# nk-o/jarallax

Parallax scrolling for modern browsers

Repository: https://github.com/nk-o/jarallax
Canonical: https://ross.abutalabs.com/products/jarallax
Homepage: https://jarallax.nkdev.info
Language: TypeScript
License: MIT
License Family: permissive
Topics: image-background, parallax, scrolling, video-background, video, youtube, image, vimeo
Last push: 2026-08-18T08:23:23+00:00

## Health v2 (maintenance only)
Score: 76/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 98, release rhythm 35, longevity 100
- inputs: {"age_days": 3996, "days_push": 15, "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 1459, forks 217 (observed 2026-08-28T04:04:47.232962+00:00)

## What it is
Jarallax is a dependency-free JavaScript library that adds smooth parallax scrolling effects to background images, <img> tags, inline elements, and background videos from YouTube, Vimeo, or self-hosted sources. It ships ESM/UMD bundles, supports jQuery and React/Next.js usage, and includes a companion WordPress plugin.

## Use cases
- add parallax scrolling to hero section background images
- create parallax video backgrounds with YouTube or Vimeo
- animate inline elements on scroll
- add parallax backgrounds to a WordPress site
- smooth scrolling background effects without jQuery dependencies
- use parallax in a React or Next.js project

## When to choose
- you need lightweight, dependency-free parallax for images or videos
- you want YouTube/Vimeo/self-hosted video backgrounds with parallax
- you need ESM, UMD, jQuery, or React integration options

## When to avoid
- you need complex scroll-driven animations beyond simple parallax
- you require a full animation library like GSAP with timelines and triggers
- your project targets legacy browsers unsupported by the library

## Facets
- artifact type: library
- maturity: active
- function: animation, ui-components, video-processing, image-processing
- domain: web-development, frontend, web-design
- platform: browser, cross-platform
- tags: parallax, scrolling-effects, background-video, youtube, vimeo, zero-dependencies, jquery-support, react, nodejs

## Member repositories
- nk-o/jarallax (main) score 76

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:47.232962+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 2026-08-30T04:35:28.134209+00:00, confidence not recorded.
  - readme: https://github.com/nk-o/jarallax (fetched 2026-08-28T04:04:47.232962+00:00, sha c16438e138bd)
  - homepage: https://jarallax.nkdev.info (fetched 2026-08-29T11:44:37.012159+00:00, sha 08441c027a35)
  - registry_npm: https://registry.npmjs.org/jarallax (fetched 2026-08-29T11:44:37.021233+00:00, sha 55bff022bcd8)
- Data as of 2026-08-30T08:39:29.467469+00:00.