Best Free Icon Libraries for UI/UX Designers

Sets and libraries of icons for any occasion

Last updated: October 2025

Lucide, Heroicons, Phosphor Icons, and Tabler Icons are the most widely used free icon libraries for web designers, offering clean SVG icons with permissive MIT licenses. Icon libraries save designers hours of work and keep interfaces consistent — below you'll find the most useful sets, from massive collections like Hugeicons with 40,000 icons to focused libraries like Feather Icons that pair beautifully with modern UI frameworks.

IconsFree

CSS.gg

Explore a collection of over 700 open-source CSS-only icons at CSS.gg. Easily integrate these customizable icons into your web projects.

IconsFree

Eva Icons

Access a pack of beautifully crafted icons at Eva Icons. Use these scalable icons to enhance the visual appeal of your designs

IconsFree

Feather Icons

Discover simply beautiful open-source icons at Feather Icons. Choose from a wide range of minimalist icons for your web projects.

IconsFree + Paid

Flaticon

Discover a vast collection of free vector icons for your projects at Flaticon. Choose from thousands of icons in various formats and styles

IconsFree

Glyphs.fyi

Discover and explore various icon sets at Glyphs.fyi. Browse through a wide range of icons and find the perfect ones for your projects.

IconsFree

Heroicons

Heroicons offers a collection of beautifully crafted SVG icons. Enhance the visual appeal of your websites and applications with these stylish icons

Icons

Hugeicons

An icon library with over 40,000 icons in 9 different stylescreated to make your web and mobile projects look more polished and user-friendly.

IconsFree + Paid

IconFinder

Iconfinder is the world's largest marketplace for icons, illustrations and 3D illustrations in SVG, AI, and PNG format.

IconsFree

Iconic.app

Iconic.app allows you to create and customize icons according to your preferences. Design unique icons and export them for use in your projects.

IconsFree

Iconoir

Iconoir provides a collection of open-source vector icons tailored for designers. Find and incorporate high-quality icons into your design projects.

IconsFree

Icons.download

Icons.download provides a wide range of free icons for your projects. Discover and download icons in various formats and styles to suit your needs.

IconsFree

Lucide.dev

Lucide.dev offers an open-source icon set specifically designed for developers. Access a collection of simple and intuitive icons to enhance your projects.

IconsFree

Material Symbols

Material Symbols are our newest icons consolidating over 2,891 glyphs in a single font file with a wide range of design variants.

IconsFree + Paid

Noun Project

Find icons for everything at Noun Project. Explore a diverse library of icons created by a global community of designers.

IconsFree

Phosphor Icons

Discover an open-source icon set for design and development at Phosphor Icons. Choose from a comprehensive library of icons for your projects.

IconsFree

Remix Icon

Remix Icon is an open-source icon library with a vast selection of icons for your projects. Customize and integrate these icons easily into your designs.

IconsFree

Tabler Icons

Tabler Icons offers a premium and free icon set for various purposes. Explore a diverse collection of icons to enrich your designs and applications.

Frequently Asked Questions

What is the best free icon library for web design?

The most popular free icon libraries for web design are Lucide, Heroicons, Phosphor Icons, and Tabler Icons. Each offers SVG icons in multiple styles with clean, modern aesthetics that work well in product UI.

What icon format is best for web projects?

SVG is the best format for web icons. SVGs are resolution-independent, accessible, easily styled with CSS, and have small file sizes. Avoid PNG icon sets for UI work.

Are free icon libraries safe to use commercially?

Most popular icon libraries like Lucide, Heroicons, Feather Icons, and Tabler Icons use the MIT license, which allows free commercial use. Always check the license for each library before using it in client projects.

How many icons do I actually need in a UI project?

Most product interfaces use 30–80 unique icons across navigation, actions, and status states. Start with a library that covers common UI patterns, then add custom icons only where brand differentiation matters.

Can I mix icons from different libraries?

You can, but stick to one library per project when possible. Mixing stroke weights, corner radii, and grid sizes makes interfaces feel inconsistent. If you must mix, normalize size and stroke in your design system first.

Reviewed by Sergei Chyrkov · Last updated October 2025 · How we curate

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