What is PDF?
PDF is a file format developed by Adobe in 1993 for presenting documents independently of software, hardware, and operating systems.
Key Features
- Universal compatibility – Opens the same way on any device
- Preserves formatting – Maintains fonts, images, and layout exactly as intended
- Secure – Supports passwords, encryption, and digital signatures
- Compact – Efficient file compression
- Non-editable – Content appears the same to all viewers (though PDFs can be edited with special software)
Common Uses
- Documents, forms, and contracts
- E-books and manuals
- Reports and presentations
- Invoices and receipts
- Resumes and applications
File Extension
.pdf
How to Create/View
- View: Adobe Acrobat Reader, web browsers, built-in OS viewers
- Create: “Print to PDF” feature, Adobe Acrobat, or conversion tools
PDF has become the standard for sharing documents that need to look identical across all platforms.