Iconify

Overview

Iconify is an open-source unified icon framework created by Vjacheslav Trushkin (Cyberalien) in 2019, falling under the design assets category. It aggregates 200,000+ SVG vector icons from 100+ open-source icon sets and provides on-demand loading, cross-framework components and the Iconify API, making it a common choice for standardizing icons in frontend projects.

The core idea of Iconify is "one framework for all icons": developers use a unified API or components instead of switching between icon libraries such as Font Awesome, Material Design and Lucide. All icons come from open-source projects under MIT or other open licenses; the on-demand loading mechanism only pulls icons actually used, dramatically reducing bundle size. Since its 2019 release, Iconify has grown a plugin ecosystem including Figma, VS Code and Tailwind CSS, and is one of the popular open-source icon projects on GitHub.

Key Strengths

• Unified aggregation of many sets: 100+ open-source icon sets and 200,000+ SVG icons accessed in one place, without switching between libraries.
• On-demand loading shrinks bundles: only icons actually used are loaded, cutting bundle size by 50% or more in common scenarios, per the website performance optimization.
• Cross-framework components: official components for React, Vue, Svelte and Angular, plus plain HTML and Web Components, with low integration cost.
• Free and open source: MIT-licensed and completely free for commercial projects at $0 licensing cost with no vendor lock-in.
• Complete plugin ecosystem: Figma, VS Code and Tailwind CSS plugins across 3 categories covering design and development, per the design system components.

Product Ecosystem

Iconify Core Framework

A unified SVG icon framework supporting on-demand loading, automatic adaptation and cross-framework use, forming the base layer of icon management.

Iconify API

An icon query and fetch API supporting custom icon set uploads and CDN acceleration, for applications that need icons fetched dynamically.

Framework Components

Official components for React, Vue, Svelte and Angular allow importing individual icons on demand to keep bundles small.

Plugin Ecosystem

The Figma plugin imports icons in design files, the VS Code plugin provides code completion, and the Tailwind CSS plugin simplifies frontend integration.

Limitations

• Relies on the public API: some usage depends on network requests to the official API, so offline or intranet environments need a self-hosted service.
• Updates depend on upstream: each icon set updates at the pace of upstream projects, so new icons or styles can lag.
• No GUI management: aimed at developers, so non-technical users lack a visual browse and management interface and face a higher learning curve.
• Mixed quality across sets: icon sets vary in style and quality, requiring manual curation to keep visuals consistent when mixing.

Use Cases

• Unified icons in frontend projects (★★★★★): multi-set aggregation plus on-demand loading suits web projects that standardize icons.
• Multi-framework projects （★★★★☆）: cross-framework components support React, Vue, Svelte and Angular for flexible teams.
• Performance-sensitive scenarios （★★★★☆）: on-demand loading sharply cuts bundle size, combined with image optimization for overall speed.
• Non-technical users （★★☆☆☆）: there is no GUI, so designers should pair it with the Figma plugin.

Pricing

Note: Iconify and its API are free and open source; the main cost is engineering effort for self-hosting or support.

FAQ

• Can Iconify be used commercially for free? Yes, Iconify is fully free under the MIT license, and most aggregated icon sets follow open licenses for free commercial use.; see icon libraries and open-source licensing.

• How do I reduce bundle size? Use on-demand loading to import only the icons actually used via framework components, per the website performance optimization.

• Which frontend frameworks are supported? React, Vue, Svelte and Angular components are supported, plus plain HTML and Web Components.; see icon integration and front-end frameworks.

• Are icon sets updated promptly? Each icon set updates at the pace of upstream projects, with mainstream sets updating quickly; self-host the API or sync manually if you are update-sensitive.; see icon resource updates and maintenance.

• How does it differ from Font Awesome? Iconify aggregates many sets and is framework-agnostic, while Font Awesome is a single library with a paid tier; choose by need.