When it comes to choosing the best icon library for your next design or development project, FontAwesome often gets a lot of attention. However, in 2024, the market has evolved significantly, and several libraries have emerged as far superior options. These libraries offer more icons, better integration across various platforms, and enhanced customization options.

One standout is Lineicons V5, which recently released its fifth version. This latest update introduces over 30,000 icons, with more than 2,000 free icons across 60+ categories. Lineicons offers seamless integration with major design tools like Figma, as well as frameworks like React, Next.js Vue, and Svelte. With advanced features like a free CDN, icon editor, and more file formats (SVG, JSX, PNG, WEBP), it positions itself at the new forefront of modern icon libraries.

Let's explore some of the best icon libraries of 2025 for designers and developers, which not only offer extensive collections but also make integration and customization easier for both developers and designers. Many of these icon libraries are either free or open-source, making them accessible for developers and designers at any level.

Key Selection Criteria

When choosing the best icon libraries for 2025, we focused on five essential factors:

• Popularity & Usage: We selected libraries that are widely adopted and trusted by the developer and design communities.
• Customizability: Libraries that offer easy customization, such as adjustable stroke weight, color changes.
• Design Variations: We prioritized libraries that provide diverse styles (e.g., outlined, solid, duo-tone) to suit different project aesthetics and needs.
• Ease of Integration: Compatibility with popular frameworks like React, Vue, Svelte, and more.
• Format Availability: Icon libraries that support multiple formats such as SVG, JSX, PNG, and WebP were favored.
• Number of Free Icons: Availability of free icons within each library, as this accessibility allows developers and designers.

15+ Best Icon Libraries

Here’s a curated list of the top icon libraries that are making waves in 2025. Each one stands out for its unique features, extensive collection, and ease of integration, catering to a variety of design and development needs.

1. Lineicons

Lineicons V5 is a comprehensive icon library designed to cater to both developers and designers, offering more than 30,000 meticulously crafted icons, with over 2,000 free icons.

This latest version is a significant upgrade, introducing 10 unique icon styles, including outlined, rounded, duo-tone, and filled options. What sets Lineicons apart is its focus on pixel-perfect precision, ensuring that each icon maintains clarity and detail even at the smallest sizes.

Lineicons V5 has quickly risen to the top in 2025 due to its comprehensive updates and vast icon selection.

• Total Icons: 30,000+ (Free Icons: 2,000+)
• Integration & Formats: SVG, JSX, Vue, HTML, PNG, WEBP and more
• Features: Icon Editor, Figma Plugin, Pro CDN and more
• Categories: 60+
• Best For: Developers, Designers, UI/UX Teams
• Website: Lineicons

2. Heroicons

Heroicons, designed by the creators of Tailwind CSS, offers clean, minimalist icons that are perfect for any modern web application. These icons are crafted with simplicity and clarity in mind, making them ideal for user interfaces.

• Total Icons: 316+
• Integration & Formats: SVG, React, Vue
• Features: Free, open-source, optimized for web
• Categories: Outline icons
• Website: Heroicons

3. Lucide

Lucide is an open-source icon library that offers a beautiful and consistent collection of icons, curated by the community. It provides over 1,500 clean and scalable icons designed for a wide range of applications. Lucide's focus is on simplicity, readability, and customization, making it a versatile tool for designers and developers.

• Total Icons: 1,500+
• Integration & Formats: SVG, JSX, Vue, HTML, and more
• Features: Lightweight & Scalable, Customizable, Tree Shakable, Package Support, Active Community
• Categories: Various design-focused icon categories
• Best For: Developers, Designers, UI/UX Teams
• Website: Lucide Icons

4. Uicons

Uicons brings a wide range of icons, both free and premium, that cater to diverse project needs. Whether you need simple UI icons or more elaborate illustrations, Uicons has something for every project.

• Total Icons: 6,640+
• Integration & Formats: SVG, PNG, IconFont
• Features: Multi-format, affordable, customizable
• Categories: 50+ (business, tech, UI)
• Website: Uicons

5. Iconify

Iconify is a universal icon framework, allowing you to tap into hundreds of icon sets in one place. It enables you to use icons from over 100 libraries without the need for multiple dependencies.

• Total Icons: 200,000+ (across multiple libraries)
• Integration & Formats: React, Vue, Svelte, HTML
• Features: Supports multiple icon sets, customizable
• Categories: 100+
• Website: Iconify

6. Streamline Icons

Streamline Icons is one of the most comprehensive icon libraries out there, designed with attention to detail and customization in mind. With over 350,000+ icons, Streamline ensures that you'll find the perfect icon for any scenario.

• Total Icons: 350,000+
• Integration & Formats: SVG, Figma, Sketch, PNG
• Features: Detailed, customizable, multi-platform
• Categories: 100+ (business, tech, UI)
• Website: Streamline Icons

7. React Icons

React Icons is the go-to library for React developers, offering access to popular icon sets like FontAwesome, Material Icons, and more, all in one library.

