Best Free SVG Icons for Developers

The hard part of using free SVG icons is not finding them — it is finding sets with a permissive license, consistent geometry, and clean source you can drop into a real codebase. This guide compares five free icon sets worth shipping, notes the license and trade-off for each, and shows how to adapt any of them to your UI in IconVectors.

Every set below is open-source and free for commercial use, but they differ on license, size, style, and how well they slot into a component framework. Pick by what your project actually needs, not by raw icon count.

Five free SVG icon sets worth using

1. Heroicons

Heroicons is MIT-licensed and ships 316 icons in three variants — 24×24 outline, 24×24 solid, and 20×20 mini — from the team behind Tailwind CSS. The variants and sizing are designed for product UI, so it pairs tightly with a Tailwind/React stack and gives you a matched outline/solid pair for active states out of the box.

Trade-off: the set is small and deliberately product-UI focused, so you will hit gaps if you need broad domain coverage (transport, media, science, and so on).

2. Feather Icons

Feather is MIT-licensed and offers around 287 minimalist icons drawn on a 24×24 grid with a uniform 2px stroke. That single, strict drawing rule makes Feather one of the most visually consistent sets available, which is why it gets reused so widely.

Trade-off: it is outline-only and now dormant — development has stalled and the project was forked into Lucide — so for newer glyphs or a filled variant you will look elsewhere.

3. Tabler Icons

Tabler Icons is MIT-licensed and by far the largest set here, with 6,146 icons in both outline and filled styles on a consistent 24×24 grid with a 2px stroke. When you want one single family to cover almost every category in an app without mixing sources, Tabler is the strongest candidate.

Trade-off: the size cuts both ways — browsing and choosing a consistent subset takes more effort, so lean on search and tags rather than scrolling.

4. Lucide

Lucide is an ISC-licensed, community-maintained fork of Feather that has grown to over 1,600 icons while keeping Feather's clean outline geometry. Its standout feature for developers is first-class, tree-shakable packages for React, Vue, Svelte, and Angular, so you import only the icons you actually render.

Trade-off: it inherits Feather's outline-only aesthetic, so if your design calls for solid or filled icons you will need to mix in another set or draw them.

5. svgicons.com

svgicons.com is Axialis's own free SVG icon search site — not a single icon set but a search engine that aggregates and indexes 227 open-source icon sets in one searchable place. With 320,000+ icons indexed, it is the fastest way to find a permissively-licensed glyph when none of the single sets above has the one you need. The icons themselves are authored by their respective open-source projects; svgicons.com makes them searchable.

Its practical advantage for IconVectors users is integration: svgicons.com is wired in as a built-in import source, so you can search it and pull an icon straight onto the canvas without leaving the editor. Each icon keeps its own upstream license — check the source set's terms before you ship.

Customize a free icon to match your UI

Even a well-made free icon rarely drops into a product unchanged. The common adjustments are:

• Change stroke width so the icon matches the visual weight of your UI.
• Adjust shapes to improve optical balance or simplify detail at small sizes.
• Align the style so icons pulled from different sets read as one consistent family.

IconVectors handles all three visually and exports clean SVG, which matters most when you combine more than one of the sets above and need them to feel like a single system.

Workflow example

1. Get an SVG icon
   Download one from any set above, or use svgicons.com directly from the built-in import source in IconVectors.
2. Open it in IconVectors
   Use File -> Open... (Ctrl+O) to open the SVG as an editable document.
3. Modify the style
   Use the Selection Tool (V) to move shapes, the Control Bar to adjust stroke width and colors, and Path -> Convert to Path (Ctrl+B) plus the Path Edition Tool when you need direct node editing.
4. Export for your project
   Inspect the result in View -> Source Code (F3), then generate a delivery-ready file with File -> Export -> Export Minified (Shift+Ctrl+M).

The same steps work whether you started from one free set or stitched icons together from several.