# franktisellano/datatype

Datatype is a variable font that turns text into charts.

Repository: https://github.com/franktisellano/datatype
Canonical: https://ross.abutalabs.com/products/datatype
Language: Python
License: NOASSERTION
License Family: other
Last push: 2026-05-02T01:06:01+00:00

## Health v2 (maintenance only)
Score: 64/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 80, release rhythm 72, longevity 14
- inputs: {"age_days": 199, "days_push": 124, "days_rel": 191, "gap_med": 3, "n_releases_24m": 4}
- flags: no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1431, forks 17 (observed 2026-08-28T04:04:42.894660+00:00)

## What it is
Datatype is a variable OpenType font that renders inline charts (bar charts, sparklines, pie charts) from simple text expressions using ligature substitution, requiring no JavaScript. It is built with Python tooling and ships as TTF/WOFF2 files for web and desktop use.

## Use cases
- embed inline charts in text without javascript
- render sparklines in a web page using only css and a font
- add bar charts to desktop documents via opentype ligatures
- show a percentage pie chart inline in a paragraph
- style chart thickness and spacing with variable font axes

## When to choose
- you need lightweight inline data visualization with no JavaScript runtime
- you want charts that work in any app supporting OpenType ligatures
- you need charts that inherit text styling like weight and width

## When to avoid
- you need interactive charts with tooltips or animations
- you need more than 20 data points per chart
- your target environment does not support OpenType ligatures or variable fonts

## Facets
- artifact type: library
- maturity: active
- function: data-visualization, charts, ui-components
- domain: data-visualization, web-development, frontend, developer-tools
- platform: cross-platform, windows, python
- tags: variable-font, opentype, sparklines, bar-charts, pie-charts, typography, no-javascript, inline-charts, font, web-server, macos, linux

## Member repositories
- franktisellano/datatype (main) score 64

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:42.894660+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 2026-08-30T04:37:07.118705+00:00, confidence not recorded.
  - readme: https://github.com/franktisellano/datatype (fetched 2026-08-28T04:04:42.894660+00:00, sha b61a7bc5e524)
- Data as of 2026-08-30T08:39:29.467469+00:00.