Awesome

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