Merge PDF Files Online
Choose two or more PDFs, arrange the pages in the order you want, and export one combined file.
Drag and drop PDF files here
or
Files are processed in your browser and are not uploaded to our servers.
Files are processed in your browser and are not uploaded to our servers.
How merge pdf works
- Choose one or more PDF files using the uploader above, or drag it in.
- Use the thumbnail rail and contextual panel to set up merge PDF.
- Review the result in the page preview before exporting.
- Export — PageFlow builds a new file locally and downloads it to your device.
What this tool changes
- Combines pages from every selected file into one new PDF, in the order you set.
What it preserves
- Original page size and orientation of each source page.
Good to know
- Interactive form fields, embedded digital signatures, and some annotations may be flattened or altered when pages are combined.
- Encrypted source files must be unlocked before they can be merged.
Frequently asked questions
- Are my files uploaded to a server?
- No. Merging happens entirely in your browser using JavaScript. Your PDF content never leaves your device.
- Can I reorder pages from different files after merging?
- Yes. Every page from every file appears in one thumbnail rail before export, and you can drag or use keyboard controls to reorder them.
- What happens to password-protected PDFs?
- You will need to unlock a password-protected PDF with its correct password first. PageFlow does not bypass PDF passwords.
- Will digital signatures survive the merge?
- Certificate-based digital signatures are generally invalidated by any edit, including merging. PageFlow will warn you before this happens.