# geongeorge/i-hate-regex

The code for iHateregex.io 😈 - The Regex Cheat Sheet

Repository: https://github.com/geongeorge/i-hate-regex
Canonical: https://ross.abutalabs.com/products/i-hate-regex
Homepage: https://iHateRegex.io
Language: TypeScript
License Family: other
Topics: regex, nuxt, vue, tailwindcss
Last push: 2026-08-10T07:02:43+00:00

## Health v2 (maintenance only)
Score: 66/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 97, release rhythm 8, longevity 100
- inputs: {"age_days": 2587, "days_push": 23, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- 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 4556, forks 318 (observed 2026-08-28T04:08:53.389101+00:00)

## What it is
iHateRegex.io is a web application and regex cheat sheet that helps users understand, test, and share regular expressions. It provides visual railroad diagrams, plain-English explanations, live match highlighting, and a community library of practical patterns.

## Use cases
- find a regex for validating email addresses
- understand what a regex pattern does
- test a regex against sample strings
- visualize a regex as a railroad diagram
- share regex patterns with a team
- learn how to write regular expressions
- find regex for phone numbers or IP addresses

## When to choose
- you need a quick, well-documented regex for common validation tasks
- you want to visually understand how a regex works
- you want a playground to test and share regexes

## When to avoid
- you need a programmatic regex library to embed in your code
- you need offline regex tooling without a web app
- you need advanced regex features beyond testing and visualization

## Facets
- artifact type: application
- maturity: active
- function: developer-tools, documentation, search-engine, parser
- domain: developer-tools, web-development, education, documentation
- platform: self-hosted
- tags: regex, cheatsheet, railroad-diagram, playground, nuxt, vue, tailwindcss, typescript, web-server, nodejs

## Member repositories
- geongeorge/i-hate-regex (main) score 66

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:53.389101+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 2026-08-29T18:20:02.297779+00:00, confidence not recorded.
  - readme: https://github.com/geongeorge/i-hate-regex (fetched 2026-08-28T04:08:53.389101+00:00, sha e4f92b960d8c)
  - homepage: https://iHateRegex.io (fetched 2026-08-29T09:05:44.720009+00:00, sha 72336ea8e74d)
- Data as of 2026-08-30T08:39:29.467469+00:00.