# markdalgleish/stellar.js

Stellar.js - Parallax scrolling made easy

Repository: https://github.com/markdalgleish/stellar.js
Canonical: https://ross.abutalabs.com/products/stellarjs
Homepage: http://markdalgleish.com/projects/stellar.js/
Language: JavaScript
License: MIT
License Family: permissive
Last push: 2022-05-13T22:06:58+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": 5354, "days_push": 1573, "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 4590, forks 1284 (observed 2026-08-28T04:08:54.670021+00:00)

## What it is
Stellar.js is a jQuery plugin that adds parallax scrolling effects to any scrolling element via simple data attributes. It repositions elements and background images at configurable speed ratios as the page scrolls.

## Use cases
- add parallax scrolling to a website
- make background images move at a different speed on scroll
- create depth effects on a landing page
- animate elements at custom scroll ratios
- add parallax effects to horizontal scrolling sections

## When to choose
- you are already using jQuery and need simple parallax effects
- you want declarative data-attribute-based parallax configuration
- you need parallax on desktop browsers with legacy jQuery stacks

## When to avoid
- you are starting a modern project without jQuery
- you need maintained software with active support
- you need high-performance parallax on mobile WebKit
- you want modern scroll-animation libraries with better performance

## Facets
- artifact type: plugin
- maturity: abandoned
- function: animation, ui-components
- domain: web-development, frontend, web-design
- platform: browser, cross-platform
- tags: jquery-plugin, parallax-scrolling, scroll-effects, unmaintained

## Member repositories
- markdalgleish/stellar.js (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:54.670021+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 2026-08-29T18:19:50.996489+00:00, confidence not recorded.
  - readme: https://github.com/markdalgleish/stellar.js (fetched 2026-08-28T04:08:54.670021+00:00, sha 69bb9b41f168)
  - homepage: http://markdalgleish.com/projects/stellar.js/ (fetched 2026-08-29T09:05:09.462279+00:00, sha 64b6c6e245c7)
  - site_page: http://markdalgleish.com/projects/stellar.js/docs (fetched 2026-08-29T09:05:09.464713+00:00, sha 8c2640a82e42)
- Data as of 2026-08-30T08:39:29.467469+00:00.