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Image Comparer

<sl-image-comparer> | SlImageComparer
Since 2.0 stable

Compare visual differences between similar photos with a sliding panel.

For best results, use images that share the same dimensions. The slider can be controlled by dragging or pressing the left and right arrow keys. (Tip: press shift + arrows to move the slider in larger intervals, or home + end to jump to the beginning or end.)

Grayscale version of kittens in a basket looking around. Color version of kittens in a basket looking around. 
<sl-image-comparer>
  <img
    slot="before"
    src="https://images.unsplash.com/photo-1517331156700-3c241d2b4d83?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=80&sat=-100&bri=-5"
    alt="Grayscale version of kittens in a basket looking around."
  />
  <img
    slot="after"
    src="https://images.unsplash.com/photo-1517331156700-3c241d2b4d83?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=80"
    alt="Color version of kittens in a basket looking around."
  />
</sl-image-comparer>

import SlImageComparer from '@shoelace-style/shoelace/dist/react/image-comparer';

const App = () => (
  <SlImageComparer>
    <img
      slot="before"
      src="https://images.unsplash.com/photo-1517331156700-3c241d2b4d83?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=80&sat=-100&bri=-5"
      alt="Grayscale version of kittens in a basket looking around."
    />
    <img
      slot="after"
      src="https://images.unsplash.com/photo-1517331156700-3c241d2b4d83?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=800&q=80"
      alt="Color version of kittens in a basket looking around."
    />
  </SlImageComparer>
);

Examples

Initial Position

Use the position attribute to set the initial position of the slider. This is a percentage from 0 to 100.

A person sitting on bricks wearing untied boots. A person sitting on a yellow curb tying shoelaces on a boot. 
<sl-image-comparer position="25">
  <img
    slot="before"
    src="https://images.unsplash.com/photo-1520903074185-8eca362b3dce?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1200&q=80"
    alt="A person sitting on bricks wearing untied boots."
  />
  <img
    slot="after"
    src="https://images.unsplash.com/photo-1520640023173-50a135e35804?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2250&q=80"
    alt="A person sitting on a yellow curb tying shoelaces on a boot."
  />
</sl-image-comparer>

import SlImageComparer from '@shoelace-style/shoelace/dist/react/image-comparer';

const App = () => (
  <SlImageComparer position={25}>
    <img
      slot="before"
      src="https://images.unsplash.com/photo-1520903074185-8eca362b3dce?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=1200&q=80"
      alt="A person sitting on bricks wearing untied boots."
    />
    <img
      slot="after"
      src="https://images.unsplash.com/photo-1520640023173-50a135e35804?ixlib=rb-1.2.1&ixid=eyJhcHBfaWQiOjEyMDd9&auto=format&fit=crop&w=2250&q=80"
      alt="A person sitting on a yellow curb tying shoelaces on a boot."
    />
  </SlImageComparer>
);

Importing

If you’re using the autoloader or the traditional loader, you can ignore this section. Otherwise, feel free to use any of the following snippets to cherry pick this component.

Script Import Bundler React

To import this component from the CDN using a script tag: 

<script type="module" src="https://cdn.jsdelivr.net/npm/@viur/shoelace@1.0.8-v2.18.0/cdn/components/image-comparer/image-comparer.js"></script>

To import this component from the CDN using a JavaScript import: 

import 'https://cdn.jsdelivr.net/npm/@viur/shoelace@1.0.8-v2.18.0/cdn/components/image-comparer/image-comparer.js';

To import this component using a bundler:

import '@viur/shoelace/dist/components/image-comparer/image-comparer.js';

To import this component as a React component:

import SlImageComparer from '@viur/shoelace/dist/react/image-comparer';

Slots

Name Description
before The before image, an <img> or <svg> element.
after The after image, an <img> or <svg> element.
handle The icon used inside the handle.

Learn more about using slots.

Properties

Name Description Reflects Type Default
position The position of the divider as a percentage. number 50
updateComplete A read-only promise that resolves when the component has finished updating.

Learn more about attributes and properties.

Events

Name React Event Description Event Detail
sl-change onSlChange Emitted when the position changes. -

Learn more about events.

Custom Properties

Name Description Default
--divider-width The width of the dividing line.
--handle-size The size of the compare handle.

Learn more about customizing CSS custom properties.

Parts

Name Description
base The component’s base wrapper.
before The container that wraps the before image.
after The container that wraps the after image.
divider The divider that separates the images.
handle The handle that the user drags to expose the after image.

Learn more about customizing CSS parts.

Dependencies

This component automatically imports the following dependencies.

  • <sl-icon>