Icon bundles for Iconify for Svelte

This tutorial is a part of Iconify icon bundles tutorial and Iconify for Svelte documentation.

Icon bundle is the easiest way to make Iconify components work without internet access. Instead of loading icon data from Iconify API, you can provide icon by loading icon bundle.

Use cases for icon bundles:

  • Faster rendering. Preload frequently used icons, so icon data is available immediately and icons render instantly.
  • Render icons offline without relying on Iconify API.
  • Smaller bundle size when importing bundle than importing icons one by one.

Generating data

If you came here from Iconify for Svelte documentation, you need to read icon bundles tutorial first to understand what icon bundles are.

Difference with SVG framework

Usage is almost identical to using icon bundles in SVG framework with one major difference: bundle requires importing Svelte component.

That one difference completely changes how bundle behaves. While in SVG framework bundle can be in a separately included script, in Svelte component bundle is similar to any other part of your application that uses Svelte component. That is, it must be bundled with your application.

Bundle example

This is an example of icon bundle:

import { addCollection } from '@iconify/svelte';

// Load icons
   prefix: 'mdi-light',
   icons: {
       account: {
           body: '<path d="M11.5 14c4.142 0 7.5 1.567 7.5 3.5V20H4v-2.5c0-1.933 3.358-3.5 7.5-3.5zm6.5 3.5c0-1.38-2.91-2.5-6.5-2.5S5 16.12 5 17.5V19h13v-1.5zM11.5 5a3.5 3.5 0 1 1 0 7a3.5 3.5 0 0 1 0-7zm0 1a2.5 2.5 0 1 0 0 5a2.5 2.5 0 0 0 0-5z" fill="currentColor"/>',
       home: {
           body: '<path d="M16 8.414l-4.5-4.5L4.414 11H6v8h3v-6h5v6h3v-8h1.586L17 9.414V6h-1v2.414zM2 12l9.5-9.5L15 6V5h3v4l3 3h-3v7.998h-5v-6h-3v6H5V12H2z" fill="currentColor"/>',
   width: 24,
   height: 24,

You can add that code in any file that is bundled in your application, or you can create a new bundle file that you import somewhere in your application:

import './bundle.js';

CommonJS module

If you want to use require(), replace first line of bundle with this:

const { addCollection } = require('@iconify/svelte');

and use require() to load bundle:


How to automate build process?

Manually creating files with icon data is tedious. Good news, it is easy to automate.

You need to create a simple script that does the following:

  1. Get icon data.
  2. Wrap it in a necessary code (import addCollection from component, wrap data in addCollection calls).
  3. Save it to a file, which is imported in your application.

See examples for scripts you can use.