maxp — Maximum Profile (OpenType 1.8.1)

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This table establishes the memory requirements for this font. Fonts with CFF data must use Version 0.5 of this table, specifying only the numGlyphs field. Fonts with TrueType outlines must use Version 1.0 of this table, where all data is required.

Version 0.5

Type Name Description
Fixed Table version number 0x00005000 for version 0.5
(Note the difference in the representation of a non-zero fractional part, in Fixed numbers.)
uint16 numGlyphs The number of glyphs in the font.

Version 1.0

Type Name Description
Fixed Table version number 0x00010000 for version 1.0.
uint16 numGlyphs The number of glyphs in the font.
uint16 maxPoints Maximum points in a non-composite glyph.
uint16 maxContours Maximum contours in a non-composite glyph.
uint16 maxCompositePoints Maximum points in a composite glyph.
uint16 maxCompositeContours Maximum contours in a composite glyph.
uint16 maxZones 1 if instructions do not use the twilight zone (Z0), or 2 if instructions do use Z0; should be set to 2 in most cases.
uint16 maxTwilightPoints Maximum points used in Z0.
uint16 maxStorage Number of Storage Area locations.
uint16 maxFunctionDefs Number of FDEFs, equals to the highest function number + 1.
uint16 maxInstructionDefs Number of IDEFs.
uint16 maxStackElements Maximum stack depth2.
uint16 maxSizeOfInstructions Maximum byte count for glyph instructions.
uint16 maxComponentElements Maximum number of components referenced at “top level” for any composite glyph.
uint16 maxComponentDepth Maximum levels of recursion; 1 for simple components.
2 This includes Font and CVT Programs, as well as the instructions for each glyph.