Merge PDF
Combine contracts, invoices, notes or scans into a single document in seconds. Your files are not uploaded to any server: they are processed in your own browser, so they stay private and there is no page or size limit.
Processed 100% in your browser
Use the arrows to change the order.
Ctrl + Enter runCtrl + C copy result
How to use
- 1Drop the PDFs you want to merge (you can add more later).
- 2Reorder them with the arrows; you will see a thumbnail of each one’s first page.
- 3Click “Merge PDFs”.
- 4Download the combined document.
Use cases
- Gather the paperwork for an application into one file.
- Combine invoices or receipts to send to your accountant.
- Merge chapters and notes into a single study PDF.
- Add a cover page or an appendix to a report.
Frequently asked questions
Are my PDFs uploaded to a server?
No. Merging happens in your browser with pdf-lib, inside a Web Worker. Documents never leave your device, which makes it safe for contracts or personal data.
Is there a page or size limit?
No artificial limit. The only cap is your device’s memory; documents with hundreds of pages merge fine on a normal computer.
Can I change the order of the files?
Yes, with the arrows on each row. The final document follows exactly the order you see on screen.
Are bookmarks and forms preserved?
Pages are kept with their content, text, images and internal links. Each PDF’s bookmarks (outline) and global form fields are not carried over.
What about a password-protected PDF?
You first have to remove the protection with the password in a PDF reader; this tool cannot open encrypted files.