# mattdelacdev/WOW

Reveal CSS animation as you scroll down a page

Repository: https://github.com/mattdelacdev/WOW
Canonical: https://ross.abutalabs.com/products/wow
Homepage: https://www.delac.io/WOW/
Language: JavaScript
License Family: other
Last push: 2024-06-24T02:08:52+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": 4630, "days_push": 801, "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 9899, forks 3964 (observed 2026-08-28T04:10:38.723309+00:00)

## What it is
WOW.js is a lightweight (3kb) JavaScript library that reveals CSS animations as the user scrolls down a page. It pairs naturally with Animate.css but can be configured to trigger animations from any CSS animation library.

## Use cases
- reveal elements with animation on scroll
- trigger animate.css animations when scrolling
- add scroll-triggered entrance animations to a website
- animate sections as they enter the viewport
- add fade or slide-in effects without jQuery

## When to choose
- you already use Animate.css and want scroll-triggered reveals
- you need a tiny, dependency-free scroll reveal solution
- you want simple data-attribute configuration for duration, delay, offset, and iterations

## When to avoid
- you need complex parallax or scroll-driven animation timelines
- your project requires a permissive open-source license (it's GPLv3 or paid commercial)
- you prefer modern alternatives like Intersection Observer-based libraries

## Facets
- artifact type: library
- maturity: maintenance
- function: animation, ui-components
- domain: frontend, web-development, web-design
- platform: browser
- tags: scroll-reveal, animate-css, scroll-animations, lightweight, no-jquery, javascript

## Member repositories
- mattdelacdev/WOW (main) score 23

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:10:38.723309+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 2026-08-29T17:20:20.471269+00:00, confidence not recorded.
  - readme: https://github.com/mattdelacdev/WOW (fetched 2026-08-28T04:10:38.723309+00:00, sha 77e6215fa3b4)
  - homepage: https://www.delac.io/WOW/ (fetched 2026-08-29T08:20:31.492332+00:00, sha f13e07ca7922)
  - site_page: https://www.delac.io/WOW/docs.html (fetched 2026-08-29T08:20:31.497817+00:00, sha 26d5f0c9a837)
- Data as of 2026-08-30T08:39:29.467469+00:00.