tabatkins/railroad-diagrams
:steam_locomotive: A small JS+SVG library for drawing railroad syntax diagrams, like on JSON.org. Now with a Python port! observed · 2026-08-28
Health v2 · maintenance only
69/100
- Activity 81
- Release rhythm 35
- Longevity 100
Flags: no_releases
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5106
- days_rel: n/a
- days_push: 114
- n_releases_24m: 0
Adoption not part of the score
1762 stars · 158 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
A small JS and Python library for generating railroad (syntax) diagrams as SVG or Unicode text, like those on JSON.org. It visually represents grammars in a more readable form than regular expressions or BNF.
Use cases
- generate railroad diagrams for a language grammar
- visualize BNF grammar as syntax diagrams
- create SVG syntax diagrams like JSON.org
- render grammar diagrams as unicode text
- document a DSL with syntax diagrams
- embed railroad diagrams in documentation
When to choose
- you need attractive SVG railroad diagrams for a grammar
- you want both JavaScript and Python support
- you need text-based (unicode) diagram output as well
When to avoid
- you need diagrams that auto-size precisely to long text labels
- you need interactive or editable diagram tooling
- you need general-purpose charting or graph visualization
Facets
library · maturity stable
graphics documentation parser documentation parsers developer-tools web-development python cross-platform railroad-diagrams svg syntax-diagrams grammar-visualization unicode-text-diagrams nodejs
2 sources
- readme: https://github.com/tabatkins/railroad-diagrams · fetched 2026-08-28 · e6a489f0cbb7
- registry_pypi: https://pypi.org/pypi/railroad-diagrams/json · fetched 2026-08-29 · 37b04bff1802
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| tabatkins/railroad-diagrams | main | 69 |
For agents
markdown · JSON · MCP: product_card(name="tabatkins/railroad-diagrams")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem