# Paul-Browne/lazyestload.js

load images only when they are in (and remain in) the viewport

Repository: https://github.com/Paul-Browne/lazyestload.js
Canonical: https://ross.abutalabs.com/products/lazyestloadjs
Homepage: https://rawgit.com/Paul-Browne/lazyestload.js/master/dist/lazyestload.html
Language: HTML
License Family: other
Topics: lazyload-images, javascript, progressive-enhancement
Last push: 2022-12-08T11:34:08+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 2951, "days_push": 1364, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1404, forks 79 (observed 2026-08-28T04:04:38.017338+00:00)

## What it is
A tiny (~400 byte) JavaScript library that lazy-loads images only when they are in the viewport and the user has stopped scrolling. It supports data-src, data-srcset, and picture/source elements with placeholder-based progressive enhancement.

## Use cases
- lazy load images on scroll
- defer image loading until user stops scrolling
- reduce page bandwidth by loading only visible images
- blur-up placeholder image loading
- responsive image lazy loading with srcset

## When to choose
- you want an extremely small dependency-free lazy loading script
- you want to avoid loading images users scroll past
- you need progressive enhancement with placeholder images

## When to avoid
- you need native loading='lazy' features or IntersectionObserver-based libraries with more options
- you need lazy loading for iframes or videos
- the project needs active maintenance or a license

## Facets
- artifact type: library
- maturity: maintenance
- function: image-processing, frontend-framework
- domain: web-development, frontend, performance
- platform: browser
- tags: lazy-loading, progressive-enhancement, images, tiny-library, viewport, javascript

## Member repositories
- Paul-Browne/lazyestload.js (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:38.017338+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 2026-08-30T04:38:49.160829+00:00, confidence not recorded.
  - readme: https://github.com/Paul-Browne/lazyestload.js (fetched 2026-08-28T04:04:38.017338+00:00, sha 075bae4c7df1)
- Data as of 2026-08-30T08:39:29.467469+00:00.