What it does
Nucleo combines premium icon families and free collections with web and desktop management apps. You can customize and export icons, while paid families are sold by family or bundle and number of seats.
Nucleo separates its visual families: UI serves compact interfaces, Sharp uses geometric 24-pixel artwork, and Pixel has a retro style. Free collections and selected premium-family subsets can be customized and exported before buying a full library.
In the web app, choose a set and filter by style or size. An icon’s controls cover size, padding, color, rotation and flipping, with stroke options for compatible families. Choose an export format such as SVG, PNG or TSX, then use Copy or Download. The Mac and Windows apps also organize imported collections and export formats such as icon fonts and SVG symbols.
Paid families use a one-time purchase with lifetime updates. Log into the apps with the account created during purchase to unlock them. Free collections have an installation route that does not require an account.
The current Standard License permits unlimited icons in unlimited personal and commercial projects. Publicly accessible source files, including templates and open-source projects, may contain up to 100 Nucleo icons. Clients receive the icons used in their delivered project for use within that project. An icon chooser that forms part of your product’s core functionality needs an Extended License.
Strengths
- Free collections support real customization and export workflows.
- Desktop apps can organize your own icon libraries alongside Nucleo assets.
Watch out for
- Public source distributions are capped at 100 icons under the Standard License.
- Embedding an icon-browsing feature requires an Extended License.
Best for
- Teams maintaining a licensed icon collection.
- Designers managing SVG assets across several projects.
Sources
- What Is Nucleo? A Complete SVG Icon System for Designers and Developers (Oct 27, 2026)
- Web App: Nucleo (Oct 27, 2026)
- Nucleo: Pricing (Oct 27, 2026)
- How do I unlock purchased Nucleo icons in the apps? (Oct 27, 2026)
- Nucleo for Mac/Windows (Oct 27, 2026)
- Nucleo: Standard License (Oct 27, 2026)