# produck/svg-captcha

generate svg captcha in node

Repository: https://github.com/produck/svg-captcha
Canonical: https://ross.abutalabs.com/products/svg-captcha
Language: JavaScript
License: MIT
License Family: permissive
Topics: captcha, svg-captcha, nodejs-captcha, captcha-alternative, captcha-generator
Last push: 2024-02-04T23:20:25+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3771, "days_push": 941, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1937, forks 178 (observed 2026-08-28T04:05:57.097641+00:00)

## What it is
A Node.js library that generates SVG-based CAPTCHA images without native C++ dependencies. It produces random text or math-expression captchas with configurable size, noise, colors, and fonts.

## Use cases
- generate captcha images in node.js
- replace google recaptcha with self-hosted captcha
- add captcha to express login form
- generate math expression captcha
- create svg captcha without c++ addon dependencies

## When to choose
- you need a lightweight captcha in a Node.js/Express app
- you cannot or do not want to use Google reCAPTCHA
- native addon compilation is a problem in your environment

## When to avoid
- you need image-based captchas in PNG/JPEG format
- you want a fully managed anti-bot service with advanced bot detection
- your stack is not Node.js

## Facets
- artifact type: library
- maturity: maintenance
- function: security, image-processing, http-server
- domain: web-development, security, backend
- platform: -
- tags: captcha, svg, bot-protection, no-native-dependencies, express, nodejs

## Member repositories
- produck/svg-captcha (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:57.097641+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 2026-08-30T03:08:24.836494+00:00, confidence not recorded.
  - readme: https://github.com/produck/svg-captcha (fetched 2026-08-28T04:05:57.097641+00:00, sha a00d5a9ad944)
- Data as of 2026-08-30T08:39:29.467469+00:00.