Definition

Noun: A type of computer font where each character is defined as a fixed grid of pixels (a bitmap). This makes the font's appearance on screen highly dependent on its specific size and resolution, as it cannot be scaled smoothly without losing quality.

Usage

A raster font is used primarily for on-screen display in computer systems, especially in older or simpler graphical user interfaces, terminal windows, or low-resolution displays where clear, legible text at a specific size is needed.

Examples

• The old command prompt used a simple raster font for all its text.
• For the LED sign, they designed a custom raster font because it needed to be displayed at one fixed pixel size.
• The document looked blocky on the old monitor because the system defaulted to a raster font.

Advanced Usage

• Legacy System Display: Raster fonts are often found in legacy software, embedded systems, or hardware where processing power is limited and font scaling is not required.
• Pixel Art and Design: In digital art, a designer might create a custom raster font to achieve a specific pixelated aesthetic for a game or graphic.

Variants and Related Words

• Bitmap Font: A direct synonym for a raster font.
• Vector Font / Outline Font: The opposite type of font, where characters are defined by mathematical curves and lines, allowing for smooth scaling to any size. Examples include TrueType and OpenType fonts.
• Screen Font: A general term for any font optimized for display on a computer screen, which can include both raster and anti-aliased vector fonts.

Synonyms

• Bitmap font
• Fixed-size font
• Pixel font

Antonyms

• Vector font
• Scalable font
• Outline font

Related Technical Terms

• Pixel: The smallest controllable element of a picture on the screen, which a raster font is composed of.
• Resolution: The number of pixels in a display, which directly affects the sharpness of a raster font.
• Hinting: A technique used in vector fonts to optimize their appearance at specific sizes on pixel-based displays; this process is not applicable to raster fonts as they are pre-defined bitmaps.

Noun

1. the font that is displayed on a computer screen
   • when the screen font resembles a printed font a document may look approximately the same on the screen as it will when printed