Merge PDF
Combine several PDFs into one file in the order you want.
How to use Merge PDF
Combine several PDF files into a single document, in exactly the order you want.
- Select two or more PDF files (you can add more later with Add more).
- Drag the file cards to change the order — the first card becomes the first pages.
- Press Merge PDF. The merged file downloads automatically.
Options explained
- Order
- Files are merged from left to right, top to bottom. Drag cards to reorder.
Tips for best results
- Need only some pages of a file? Use Organize PDF after merging to delete or reorder individual pages.
- Bookmarks and form fields of the original files are not kept; the page content is.
- To merge images too, first convert them with JPG to PDF.
Questions
Is there a limit on the number of files?
No fixed limit. Dozens of files work fine on a normal computer.
Will the quality change?
No. Pages are copied exactly as they are — nothing is re-compressed.
Is Osd-Scan really free?
Yes. Every web tool is free with no sign-up, no watermark and no daily limit. The website is supported by ads. A paid desktop app for Windows (one-time purchase, no ads) is coming soon.
Are my files uploaded to a server?
No. All processing happens inside your browser on your own device. Your documents never leave your computer or phone, so nobody — including us — can see them. You can even disconnect from the internet after the page loads.
Which browsers are supported?
Current versions of Chrome, Edge, Firefox, Safari and Samsung Internet on Windows, macOS, Linux, Android and iPhone/iPad. For the camera scanner on a phone the page must be opened over https.