Portable Document Format (PDF) is a multi-platform/application file format that captures a document's electronic image and formatting elements, including all fonts, text and graphics. It is a reliable and trusted file format used in the exchange of electronic data.
Because PDF provides color-accurate information, it allows a user to share and print data as it appears on the computer screen or monitor.
Developed by Adobe Systems, PDF is ensured by the ISO 32000 open standard.
Source: Portable Document Format (PDF)