# luis-almeida/unveil

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4,103 stars · 660 forks · JavaScript

## Links

- GitHub: https://github.com/luis-almeida/unveil
- awesome-repositories: https://awesome-repositories.com/repository/luis-almeida-unveil.md

## Description

Unveil is a client-side image loader and jQuery plugin designed to improve page load speeds by managing when and how images are requested. It functions as a lazy loader that defers the loading of images until they enter the visible browser viewport.

The tool includes a high-density display optimizer that detects retina and high-resolution screens. This allows the script to serve high-resolution image assets specifically to compatible devices for improved visual clarity.

The project manages frontend assets by using viewport-based intersection detection and data-attribute mapping to swap placeholders with actual source URLs during scroll events. It utilizes device pixel ratio detection to ensure responsive image delivery based on the user's display density.

## Tags

### Web Development

- [Client-Side Image Loaders](https://awesome-repositories.com/f/web-development/client-side-image-loaders.md) — Acts as a lightweight client-side image loader to improve page load speeds.
- [Browser Pixel Ratio Detection](https://awesome-repositories.com/f/web-development/browser-pixel-ratio-detection.md) — Detects the device pixel ratio to determine the high-DPI capabilities of the browser window.
- [Data Attribute Asset Deferral](https://awesome-repositories.com/f/web-development/data-attribute-asset-deferral.md) — Implements the use of custom data attributes to store image URLs and prevent automatic browser loading.
- [jQuery Plugins](https://awesome-repositories.com/f/web-development/jquery-plugins.md) — Ships as a jQuery plugin to provide cross-browser element selection and event binding.
- [Image Lazy Loading](https://awesome-repositories.com/f/web-development/lazy-loading-libraries/image-lazy-loading.md) — Defers the loading of images until they enter the viewport to optimize initial page load speed. ([source](https://github.com/luis-almeida/unveil#readme))
- [jQuery Image Lazy Loaders](https://awesome-repositories.com/f/web-development/lazy-loading-libraries/image-lazy-loading/jquery-image-lazy-loaders.md) — Provides a jQuery plugin that defers image loading until they enter the visible viewport.
- [Viewport-Based Asset Loading](https://awesome-repositories.com/f/web-development/viewport-based-asset-loading.md) — Defers the loading of images until they intersect the browser viewport during scroll events.
- [Frontend Asset Deferral Management](https://awesome-repositories.com/f/web-development/frontend-asset-deferral-management.md) — Manages the timing and method of loading images to optimize bandwidth and page speed.
- [Deferred Loading](https://awesome-repositories.com/f/web-development/performance-optimizations/initial-page-load-optimizations/deferred-loading.md) — Implements deferred loading of images to reduce initial page load times.

### User Interface & Experience

- [Attribute Source Swapping](https://awesome-repositories.com/f/user-interface-experience/image-viewers/dynamic-source-synchronization/attribute-source-swapping.md) — Swaps placeholder image attributes with actual source URLs via JavaScript to trigger loading.
- [High-Density Image Scaling](https://awesome-repositories.com/f/user-interface-experience/high-density-image-scaling.md) — Optimizes visuals for Retina and HD screens by detecting high-density displays.

### Artificial Intelligence & ML

- [High-Resolution Image Delivery](https://awesome-repositories.com/f/artificial-intelligence-ml/image-super-resolution-models/high-resolution-synthesis/high-resolution-image-delivery.md) — Serves pre-existing high-resolution image variants to devices with high pixel density displays. ([source](https://github.com/luis-almeida/unveil#readme))

### Graphics & Multimedia

- [Pixel-Density Asset Delivery](https://awesome-repositories.com/f/graphics-multimedia/pixel-density-asset-delivery.md) — Provides mechanisms for serving high-resolution images specifically to displays with high pixel density.