Short answer: Yes, for the big open-source sets. Lucide (ISC), Tabler, Phosphor, Fluent, Heroicons, Bootstrap Icons and Iconoir (MIT) and Material Symbols (Apache 2.0) all allow commercial use, changes and redistribution without paying or asking. What they ask in return is that the licence and copyright notice travel with the copies you distribute, usually as a file in your project or a line in your third-party notices. A visible credit on the page is not required. Company logos are the exception: the licence covers the drawing, not the trademark.
"Free icons" can mean three very different things: open-source sets you can use for almost anything, "free with attribution" sites that require a visible link, and "free for personal use" packs that rule out commercial work. The eight sets below are all the first kind.
Which licence does each icon set use?
The sets in Icon Studio, with the versions it ships:
| Set | Version | Licence | Icons (styles) |
|---|---|---|---|
| Lucide | 1.49.0 | ISC | 2,121 (outline) |
| Tabler | 3.48.0 | MIT | 4,790 outline, 1,019 filled |
| Phosphor | 2.1.1 | MIT | 1,434 in each of 6 weights |
| Fluent | 1.1.343 | MIT | 2,474 regular, 2,510 filled |
| Heroicons | 2.2.0 | MIT | 324 outline, 324 solid |
| Bootstrap Icons | 1.13.1 | MIT | 1,341 regular, 668 filled |
| Iconoir | 7.12.1 | MIT | 1,313 regular, 272 solid |
| Material Symbols | 0.47.5 | Apache 2.0 | 3,926 in each of 6 styles |
What do MIT and ISC allow and ask?
Both are short, and both allow almost everything. MIT grants the right "to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies", with one condition: "The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software." ISC, Lucide's licence, says the same in fewer words: use is permitted "for any purpose with or without fee", "provided that the above copyright notice and this permission notice appear in all copies."
One detail in Lucide's licence: some of its icons come from the older Feather set, and those carry Feather's MIT licence too. Lucide's licence file lists them and includes both texts, so keeping that one file covers both.
What does Apache 2.0 ask for Material Symbols?
A little more. Apache 2.0 also allows commercial use and changes, and when you distribute the icons it asks you to:
| Condition | In practice |
|---|---|
| Give recipients a copy of the licence | Ship the licence file with the icons |
| Mark files you changed | Note that you recoloured or resized them |
| Keep the copyright and attribution notices | Do not strip the notices from the source |
| Pass on a NOTICE file if there is one | The Material Symbols package has none |
Its trademark clause adds that the licence "does not grant permission to use the trade names, trademarks, service marks, or product names of the Licensor": you may use the icons, not Google's name as if it endorsed your product.
Where does the notice go in a website or an app?
Where the people who receive the files can find it:
| You ship | Put the notice |
|---|---|
| A website's code in a repository | A licenses/ folder or a THIRD-PARTY-NOTICES file in the repository |
| A mobile or desktop app | The app's open-source licences screen |
| A template, theme or icon pack you sell | A licences file inside the download |
| An icon in a slide deck or a printed flyer | No files are distributed; keeping the licence in your project files is good practice |
None of these licences asks for a visible "icons by" credit on your page. You can give one, and the makers appreciate it, but it is optional. This is how the licence texts read, not legal advice.
Can you use company logos from icon sets?
That is a different question. An open-source licence covers the drawing; the logo itself is a trademark that belongs to the company, and many companies' brand rules forbid recolouring or changing their logo, which is exactly what an icon editor does. Use a company's logo only as its own brand guidelines allow, usually the official file, unchanged, to refer to that company. Icon Studio leaves company logos out of all eight sets for this reason.
Where can you check this?
Can you get icons with their licences in one place?
Icon Studio searches all eight sets at once, over 49,000 icons, and shows each icon's set and licence. Its Icon licences button lists every set with its version and licence file, and a zip of icons you select puts each set's licence in it for you, so the notice travels with the files. It exports SVG, PNG, React, CSS or a Power BI measure. Lucide vs Tabler vs Phosphor vs Fluent helps you pick a set.
