form fields and digital signatures may not survive a merge; bookmarks are not carried over.
How to use it
- Drop in two or more PDF files.
- Drag the rows, or use the arrows, to set the order.
- Click Merge and download the combined file.
FAQ
- Are my files uploaded?
- No. The PDFs are read and combined entirely in your browser. Nothing is sent to a server.
- Is there a file limit or watermark?
- No watermark and no imposed limit — very large files are only bounded by your device's memory.
- Will form fields and signatures survive?
- Page content, text and images are preserved. Interactive form fields and digital signatures may be dropped or invalidated by the merge.
Related tools
- Split PDFExtract a page range into a new PDF, or split every page into its own file.
- PDF EditorAdd text, a signature, images or white-out boxes to any PDF, then download.
- Organize PDFReorder, rotate and delete pages visually, then save a new PDF.
- PDF to JPG / PNGConvert each PDF page to an image at 96, 150 or 300 DPI.
Free to use, no sign-up. Calculations run in your browser — nothing you type is sent to a server. These tools are for general information only, not professional advice. See the full tool list.