Merge PDF files in your browser
Add multiple PDF files, change their order, and export a merged PDF. Processing runs entirely client-side.
Multiple PDFs
Add two or more PDF files from your device.
Sort before merging
Drag files into the right position or use quick sorting actions.
Fully local
All files stay in your browser. No upload to external servers.
Merge PDF online without upload
Use iStyle.ch to combine multiple PDF documents directly in your browser into one file.
The PDF merge tool works completely client-side. Your files stay on your device while you sort them, review previews, and export a combined PDF.
How does PDF merging work?
Add files, adjust the order, start the merge, and download the final PDF.
- Choose two or more PDF files from your device.
- Change the order using drag and drop or sorting actions.
- Merge all files and download the finished PDF.
Why use this PDF merge tool?
The tool is fast, simple, and privacy-friendly. You can merge PDFs in Chrome, Edge, Safari, or Firefox without installing software.
Typical use cases
Combine invoices, attachments, quotes, scans, reports, or signed pages into one clean PDF document.
Frequently asked questions
Are my PDFs uploaded to a server?
No. Merging runs directly in your browser, so your files stay on your device.
Can I change the order before merging?
Yes. You can move files with drag and drop, use sorting actions, or move individual items up and down manually.
Does the PDF merge tool work on mobile?
Yes. The interface is optimized for mobile devices and desktop, including a clearly visible merge button on small screens.
Can I merge large PDFs too?
Yes, as long as your browser and device have enough memory. Very large files may take longer to analyze and export.
What happens with password-protected PDFs?
Encrypted PDFs are detected. If a file cannot be opened, the tool shows you which file caused the problem.
Arrange files
Check previews, change the order, and remove files before merging.
Add more PDFs
You can add more files at any time before merging.
Merge overview
Keep an eye on file count, pages, and total size before exporting.
Sort and organize
Drag files into the right position or use quick actions.
File queue
Top to bottom matches the order in the final PDF.
Your merged PDF is ready
Download the created file.
The merged PDF was created locally in your browser. Your files were not uploaded to an external server.