isabella232 / graphcms-image

Universal lazy-loading, auto-compressed images with React and GraphCMS

graphcms-image

Inspired by and based on gatsby-image

Demo

• Resize large images to the size needed by your design
• Generate multiple smaller images to make sure devices download the optimal-sized one.
• Automatically compress and optimize your image with the powerful Filestack API
• Efficiently lazy load images to speed initial page load and save bandwidth
• Use the "blur-up" technique or solid background color to show a preview of the image while it loads
• Hold the image position so your page doesn't jump while images load

This is what a component using graphcms-image looks like.

import React, { Fragment } from "react";
import GraphImg from "graphcms-image";

export default ({ data: { loading, images } }) => {
  if (!loading) {
    return (
      <Fragment>
        {images.map(image => (
          <GraphImg image={image} maxWidth={800} />
        ))}
      </Fragment>
    )
  }
  return <h1>Loading...</h1>
};

export const query = graphql`
  query getAssets {
    images: allAssets {
      handle
      width
      height
    }
  }
`;

Props

Name	Type	Description
image	object	An object of shape { handle, width, height }. Handle is an identifier required to display the image and both width and height are required to display a correct placeholder and aspect ratio for the image. You can get all 3 by just putting all 3 in your image-getting query.
maxWidth	number	Maximum width you'd like your image to take up. (ex. If your image container is resizing dynamically up to a width of 1200, put it as a maxWidth)
fadeIn	bool	Do you want your image to fade in on load? Defaults to true
fit	"clip"|"crop"|"scale"|"max"	When resizing the image, how would you like it to fit the new dimensions? Defaults to crop. You can read more about resizing here
withWebp	bool	If webp is supported by the browser, the images will be served with .webp extension. (Recommended)
transforms	array	Array of strings, each representing a separate Filestack transform, eg. ['sharpen=amount:5', 'quality=value:75']
title	string	Passed to the img element
alt	string	Passed to the img element
className	string|object	Passed to the wrapper div. Object is needed to support Glamor's css prop
outerWrapperClassName	string|object	Passed to the outer wrapper div. Object is needed to support Glamor's css prop
style	object	Spread into the default styles in the wrapper div
position	string	Defaults to relative. Pass in absolute to make the component absolute positioned
blurryPlaceholder	bool	Would you like to display a blurry placeholder for your loading image? Defaults to true.
backgroundColor	string|bool	Set a colored background placeholder. If true, uses "lightgray" for the color. You can also pass in any valid color string.
onLoad	func	A callback that is called when the full-size image has loaded.
baseURI	string	Set the base src from where the images are requested. Base URI Defaults to https://media.graphcms.com