IonIcons vs Heroicons (2026)
When building modern web applications, choosing the right icon library can significantly impact both your application's aesthetic and its performance. In this comprehensive comparison, we pit IonIcons against Heroicons to help you make an informed decision for your React, Next.js, Vue, or Svelte project.
Together, these libraries represent some of the most popular open-source UI assets available today. IonIcons boasts an impressive 1,300 icons (licensed under MIT), while Heroicons counters with 324 highly-polished icons (licensed under MIT).
Below, we dive into the technical details: bundle size impacts, tree-shaking capabilities, TypeScript support, explicit commercial licensing rules, and real-world implementation examples.
TECHNICAL FEATURE COMPARISON
When comparing IonIcons and Heroicons, developer experience features like TypeScript definitions and tree-shaking support are just as important as the icon count. Review the matrix below to see how they stack up.
LICENSING & COMMERCIAL USE DEEP-DIVE
Legal compliance is critical when selecting assets for a commercial software project. Understanding the nuances between the MIT license used by IonIcons and the MIT license used by Heroicons will ensure your project remains risk-free.
IonIcons uses the MIT License — one of the most permissive open-source licenses. You can use it in any commercial project, modify the icons, and redistribute them freely. The only requirement is preserving the copyright notice in copies of the software.
Heroicons uses the MIT License — one of the most permissive open-source licenses. You can use it in any commercial project, modify the icons, and redistribute them freely. The only requirement is preserving the copyright notice in copies of the software.
PERFORMANCE & BUNDLE SIZE
Modern front-end frameworks like React and Next.js heavily penalize large JavaScript bundles. This makes tree-shaking—the ability of a bundler to remove unused code—a crucial factor when choosing between IonIcons and Heroicons.
- IonIcons Performance: Because IonIcons supports tree-shaking, importing a single icon will only add a tiny fraction of a kilobyte to your final bundle. You can safely install the entire package without performance concerns.
- Heroicons Performance: Similarly, Heroicons is fully tree-shakable. Your Webpack or Turbopack build step will strip out any unused icons, ensuring your First Contentful Paint (FCP) metrics remain exceptional.
REACT IMPORT SYNTAX & INTEGRATION
Here is how you actually write the code to import and use each library in a React or Next.js component. Both libraries offer distinct APIs and integration patterns.
import { HomeOutline } from 'react-ionicons'
export default function App() {
return <HomeOutline color='#6366f1' height='24px' width='24px' />
}import { HomeIcon } from '@heroicons/react/24/outline'
export default function App() {
return <HomeIcon className='h-6 w-6' />
}FINAL VERDICT: WHICH SHOULD YOU CHOOSE?
Still undecided? Here is our definitive breakdown of when to use IonIcons versus when to opt for Heroicons.
FREQUENTLY ASKED QUESTIONS
Which is better: IonIcons or Heroicons?
Choosing between IonIcons and Heroicons depends entirely on your project's technical requirements and design aesthetic. IonIcons provides 1,300 icons and is notable for outline, filled, and sharp variants for every single icon, while Heroicons offers 324 icons and is best known for made by tailwind team.
Are IonIcons and Heroicons completely free to use?
Yes. Both libraries are highly permissive open-source projects. IonIcons is licensed under MIT, and Heroicons is licensed under MIT. Both licenses permit free commercial usage, modification, and redistribution in both personal and enterprise projects.
Do these libraries support TypeScript natively?
Yes, IonIcons includes excellent built-in TypeScript definitions. Similarly, Heroicons offers robust native TypeScript support for an improved developer experience.
OUR RECOMMENDATION
- Need a library with 1,300 icons and outline/filled/sharp style options
- Want tree-shakable imports to keep bundles small
- Require first-class TypeScript support in your codebase
- Are building with react, nextjs, vanilla
- Need a library with 324 icons and outline/solid/mini style options
- Want tree-shakable imports to keep bundles small
- Require first-class TypeScript support in your codebase
- Are building with react, vue, nextjs
- Need a Figma plugin for designer-developer handoff
Still unsure? Try our interactive quiz to get a personalized recommendation, or search 350,000+ icons from both libraries side by side. You can also check our live stats dashboard for real-time download and GitHub star trends.
NPM INSTALLATION COMMANDS
npm install react-ionicons
npm install @heroicons/react