# Okazari/Rythm.js

A javascript library that makes your page dance.

Repository: https://github.com/Okazari/Rythm.js
Canonical: https://ross.abutalabs.com/products/rythmjs
Homepage: https://okazari.github.io/Rythm.js/
Language: JavaScript
License: GPL-3.0
License Family: copyleft
Topics: page-dancing, rythm, javascript, web, audio, pulse, dance, music
Last push: 2024-07-30T12:08:08+00:00

## Health v2 (maintenance only)
Score: 23/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 8, longevity 100
- inputs: {"age_days": 3826, "days_push": 764, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3926, forks 248 (observed 2026-08-28T04:08:29.896417+00:00)

## What it is
Rythm.js is a JavaScript library that makes web page elements animate in sync with music or microphone audio using the Web Audio API. It maps CSS classes to frequency-based dance effects like scale, tilt, blur, and color changes.

## Use cases
- make page elements pulse to music
- create audio-reactive visual effects on a website
- animate a landing page to a song's bass
- visualize microphone input in the browser
- add beat-synced animations to a music player page

## When to choose
- you want fun audio-reactive animations with minimal setup
- you need CSS-class-driven effects synced to audio frequencies
- you want to support both audio files and microphone input

## When to avoid
- you need serious audio analysis or spectrum visualization
- you need performance-critical canvas/WebGL visualizations
- your project requires a permissive license (GPL-3.0)

## Facets
- artifact type: library
- maturity: maintenance
- function: animation, audio-processing, ui-components
- domain: web-development, frontend, graphics
- platform: browser
- tags: audio-reactive, css-animations, web-audio-api, visual-effects, music-visualization, audio, javascript, nodejs

## Member repositories
- Okazari/Rythm.js (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:29.896417+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 2026-08-29T18:24:43.311094+00:00, confidence not recorded.
  - readme: https://github.com/Okazari/Rythm.js (fetched 2026-08-28T04:08:29.896417+00:00, sha 560dbab974fc)
  - homepage: https://okazari.github.io/Rythm.js/ (fetched 2026-08-29T09:18:53.576274+00:00, sha e98592f1fbec)
  - registry_npm: https://registry.npmjs.org/rythm.js (fetched 2026-08-29T09:18:53.587676+00:00, sha 7739c18adde4)
- Data as of 2026-08-30T08:39:29.467469+00:00.