Simple Icons

Simple Icons solves one narrow problem better than anything else in this directory: you need the mark of a service you integrate with, in a footer or on an integrations page, and you need it now, in a format that will not fight your layout. The set is over 3,400 brand marks as clean SVGs, each drawn on a 24 by 24 grid with a title element, so they drop into a page at any size and take color from CSS like text. Download one from simpleicons.org, or pull the whole set through the simple-icons npm package when a build needs them programmatically. The repository is actively maintained, with the README updated as recently as November 10, 2026, and the community keeps adding marks as services appear.

The license is where this entry earns its keep, because the easy summary is wrong. The project itself is CC0 1.0, recorded in LICENSE.md in the simple-icons/simple-icons repository, and an earlier version of our own icons guide summarised the set as CC0. The project's DISCLAIMER file is more careful, and it is the document that matters: Simple Icons is released under CC0, though that does not mean all icons within the project are also CC0, and users should check individual licenses where available. We counted the license data in the project's data file on October 28, 2026: 3,243 of 3,467 entries carry no license entry at all, which the project says tells you nothing either way; of the 224 that do, only 12 are CC0, while 49 are Apache 2.0, 44 are a version of CC BY-SA, and 29 are MIT, each with its own notice duty. Eleven icons carry a non-commercial Creative Commons license, and 23 point to a custom page of the owner's terms. A commercial project should read those before use.

The second layer is the brand itself. Simple Icons is an index of marks, not a license to them: 839 entries link to the brand's own guidelines, which govern size, color, and clear space, and the DISCLAIMER says the project cannot be held responsible for legal activity raised by a brand. For a footer link to a social profile or a works-with list on an integrations page, the brand's guidelines are the governing document where the brand publishes them. That is not a reason to avoid the set; it is the reason to use it the way it is built, as an index that points at the governing terms.

The honest limits follow from the same facts. Simple Icons is brand marks only, so it cannot replace an interface icon set for product UI; pair it with a set such as Bootstrap Icons or Lucide for glyphs. Coverage is uneven by nature: a new service may not have a mark yet, and a mark you need may be an older drawing that the brand has since replaced. And the per-icon license check is real work at scale: one mark in a footer is a minute's check, while a directory of a hundred integrations needs a process, not a glance.

Bottom line: choose Simple Icons when you need a brand mark quickly and want the license question answered per icon instead of assumed per set. Check the icon's license entry and the brand's guidelines, keep the mark at 24px or above, and let it do the one job it is built for. The comparison worth making before you commit is Bootstrap Icons: a MIT-licensed interface set for the glyphs Simple Icons deliberately does not ship.