Octicons vs Untitled UI Icons (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 Octicons against Untitled UI Icons 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. Octicons boasts an impressive 280 icons (licensed under MIT), while Untitled UI Icons counters with 1,179 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 Octicons and Untitled UI Icons, 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.
DESIGN AESTHETICS & VISUAL STYLE
Beyond the code, the visual identity of your application is heavily influenced by your choice of iconography. Octicons primarily features a outline aesthetic, whereas Untitled UI Icons leans toward a outline look.
Octicons is designed with strict geometric rules and a consistent grid, ensuring that all 280 icons share the same visual weight. This makes it particularly well-suited for professional dashboards, enterprise SaaS products, and minimal user interfaces.
On the other hand, Untitled UI Icons offers a more distinct personality. With its 1,179 carefully crafted icons, it can bring warmth and character to consumer-facing mobile apps, marketing websites, and creative portfolios.
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 Octicons and the MIT license used by Untitled UI Icons will ensure your project remains risk-free.
Octicons 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.
Untitled UI Icons 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 Octicons and Untitled UI Icons.
- Octicons Performance: Because Octicons 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.
- Untitled UI Icons Performance: Similarly, Untitled UI Icons 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 { RepoIcon } from '@primer/octicons-react'
export default function App() {
return <RepoIcon size={16} />
}import { Home01 } from '@untitledui/icons'
export default function App() {
return <Home01 size={24} color='currentColor' />
}FINAL VERDICT: WHICH SHOULD YOU CHOOSE?
Still undecided? Here is our definitive breakdown of when to use Octicons versus when to opt for Untitled UI Icons.
FREQUENTLY ASKED QUESTIONS
Which is better: Octicons or Untitled UI Icons?
Choosing between Octicons and Untitled UI Icons depends entirely on your project's technical requirements and design aesthetic. Octicons provides 280 icons and is notable for designed on strict 16px and 24px grid systems to prevent rendering blurriness, while Untitled UI Icons offers 1,179 icons and is best known for polished saas/product ui style.
Are Octicons and Untitled UI Icons completely free to use?
Yes. Both libraries are highly permissive open-source projects. Octicons is licensed under MIT, and Untitled UI Icons 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, Octicons includes excellent built-in TypeScript definitions. Similarly, Untitled UI Icons offers robust native TypeScript support for an improved developer experience.
OUR RECOMMENDATION
- Need a library with 280 icons and outline style options
- Want tree-shakable imports to keep bundles small
- Require first-class TypeScript support in your codebase
- Are building with react, vue, nextjs, jekyll
- Need a library with 1,179 icons and outline style options
- Want tree-shakable imports to keep bundles small
- Require first-class TypeScript support in your codebase
- Are building with react, nextjs
Still unsure? Try our interactive quiz to get a personalized recommendation, or search 355,702 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 @primer/octicons-react
npm install @untitledui/icons