How to merge PDF files into one - free

3 min read · Updated October 2026

Portals often allow only one file. Here's how to put your Aadhaar, mark sheets and certificates into a single PDF.

Step by step

1. Open Merge PDF and add two or more PDFs.
2. Put them in order with the up and down arrows.
3. Press Merge PDF and download the single file.

Have photos instead of PDFs?

Turn phone photos of documents into a PDF first with JPG to PDF. On a phone you can even scan with the camera and tick "Make it look like a scan" for clean black-and-white pages.

Fine-tune the result

• Reorder, rotate or delete single pages with Organize PDF.
• Too big to upload? Compress PDF - see our guide to getting a PDF under 200 KB.
• Add page numbers with Add page numbers.