# wentin/underlineJS

Pushing the boundary of browser typography rendering!

Repository: https://github.com/wentin/underlineJS
Canonical: https://ross.abutalabs.com/products/underlinejs
Homepage: https://underlinejs.wentin.net
Language: JavaScript
License Family: other
Last push: 2020-12-02T03:46:12+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4291, "days_push": 2100, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2218, forks 78 (observed 2026-08-28T04:06:27.342029+00:00)

## What it is
A JavaScript library that draws and animates pixel-perfect, typographically optimized text underlines in the browser, with features like descender holes and golden-ratio positioning. It is an exploratory project pushing web typography boundaries and informing a CSS4 proposal to the W3C.

## Use cases
- render beautiful animated underlines under text links
- draw underlines that skip around descenders
- achieve pixel-perfect underline rendering on retina displays
- explore advanced web typography effects
- prototype proposed CSS text-underline properties

## When to choose
- you want decorative, typographically refined underlines beyond what CSS text-decoration offers
- you're building a design-focused site where link underline aesthetics matter
- you want to demo or experiment with proposed CSS4 underline rules

## When to avoid
- you just need standard link underlines - native CSS text-decoration is sufficient
- you need a maintained, production-supported library with a license
- you need broad browser support guarantees or active development

## Facets
- artifact type: library
- maturity: maintenance
- function: animation, ui-components, graphics
- domain: web-development, frontend, web-design
- platform: browser
- tags: typography, text-underline, canvas-rendering, css-proposal, experimental-typography, web-server

## Member repositories
- wentin/underlineJS (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:27.342029+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 2026-08-30T02:45:55.014644+00:00, confidence not recorded.
  - readme: https://github.com/wentin/underlineJS (fetched 2026-08-28T04:06:27.342029+00:00, sha 08594cdcb09a)
  - homepage: https://underlinejs.wentin.net (fetched 2026-08-29T10:26:09.733184+00:00, sha b2bf03710c3e)
- Data as of 2026-08-30T08:39:29.467469+00:00.