A PDF merger takes two or more separate PDF files and joins them together in a specific order to create one continuous file.

A PDF merger is useful because it helps you:
1. Stay organized
Instead of managing many separate files, you can keep everything in one document.
2. Share documents easily
It’s easier to send one file than multiple attachments (especially for emails or submissions).
3. Combine related content
Example:
Resume + Cover Letter + Certificates → One file for job applications
4. Prepare professional documents
Used in:
Business reports
School assignments
Legal documents
5. Save time
No need to open and switch between multiple files.

Most PDF mergers follow a similar process:
Step 1: Upload files
You select the PDFs you want to combine.
Step 2: Arrange order
You can drag and reorder the files (e.g., which one comes first).
Step 3: Merge
The tool:
Reads each PDF
Extracts the pages
Combines them into one continuous document
Step 4: Download
You get a new merged PDF file.

Technically, a PDF merger:
Parses the internal structure of each PDF
Rebuilds a new file with all pages in sequence
Keeps formatting, images, and text intact