@iconify/json

What is @iconify/json?

@iconify/json is a package that provides a collection of icon sets in JSON format. It allows developers to access a wide range of icons from different icon sets and use them in their projects. The package is useful for integrating icons into web applications, customizing icon sets, and managing icon data programmatically.

What are @iconify/json's main functionalities?

Accessing Icon Data

This feature allows you to access icon data from various icon sets included in the @iconify/json package. The code sample demonstrates how to require the package and access the Material Design Icons (mdi) set, logging the icon data to the console.

const iconData = require('@iconify/json');
const mdiIcons = iconData['mdi'];
console.log(mdiIcons);

Listing Available Icon Sets

This feature enables you to list all available icon sets included in the @iconify/json package. The code sample shows how to retrieve and log the names of all icon sets.

const iconData = require('@iconify/json');
const availableSets = Object.keys(iconData);
console.log(availableSets);

Retrieving Specific Icon Information

This feature allows you to retrieve information about a specific icon from an icon set. The code sample demonstrates how to access the 'home' icon from the Material Design Icons set and log its data.

const iconData = require('@iconify/json');
const mdiIcons = iconData['mdi'];
const specificIcon = mdiIcons.icons['home'];
console.log(specificIcon);

Other packages similar to @iconify/json

react-icons

react-icons is a popular package that provides a collection of icons for React applications. It includes icons from various icon libraries like Font Awesome, Material Design, and more. Unlike @iconify/json, which provides raw JSON data, react-icons offers React components for easy integration into React projects.

fontawesome

fontawesome is a widely used icon library that offers a comprehensive set of icons. It provides both free and pro versions with different levels of access. While @iconify/json offers a variety of icon sets in JSON format, fontawesome focuses on its own extensive icon collection and provides tools for web and design integration.

heroicons

heroicons is a set of free, MIT-licensed high-quality SVG icons for web projects. It is designed specifically for Tailwind CSS but can be used in any project. Unlike @iconify/json, which aggregates multiple icon sets, heroicons focuses on providing a consistent style of icons for modern web design.

README

Iconify icon sets in JSON format

This is a big collection of open source vector icons, all validated, cleaned up and converted to the same easy to use format.

Even though all icon sets are open source, some icon sets require attribution.

See collections.md for list of icon sets and their licenses.

Validation and clean up

All icons have been processed with Iconify Tools to clean them up.

Icon parsing process includes:

• Very strict validation and clean up. Icons do not contain scripts, even listeners, fonts, raster images, external resources and unknown elements.
• Colors for monotone icons have been replaced with currentColor, making it easy to change icon color by changing text color.
• Icon content has been optimised to reduce its size.

Maintenance

This repository is automatically updated several times a week, so it always contains the latest icons for all icon sets.

Format

Icon sets are stored in IconifyJSON format. TypeScript definition is available in @iconify/types package. Documentation is available on Iconify Documentation website.

To work with icon sets, use Iconify Utils. Utils package works in any JavaScript environment: Node.js, Deno, browsers, isolated JavaScript environments.

Usage

These icons can be used with many tools, plugins and components. They can also be exported as individual SVG files.

See Iconify documentation for more details.

How to get this repository

Instructions below are for Node.js and PHP projects.

Node.js

Run this command to add icons to your project:

npm install --save @iconify/json

Icons will be available in node_modules/@iconify/json

To resolve filename for any json file, use this if you are using CommonJS syntax:

import { locate } from '@iconify/json';

// returns location of mdi-light.json
const mdiLightFilename = locate('mdi-light');

PHP

Install and initialize Composer project. See documentation at https://getcomposer.org

Then open composer.json and add following code:

"require": {
    "php": ">=5.6",
    "iconify/json": "*"
}

then run:

composer install

Icons will be available in vendor/iconify/json/

If you don't use Composer, clone GitHub repository and add necessary autoload code.

To resolve filename for any json file, use this:

// Returns location of mdi-light.json
$mdiLightLocation = \Iconify\IconsJSON\Finder::locate('mdi-light');

Data format

Icons used by Iconify are in directory json, in Iconify JSON format.

Why JSON instead of SVG? There are several reasons for that:

• Easy to store images in bulk.
• Contains only content of icon without <svg> element, making it easy to manipulate content without doing complex parsing. It also makes it easier to create components, such as React icon component, allowing to use framework native SVG element.
• Data can contain additional content: aliases for icons, icon set information, categories/tags/themes.

Why not XML?

• JSON is much easier to parse without additional tools. All languages support it.

Format of json file is very simple:

{
  "prefix": "mdi-light",
  "icons": {
    "icon-name": {
      "body": "<g />",
      "width": 24,
      "height": 24
    }
  },
  "aliases": {
    "icon-alias": {
      "parent": "icon-name"
    }
  }
}

"icons" object contains list of all icons.