• Total Icons: 10,000+
• Integration & Formats: JSX, React
• Features: Modular import, lightweight
• Categories: Multiple styles (solid, outlined)
• Website: React Icons

8. Nucleo

Nucleo is designed for professional use, offering a wide range of vector icons that can be customized and used across multiple platforms, making it perfect for design agencies and developers alike.

• Total Icons: 30,000+
• Integration & Formats: SVG, PNG, IconFont, Figma, Sketch
• Features: Customizable, professional-grade
• Categories: 60+
• Website: Nucleo

9. Ionicons

Ionicons delivers a lightweight and highly customizable icon set designed for modern applications. With a mix of free and premium icons, Iconic is a solid option for web developers and designers.

• Total Icons: 400+
• Integration & Formats: SVG, Webfont
• Features: Lightweight, scalable
• Categories: General-purpose
• Website: Iconic

10. Bootstrap Icons

Bootstrap Icons is the official icon library from the creators of Bootstrap, offering a large variety of icons optimized for Bootstrap-based projects.

• Total Icons: 1,800+
• Integration & Formats: SVG, Webfont, React
• Features: Free, built for Bootstrap
• Categories: UI elements, alerts, forms
• Website: Bootstrap Icons

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11. Feather Icons

Feather Icons is a minimalist, open-source library that provides simple, consistent, and lightweight icons, ideal for modern web interfaces.

• Total Icons: 300+
• Integration & Formats: SVG, JSX
• Features: Lightweight, customizable
• Categories: General-purpose
• Website: Feather Icons

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12. Material UI Icons

Material UI Icons, part of Google's Material Design guidelines, is a comprehensive set of icons built for intuitive user interfaces.

• Total Icons: 2,000+
• Integration & Formats: SVG, React
• Features: Follows Material Design standards
• Categories: UI elements, media, communication
• Website: Material UI Icons

13. Iconsax

Iconsax is the official icon set of the Vuesax framework, featuring over 6,000 icons in six unique styles, such as linear, Bold, and Two-Tone. Designed with a 24-px grid for perfect balance, Iconsax is free for personal and commercial use with certain restrictions. It is ideal for developers and designers looking for versatile and modern icons.

• Total Icons: 6,000+
• Integration & Formats: SVG, Figma, Sketch, XD and more
• Features: 6 distinct styles (Linear, Bold, Two Tone, Bulk, Outline, Broken), grid-based design (24px)
• Categories: UI elements, media, communication
• License: Free for personal and commercial use (with restrictions)
• Website: Iconsax

14. Boxicons

Boxicons is a simple, free icon library offering over 1,500 clean, modern icons. It provides a wide range of styles, including regular, solid, and logo icons, making it a great choice for web developers looking for a lightweight and customizable icon set.

• Total Icons: 1,500+
• Integration & Formats: SVG, HTML, React, Vue
• Features: Free CDN, Icon Customization, MIT License
• Categories: 20+
• Website: Boxicons

15. Tabler Icons

Tabler Icons is an open-source library known for its minimalist and crisp design. Offering over 2,000 icons with customizable stroke widths, it’s perfect for UI projects that require a clean, unobtrusive aesthetic. Tabler Icons is particularly popular in the React ecosystem, with JSX compatibility, and its flexible SVG format ensures easy use across platforms.

• Total Icons: 4926
• Integration & Formats: SVG, JSX, HTML
• Features: Customizable Stroke, Open Source, Simple Design
• Categories: 30+
• Website: Tabler Icons

16. IconMonstr

IconMonstr offers a large collection of over 4,500 monochromatic icons that are free to use without attribution, making it a great resource for developers looking for an easy-to-access icon set.

• Total Icons: 4,700+
• Integration & Formats: SVG, PNG, Icon Fonts
• Features: Free to Use, No Attribution, Icon Variations
• Categories: 50+
• Website: IconMonstr

17. Orion Icons

Orion Icons boasts an impressive collection of over 6,000 icons, offering both free and premium options. It stands out with its interactive icon editor, allowing users to easily customize icons before downloading.

• Total Icons: 6,000+
• Integration & Formats: SVG, PNG, JSON
• Features: Free and Premium, Icon Editor, Customizable
• Categories: 30+
• Website: Orion Icons

18. Iconoir

Iconoir is an open-source icon library offering over 1,400 versatile icons designed with a focus on simplicity and customization. With support for light and dark modes, it’s a perfect fit for modern UI/UX designs.

• Total Icons: 1,597
• Integration & Formats: SVG, JSX, Figma
• Features: Free and Open Source, Customizable, Light and Dark Modes
• Categories: 15+
• Website: Iconoir

Conclusion

2025 is an exciting year for icon libraries, with numerous options that fulfill every design and development need. 
In this article, we explored the range of best icon library of 2025, from versatile giants like Lineicons (V5) to the simplicity of Heroicons or the detailed customizability of Streamline Icons, and there's something for everyone.

Choosing the right icon library can significantly improve your workflow, boost productivity, and elevate the aesthetic of your projects.

Be sure to explore the featured libraries and discover how they can enhance your next project!