Choosing the right icon library can make all the difference when designing a sleek, user-friendly interface. In our updated 2025 guide, we’ve rounded up ten of the best free icon sets—each one perfect for websites, web apps and responsive dashboards.

Every library we feature is free for commercial use, simple to install via CDN or NPM, and available in SVG, webfont (or PNG) formats. Plus, they’re all actively maintained or widely adopted, so you can be confident they’ll stay up-to-date as your projects evolve.

Font Awesome remains a firm favourite, offering over 2,000 free icons alongside a vast Pro collection. It loads effortlessly through CDN or NPM, and includes regular, solid and brand variants—ideal if you need a little extra variety. If you prefer something lighter, Feather Icons delivers minimalist 1px-stroke SVGs that perform brilliantly on modern, mobile-focused UIs. And for aficionados of Tailwind CSS, Heroicons provides both outline and solid SVG sets crafted to complement your utility-first designs.

For those who need sheer volume, Tabler Icons boasts more than 4,000 meticulously aligned SVGs, while Remix Icon serves up 2,200+ vector graphics tailored for React or Vue projects. Boxicons offers an approachable mix of outline, solid and logo styles, and Bootstrap Icons integrates seamlessly with the Bootstrap framework. Google’s Material Symbols has evolved into a variable-font powerhouse, giving you control over weight and fill for hundreds of icons.

Finally, if you’re after a community-driven fork or a specialised niche collection, consider Lucide Icons (a Feather fork with extra bindings) or Iconoir, which covers everything from finance to multimedia in a clean, consistent style.

No matter your stack or aesthetic, one of these libraries will effortlessly enhance your design workflow—so pick your favourite and get building!

Let's delve even further! 

• Font Awesome
  One of the most recognisable icon libraries, offering over 2 000 free icons (and 10 000+ in Pro) across regular, solid and brand styles. Easily loaded via CDN, NPM or locally, it’s highly customisable with CSS and ideal for projects requiring a broad selection.

• Feather Icons
  A minimalist collection of open-source, 1 px-stroke SVG icons designed for clarity and performance. Feather is lightweight, scalable without loss of quality and perfect for modern, mobile-first interfaces.

• Heroicons
  Crafted by the team behind Tailwind CSS, Heroicons provides both outline and solid SVG variants in a clean, contemporary style. They integrate seamlessly with utility-first workflows and are simple to tweak in any SVG editor.

• Tabler Icons
  Boasting over 4 000 meticulously aligned SVG icons, Tabler focuses on grid consistency and detail. Stroke widths are customisable, making it suitable for both user-interfaces and documentation.

• Remix Icon
  A versatile set of 2 200+ icons tailored for React, Vue and mobile-first applications. Remix Icon pairs solid and outline styles, is 100% open-source, and offers both SVG and webfont formats.

• Boxicons
  An ever-growing library of UI and social media icons with outline, solid and logo variants. Developer-friendly and community-driven, Boxicons supports both SVG and lightweight webfont usage.

• Bootstrap Icons
  The official icon set for Bootstrap 4 and 5, featuring around 2 000 SVG and webfont icons. Seamlessly integrates with Bootstrap projects and is actively maintained for consistency and accessibility.

• Material Symbols (Google)
  Google’s evolved icon system offering 3 000+ variable-font icons with control over weight, grade and fill. Designed for accessibility and consistency across Android, web and other platforms.

• Lucide Icons
  An actively maintained fork of Feather Icons that expands the range with extra glyphs and robust framework bindings (React, Vue, etc.). Retains the same minimalist clarity while keeping the library up to date.

• Iconoir
  A broad, minimalist icon set covering interface, UX and multimedia needs. With 1 300+ SVGs plus React and Figma support, Iconoir delivers a consistent aesthetic for specialised domains like finance and analytics.

Selecting the right icon library is crucial for delivering a polished, intuitive user experience without compromising performance or maintainability. Whether you need the extensive variety of Font Awesome, the sleek minimalism of Feather Icons, or the framework-friendly designs of Heroicons and Bootstrap Icons, there’s a free, well-supported set to suit every project. Libraries like Tabler and Iconoir shine when you require consistency and meticulous alignment, while Remix and Lucide offer seamless integration with modern JavaScript frameworks. Google’s Material Symbols stand out for their variable-font flexibility, empowering you to fine-tune weight and style on the fly.

Before committing, consider your design system’s aesthetic, performance budget and development workflow. Experiment with a couple of sets in a staging environment to gauge load times, customisability and overall fit. Most importantly, leverage the active communities and ongoing maintenance each library provides—this ensures you stay ahead of accessibility requirements and emerging platform standards.

Whichever icon collection you choose, these ten free libraries will equip you with the visual building blocks to craft engaging, user-friendly interfaces in 2025 and beyond.