# Metadata
Platforms: desktop, server, mobile OS: mac, windows, linux, ios, android Introduced: 1.0 Security:
# Syntax
the fontSizes of fontName
# Params
- fontName : The name of a font that is installed on the system.
# Examples
the fontSizes of "Arial"
# Description
Use the fontSizes function to determine which font sizes can be displayed or printed without creating "jaggies".
If zero appears in the list returned by the fontSizes function, the font is scalable, meaning that it can be displayed at any size supported by the operating system.
# Tags
ui,
# See
- **keyword:** line - **function:** fontStyles - **glossary:** font, return - **control structure:** function