# filamentgroup/glyphhanger

Your web font utility belt. It can subset web fonts. It can find unicode-ranges for you automatically. It makes julienne fries.

Repository: https://github.com/filamentgroup/glyphhanger
Canonical: https://ross.abutalabs.com/products/glyphhanger
Language: JavaScript
License: MIT
License Family: permissive
Topics: webfonts, web-fonts, glyphs, unicode, spider, subset, subsetting, font
Archived: true
Last push: 2021-07-01T15:32:31+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3526, "days_push": 1889, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1123, forks 54 (observed 2026-08-28T04:03:40.475168+00:00)

## What it is
Glyphhanger is a Node.js CLI tool for web font optimization. It crawls web pages to determine which unicode-ranges are actually used, and can automatically subset web fonts accordingly.

## Use cases
- subset web fonts to only the glyphs my site uses
- find which unicode-ranges a web page needs
- generate unicode-range splits for font-family fallbacks
- reduce web font file sizes for faster page loads
- audit font usage across a website
- automate font subsetting in a build pipeline

## When to choose
- you want to shrink web font payloads by subsetting to used glyphs
- you need automatic unicode-range detection from live web pages
- you want a scriptable CLI for font optimization in CI

## When to avoid
- you need a GUI font editor
- you work with non-web font formats like system font management
- you need actively maintained tooling with recent releases

## Facets
- artifact type: cli-tool
- maturity: maintenance
- function: cli, developer-tools, web-scraping
- domain: web-development, frontend, developer-tools
- platform: cli, cross-platform
- tags: webfonts, font-subsetting, unicode-ranges, font-optimization, performance, command-line, nodejs

## Member repositories
- filamentgroup/glyphhanger (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:40.475168+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:40:52.191078+00:00, confidence not recorded.
  - readme: https://github.com/filamentgroup/glyphhanger (fetched 2026-08-28T04:03:40.475168+00:00, sha e892337fadba)
- Data as of 2026-08-30T08:39:29.467469+00:00.