Merge PDF
Combine several PDF files into one document, in the order you choose.
Runs in your browser — your data never leaves your device.
About the Merge PDF
Join several PDFs — scanned forms, invoices, chapters or certificates — into a single file that is easy to email, print or upload. Add the files, put them in the right order and download one combined PDF.
The whole process runs in your browser, so confidential documents such as CNIC copies, bank statements or contracts never leave your computer or phone.
How to use the Merge PDF
- Click Choose files or drag your PDF files onto the box.
- Use the ↑ and ↓ buttons to set the order. The first file comes first in the merged PDF.
- Click Merge PDFs. The combined file
merged.pdfdownloads automatically.
How it works
Each PDF is opened in your browser with the open-source pdf-lib library. Its pages are copied — exactly as they are, with text, images, links and page sizes — into a new document in the order you chose, and the new document is saved.
Pages are not re-compressed, so quality stays the same. Password-protected PDFs must be unlocked first.
Examples
- Combine a 2-page application form, a 1-page CNIC copy and a 3-page certificate into one 6-page PDF for an online submission.
- Merge twelve monthly invoices into one yearly file for your accountant.
Frequently asked questions
Are my PDF files uploaded to your server?
No. The PDF is opened and processed by your own browser. It never leaves your device, so it is safe to use with private documents.
Is there a limit on the number of files?
There is no fixed limit. Each file can be up to 100 MB; very large merges depend on your device memory.
Will the quality of my PDF change?
No. Pages are copied as they are, without re-compressing text or images.
Can I merge password-protected PDFs?
Not directly. Remove the password in a PDF reader first (you need to know it), then merge.