Inverse Font Subset

Sometimes you want to create a subset of a font with characters you know you need, e.g. Latin.

But maybe every once in a while you need a character or two you missed from the complete font.

So how about having a second subset containing everything that is NOT in the initial subset.

Using unicode ranges you can load the main subset and then, only when needed, get the additional subset.

Prerequisites

Glyphhanger and its prerequisites, see here

https://github.com/zachleat/glyphhanger/

Install

npm i -g inverse-subset

Help

$ which inverse-subset
/usr/local/bin/inverse-subset

$ node /usr/local/bin/inverse-subset -h
Usage: inverse-subset [options]

Generates an inverse subset font from a complete font and a subset font.

Options:
  -V, --version             output the version number
  -c, --complete <path>     Path to the complete font file
  -s, --subset <path>       Path to the subset font file
  -o, --output <directory>  Directory for the inverse subset font (default: "/Users/you/Documents/codez")
  -h, --help                display help for command

Example use

$ node /usr/local/bin/inverse-subset -c ../Oxanium.ttf -s ../subset/Oxanium-subset.woff2
Creating the inverse subset...
Running: glyphhanger --formats=woff2 --subset="../Oxanium.ttf" --whitelist=U+0,U+D,U+A0,U+A1,U+A2,U+A3,U+A4,U+A5,U+A6,U+A7,U+A8,U+A9,U+AA,U+AB,U+AC,U+AD,U+AE,U+AF,U+B0,U+B1,U+B2,U+B3,U+B4,U+B5,U+B6,U+B7,U+B8,U+B9,U+BA,U+BB,U+BC,U+BD,U+BE,U+BF,U+C0,U+C1,U+C2,U+C3,U+C4,U+C5,U+C6,U+C7,U+C8,U+C9,U+CA,U+CB,U+CC,U+CD,U+CE,U+CF,U+D0,U+D1,U+D2,U+D3,U+D4,U+D5,U+D6,U+D7,U+D8,U+D9,U+DA,U+DB,U+DC,U+DD,U+DE,U+DF,U+E0,U+E1,U+E2,U+E3,U+E4,U+E5,U+E6,U+E7,U+E8,U+E9,U+EA,U+EB,U+EC,U+ED,U+EE,U+EF,U+F0,U+F1,U+F2,U+F3,U+F4,U+F5,U+F6,U+F7,U+F8,U+F9,U+FA,U+FB,U+FC,U+FD,U+FE,U+FF,U+100,U+101,U+102,U+103,U+104,U+105,U+106,U+107,U+10C,U+10D,U+10E,U+10F,U+110,U+111,U+112,U+113,U+116,U+117,U+118,U+119,U+11A,U+11B,U+11E,U+11F,U+122,U+123,U+12A,U+12B,U+12E,U+12F,U+130,U+131,U+136,U+137,U+139,U+13A,U+13B,U+13C,U+13D,U+13E,U+141,U+142,U+143,U+144,U+145,U+146,U+147,U+148,U+14C,U+14D,U+150,U+151,U+152,U+153,U+154,U+155,U+156,U+157,U+158,U+159,U+15A,U+15B,U+15E,U+15F,U+160,U+161,U+162,U+163,U+164,U+165,U+16A,U+16B,U+16E,U+16F,U+170,U+171,U+172,U+173,U+178,U+179,U+17A,U+17B,U+17C,U+17D,U+17E,U+192,U+218,U+219,U+21A,U+21B,U+237,U+2C6,U+2C7,U+2C9,U+2D8,U+2D9,U+2DA,U+2DB,U+2DC,U+2DD,U+300,U+301,U+302,U+303,U+304,U+306,U+307,U+308,U+30A,U+30B,U+30C,U+326,U+327,U+328,U+3C0,U+1E9E,U+2013,U+2014,U+2018,U+2019,U+201A,U+201C,U+201D,U+201E,U+2020,U+2021,U+2022,U+2026,U+2030,U+2039,U+203A,U+2044,U+2070,U+2074,U+2080,U+2081,U+2082,U+2083,U+2084,U+20AC,U+20BA,U+20BD,U+2113,U+2122,U+2126,U+212E,U+2202,U+2206,U+220F,U+2211,U+2212,U+2215,U+2219,U+221A,U+221E,U+222B,U+2248,U+2260,U+2264,U+2265,U+25CA,U+F000,U+FB01,U+FB02
Created: /Users/you/Documents/codez/Oxanium-inverse-subset.woff2
Inverse subset generation complete.

Note

Because Glyphhanger always uses -subset in the name, the new subset generated by this script will have this name temporarily before moved to the -o directory.

If you've just created a -subset with Glyphhanger in the same directory, it will be overwritten as a result of this script, so please rename it first or move it to a different directory.

Announcement

For an announcement and more on Unicode ranges, including some test pages, see https://www.phpied.com/inverse-font-subsetting/