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0.7.0 • Public • Published

React Progressive Graceful Image

Note: I published this interesting article on medium to explain the idea and motivation behind building this npm package. And a small code snippet to make best use of it.


  • [0.7.0] : Allow ^v18 of react and react-dom as peer dependencies, add + fix props types.
  • [0.6.14] : Allow ^v17 of react and react-dom as peer dependencies.
  • [0.6.13] : onError bug-fix to works as expected.

Note: This is a forked repo from So, all usage are similar to that.

I am adding two new features:

  • Graceful loading
  • Lazy loading

similar to, but with a different approach(for better performance and optimization). So, please check usage of 4 newly introduced props (noRetry, noLazyLoad, rootMargin, threshold) from the props table below.

[TODO] :

  • [x] Use of Intersection Observer for Lazy Loading (Better Performance)
  • [x] Use of navigator.onLine in place of current retry strategy (Optimization)
  • [x] Introduce rootMargin and threshold props for Intersection Observer options.
  • [x] Add more Code Sandbox example links
  • [x] Remove ref from child function.
  • [ ] Remove dependency of @researchgate/react-intersection-observer

Note: npm i intersection-observer, if polyfill is required, I have removed it to keep the library lightweight.

Maintenance Status

react-progressive-graceful-image React component for progressive image loading


$ npm i react-progressive-graceful-image


Simple - CodeSandbox

<ProgressiveImage src="large-image.jpg" placeholder="tiny-image.jpg">
  {(src) => <img src={src} alt="an image" />}

With Delay - CodeSandbox

  {(src) => <img src={src} alt="an image" />}

With loading argument - CodeSandbox

<ProgressiveImage src="large-image.jpg" placeholder="tiny-image.jpg">
  {(src, loading) => (
    <img style={{ opacity: loading ? 0.5 : 1 }} src={src} alt="an image" />

With srcSet - CodeSandbox

    srcSet: 'small.jpg 320w, medium.jpg 700w, large.jpg 2000w',
    sizes: '(max-width: 2000px) 100vw, 2000px'
  {(src, loading, srcSetData) => (
      alt="an image"

With Intersection Observer Options - CodeSandbox

  rootMargin="0% 0% 0%"
  {(src) => <img src={src} alt="an image" />}

Component As Placeholder - CodeSandbox

If you want to use a component, such as a loading spinner, as a placeholder, you can make use of the loading argument in the render callback. It will be true while the main image is loading and false once it has fully loaded. Keep in mind that the placeholder props is required, so you will need to explicitly declare an empty string as it's value if you plan on using a component in the render callback.

const dominantImageColor = '#86356B';
const placeholder = (
    style={{ backgroundColor: dominantImageColor, height: 300, width: 500 }}

<ProgressiveImage src="large-image.jpg" placeholder="" >
  {(src, loading) => {
    return loading ? placeholder : <img src={src} alt="an image" />;

Progressive Enhancement and No JavaScript

Since this component relies on JavaScript to replace the placeholder src with the full image src, you should use a fallback image if your application supports environments that do not have JavaScript enabled or is progressively enhanced.

You can do this by adding the fallback image inside of a <noscript> tag in the render callback you provide as the ProgressiveImage component's child.

<ProgressiveImage src="large-image.jpg" placeholder="tiny-image.jpg" >
  {(src) => {
    return (
        <img className="progressive-image" src={src} />
          <img className="progressive-image no-script" src="large-image.jpg" />


Name Type Required Description
children function true returns src, loading, and srcSetData
delay number false time in milliseconds before src image is loaded
onError function false returns error event
placeholder string | React.Node true the img src or React Component for the placeholder image
src string true the src of the main image
srcSetData {srcSet: "string", sizes: "string" } false srcset and sizes to be applied to the image
noRetry boolean false flag to turn off re-trying (default: false)
noLazyLoad boolean false flag to turn off lazy loading (default: false)
rootMargin string false Intersection Observer Option (eg: "0% 0% 25%" -default)
threshold number|Array<number> false Intersection Observer Option (eg: [0] -default)

Maintenance Status

Stable: Formidable is not planning to develop any new features for this project. We are still responding to bug reports and security concerns. We are still welcoming PRs for this project, but PRs that include new features should be small and easy to integrate and should not include breaking changes.


Licensed under the MIT License, Copyright © 2019-present.

See LICENSE for more information.

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  • sanishkr