tables

Show font table information.

Quick Reference

fontisan tables <font> [options]

Options

Option	Description
--format FORMAT	Output format (text, yaml, json)
--detail	Show detailed table info
--checksums	Include checksums

Output

Lists all tables in the font with:

• Table tag (4-character identifier)
• Checksum
• Offset
• Length

Examples

# List all tables
fontisan tables font.ttf

# With checksums
fontisan tables font.ttf --checksums

# Detailed information
fontisan tables font.ttf --detail

# JSON output
fontisan tables font.ttf --format json

Sample Output

Tag    Checksum    Offset    Length
-----  ----------  --------  --------
head   0x12345678  0         54
hhea   0x23456789  54        36
maxp   0x3456789A  90        32
OS/2   0x456789AB  122       96
name   0x56789ABC  218       1024
cmap   0x6789ABCD  1242      2048
...

Common Tables

Tag	Name	Purpose
head	Font Header	Global font info
hhea	Horizontal Header	Horizontal metrics
maxp	Maximum Profile	Font requirements
OS/2	OS/2	Windows metrics
name	Naming	Font names/strings
cmap	Character Map	Unicode to glyph mapping
glyf	Glyph Data	TrueType outlines
loca	Location	Glyph offsets
CFF	CFF	Compact Font Format
post	PostScript	PostScript names
GPOS	Glyph Positioning	OpenType positioning
GSUB	Glyph Substitution	OpenType substitution
fvar	Font Variations	Variable font axes
gvar	Glyph Variations	Glyph deltas
COLR	Color Layers	Color font layers
CPAL	Color Palettes	Color font palettes

Detailed Documentation

For table access via the Ruby API, see the SfntFont API.