svelte-magnifier

This is a Svelte adaptation of react-magnifier, which is the original version. Someone else made a Vue version, called vue-magnifier, as well.

Svelte image magnifier component

• Simple and customizable
• Supports touch screens
• Allows different files for large image and magnifying glass (e.g. thumbnail and high-resolution image)

Demo

Usage

Install the package using NPM:

npm i -D svelte-magnifier

Add the component to your Svelte application:

<script>
	import { Magnifier } from 'svelte-magnifier';
</script>

<Magnifier src="path/to/image.jpg" width="500px" />

Configuration

Prop	Type	Default	Description
src (required)	String	–	URL/path of the large image
alt (required)	String	–	alt attribute of image
height	String	'auto'	Image height (absolute or relative values possible)
width	String	'100%'	Image width (absolute or relative values possible)
className	String	''	Class which will be applied to the image wrapper
zoomImgSrc	String	–	URL/path of the image inside the magnifying glass (if not specified, the large image will be used)
zoomFactor	Number	1.5	Factor by which the zoom image will be scaled (based on the size of the large image)
mgWidth	Number	150	Width of the magnifying glass in px
mgHeight	Number	150	Height of the magnifying glass in px
mgBorderWidth	Number	2	Border width of the magnifying glass in px
mgShape	String	'circle'	Shape of the magnifying glass (possible values: 'circle', 'square')
mgShowOverflow	Boolean	true	Set this to false to cut off the magnifying glass at the image borders. When disabling mgShowOverflow, it's recommended that you also set all offsets to 0
mgMouseOffsetX	Number	0	Horizontal offset of the magnifying glass in px when hovering with a mouse
mgMouseOffsetY	Number	0	Vertical offset of the magnifying glass in px when hovering with a mouse
mgTouchOffsetX	Number	-50	Horizontal offset of the magnifying glass in px when dragging on a touch screen
mgTouchOffsetY	Number	-50	Vertical offset of the magnifying glass in px when dragging on a touch screen

Any other props will be passed down to the <img> element.

Custom styling

<style>
	:global(.magnifier) {
		/* Styles for <div> around image and magnifying glass */
	}
	:global(.magnifier-image) {
		/* Styles for large image */
	}
	:global(.magnifying-glass) {
		/* Styles for magnifying glass */
	}
</style>

Developing

Once you've created a project and installed dependencies with pnpm install, start a development server:

npm run dev

# or start the server and open the app in a new browser tab
npm run dev -- --open