Merge PDF
Merge multiple PDF files into one document online. Free, private, no sign-up.
Free · No sign-up▶ Watch: How to merge PDF files (0:40)
Video transcript
- Add your PDFs. Pick two or more PDFs at once. Every page shows up as a thumbnail.
- Add one more file. Forgot one? Use Add PDF. New pages go to the end of the list.
- Check the page order. Drag a page to move it, or use the arrow to rotate and X to remove it.
- Name the file. Give the merged PDF a clear name so it is easy to find later.
- Merge and download. One click joins everything into a single PDF, right in your browser.
How to use Merge PDF
- 1. Drop two or more PDF files into the upload box, or click to choose them. Use ➕ Add PDF later to add more files.
- 2. Page thumbnails appear in a grid, color-coded by source file. Drag pages to reorder them, or use ⇅ Reverse to flip the order.
- 3. Click ↻ on a page to rotate it, ✕ to remove it, or ↻ Rotate all to turn every page. Start over clears everything.
- 4. Type a file name if you like, then click 🔗 Merge & download to save the combined PDF to your device.
Frequently asked questions
Is Merge PDF free, and how many files can I combine?
It’s free, needs no sign-up and adds no watermark. There’s no fixed limit on the number of files or pages; merging happens in your browser, so very large documents depend on your device’s memory. You can keep adding files with the Add PDF button.
Are my PDF files uploaded when I merge them?
No. Page thumbnails are drawn with PDF.js and the merged file is built with pdf-lib, both running in your browser. Your PDFs stay on your device, which makes it suitable for contracts, statements and other private documents.
How do I change the page order when merging PDFs?
After adding files, drag any page thumbnail to a new position in the grid; the page numbers update as you go. You can mix pages from different files in any order, since each page is its own card, and a colored dot shows which file it came from.
Can I remove or rotate pages while merging PDFs?
Yes. Click ✕ on a page to leave it out of the final file, or ↻ to rotate it 90 degrees at a time. Rotate all turns every page at once. The original files aren’t changed; only the new merged PDF reflects your edits.
Why won’t my PDF merge?
Password-protected or damaged PDFs can’t be read and show an error message when you add them. Remove the password first with a PDF unlock tool if you own the file, or re-save it from the original app, then try merging again.
Does merging PDFs reduce quality or change the text?
No. Pages are copied as-is into the new document, so text stays selectable and images keep their original quality. The page thumbnails are only low-resolution previews; they aren’t used in the downloaded file.