U8x8 Fonts 【Certified】

U8x8 fonts are a type of bitmap font used in various graphical and embedded systems. The "u8x8" name indicates that each character is represented by an 8x8 pixel bitmap. These fonts are widely used in applications where memory and processing power are limited, such as in many microcontrollers, old computer systems, and some embedded Linux systems.

The standard fonts are great, but what if you need Japanese characters, custom icons, or a specific corporate logo? You can create custom u8x8 fonts.

The U8g2 library includes a tool called bdfconv (BDF Converter). BDF (Glyph Bitmap Distribution Format) is a standard text-based font format. u8x8 fonts

Workflow:

Alternatively, you can manually define a font in C: U8x8 fonts are a type of bitmap font

static const uint8_t my_custom_font[] = 
  0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Space
  0x00, 0x00, 0x5F, 0x00, 0x00, 0x00, 0x00, 0x00, // !
  // ... and so on for 256 characters
;

(Note: The order of bytes depends on your display's page layout.)

The U8g2 library has two distinct subsystems: Alternatively, you can manually define a font in

u8x8 fonts are designed specifically for the U8x8 subsystem.

u8x8 is a compact font and display helper used primarily with small monochrome OLED, LCD, and LED displays in embedded systems (especially Arduino and ESP-based projects). It’s part of the u8g2/u8x8 ecosystem but focuses on a minimal, byte-oriented interface and very small memory footprint.