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Show a summary of table differences between two OpenType fonts.

Project description

fbdiff is a tool that reports a brief summary of table differences in OpenType fonts. It reports which tables exist in only one of the fonts, and it will report which common tables are different and which are identical.

It only looks at the binary data: tables are not parsed.

Example usage:

$ fbdiff fontA.ttf fontB.ttf
Tables only in font B:

Different tables:
            A      B
  GPOS  29628  29574 bytes
  STAT     28    162 bytes
  fpgm   4095   4078 bytes
  glyf  36984  26626 bytes
  head     54     54 bytes
  loca    940    940 bytes
  name   3078   4557 bytes
  prep   1339   1339 bytes

Identical tables:
  avar, cmap, cvar, cvt , fvar, gasp, gvar, hhea, hmtx, maxp, post

Help text:

$ fbdiff --help
usage: fbdiff [-h] [-o] FONT_A FONT_B

Compare the binary tables of two OpenType fonts.

positional arguments:
  FONT_A             an OpenType font file
  FONT_B             an OpenType font file

optional arguments:
  -h, --help         show this help message and exit
  -o, --table-order  show the table tags in sfnt order side-by-side

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