Each icon has following properties:

• body: icon body.
• left, top: left and top coordinates of viewBox, default is 0.
• width, height: dimensions of viewBox, default is 16.
• rotate: rotation. Default = 0. Values: 0 = 0deg, 1 = 90deg, 2 = 180deg, 3 = 270deg.
• hFlip: horizontal flip. Boolean value, default = false.
• vFlip: vertical flip. Boolean value, default = false.
• hidden: if set to true, icon is hidden. That means icon was removed from collection for some reason, but it is kept in JSON file to prevent applications that rely on old icon from breaking.

Optional "aliases" object contains list of aliases for icons. Format is similar to "icons" object, but without "body" property and with additional property "parent" that points to parent icon. Transformation properties (rotate, hFlip, vFlip) are merged with parent icon's properties. Any other properties overwrite properties of parent icon.

When multiple icons have the same value, it is moved to root object to reduce duplication:

{
  "prefix": "mdi-light",
  "icons": {
    "icon1": {
      "body": "<g />"
    },
    "icon2": {
      "body": "<g />"
    },
    "icon-20": {
      "body": "<g />",
      "width": 20,
      "height": 20
    }
  },
  "width": 24,
  "height": 24
}

In example above, "icon1" and "icon2" are 24x24, "icon-20" is 20x20.

For more information see developer documentation on https://iconify.design/docs/types/iconify-json.html

Extracting individual SVG icons

You can use Iconify Utils for simple export process or Iconify Tools for more options.

Example using Iconify Utils (TypeScript):

import { promises as fs } from 'fs';

// Function to locate JSON file
import { locate } from '@iconify/json';

// Various functions from Iconify Utils
import { parseIconSet } from '@iconify/utils/lib/icon-set/parse';
import { iconToSVG } from '@iconify/utils/lib/svg/build';
import { defaults } from '@iconify/utils/lib/customisations';

(async () => {
  // Locate icons
  const filename = locate('mdi');

  // Load icon set
  const icons = JSON.parse(await fs.readFile(filename, 'utf8'));

  // Parse all icons
  const exportedSVG: Record<string, string> = Object.create(null);
  parseIconSet(icons, (iconName, iconData) => {
    if (!iconData) {
      // Invalid icon
      console.error(`Error parsing icon ${iconName}`);
      return;
    }

    // Render icon
    const renderData = iconToSVG(iconData, {
      ...defaults,
      height: 'auto',
    });

    // Generate attributes for SVG element
    const svgAttributes: Record<string, string> = {
      'xmlns': 'http://www.w3.org/2000/svg',
      'xmlns:xlink': 'http://www.w3.org/1999/xlink',
      ...renderData.attributes,
    };
    const svgAttributesStr = Object.keys(svgAttributes)
      .map(
        (attr) =>
          // No need to check attributes for special characters, such as quotes,
          // they cannot contain anything that needs escaping.
          `${attr}="${svgAttributes[attr as keyof typeof svgAttributes]}"`
      )
      .join(' ');

    // Generate SVG
    const svg = `<svg ${svgAttributesStr}>${renderData.body}</svg>`;
    exportedSVG[iconName] = svg;
  });

  // Output directory
  const outputDir = 'mdi-export';
  try {
    await fs.mkdir(outputDir, {
      recursive: true,
    });
  } catch (err) {
    //
  }

  // Save all files
  const filenames = Object.keys(exportedSVG);
  for (let i = 0; i < filenames.length; i++) {
    const filename = filenames[i];
    const svg = exportedSVG[filename];
    await fs.writeFile(outputDir + '/' + filename + '.svg', svg, 'utf8');
  }
})();

Same example using Iconify Tools:

import { readFile, writeFile, mkdir } from 'fs';
import { SVG } from '@iconify/tools';

const outputDir = 'mdi-export';

// Create target directory
try {
  await mkdir(outputDir, {
    recursive: true,
  });
} catch (err) {
  //
}

// Locate icons
const filename = locate('mdi');

// Load icon set
const data = JSON.parse(await fs.readFile(filename, 'utf8'));

// Create IconSet instance
const iconSet = new IconSet(data);

// Export all icons
await iconSet.forEach(async (name) => {
  const svg = iconSet.toString(name);
  if (!svg) {
    return;
  }

  // Save to file
  await writeFile(`${outputDir}/${name}.svg`, svg, 'utf8');
  console.log(`Saved ${outputDir}/${name}.svg (${svg.length} bytes)`);
});

See Iconify Tools documentation for more export options.

License

This is collection of icon sets created by various authors.

See collections.md for list of icon sets and their licenses.