Signal

The signal icon represents network connectivity and signal strength in telecommunications and wireless applications. Featuring graduated vertical bars of increasing height, this universally recognized symbol indicates wireless signal strength, network connectivity quality, and the connection status that users rely on to understand their device's communication capabilities with networks and services.

In mobile operating systems like iOS and Android, this icon appears in status bars showing cellular signal strength and WiFi connectivity. Network monitoring applications display it for connection quality assessment, while IoT device interfaces use it to indicate wireless connectivity status and communication link quality with cloud services and control systems.

The graduated bar pattern communicates more than simple connection - it specifically represents signal strength gradients, connectivity quality levels, and the real-time network performance that affects data speeds and communication reliability. This visual language has become the universal shorthand for wireless connectivity across all digital devices.

Signal is one of 1,655 icons in Lucide, made by Lucide Contributors and released under ISC. It is drawn on a 24 × 24 grid with a 2 stroke.

Sign in (it's free), then open Get icon, Install with shadcn CLI, and pick your package manager to copy the command. It adds SignalIcon to components/icons/lucide-signal.tsx: one file, a size prop (24 by default) and every SVG prop, with no icon package.

Copy it as React (from Get icon, or the Code section): a typed SignalIcon component you paste into your project, with no package to install. Only the icons you import reach your bundle. It works in Next.js and any React app.

Yes, if your project has lucide-react: Signal is `SignalIcon` there, used as <SignalIcon />. The shadcn.io MCP server answers with that import when it finds the package. Without it, copy the icon from here.

Open Get icon, then Copy as code, and pick Vue, Svelte, Angular, Solid or Preact; the Code section shows each one too. Every version is one self-contained component with the SVG inside, and SVG and data URL copies are there for plain HTML and CSS.

With Pro, the shadcn.io MCP server lets Claude Code, Cursor or any MCP client find the Signal icon, or any of 1,655 Lucide icons, and install it from a prompt.

It's drawn in currentColor, so it takes the text color wherever you use it: a class like text-primary recolors it. To bake a color in, set one in Customize before you copy.

Set width and height on the component, or a class like size-6. It's drawn on a 24 × 24 grid, so it stays sharp at any size. Customize also sets the size it exports at, its padding and rotation, and its stroke.

Signal is a line icon drawn with a stroke width of 2. Change it in Customize before you copy, or pass strokeWidth to the installed component when all of its strokes share one width.

Yes. It follows the text color, so with text-foreground (or any theme token) it changes with your light and dark themes. The icon is a vector, so it needs no separate dark asset.

Next to a visible label it's decoration: add aria-hidden="true" so screen readers skip it. Standing alone, as in an icon button, give the button a name instead, like aria-label="Signal", so screen readers say what it does.

Yes. SignalIcon passes every SVG prop to the svg element, so <SignalIcon aria-hidden="true" /> works, and so do role="img" with aria-label, or a title child, when it carries meaning on its own.

Yes. Open Get icon, then Download file: SVG for code or design tools like Figma; PNG, WebP or JPEG at 512px; or an ICO favicon with 16, 32 and 48px inside. Each one uses what you set in Customize.

Yes. ISC allows commercial use; keep the license notice when you ship the icons' source files. The full terms are in the license, linked on this page.

No visible credit is required: ISC only asks that you keep the license notice if you ship the icons' source files. Icons installed with the shadcn CLI already start with a comment naming Lucide, Lucide Contributors and the license.

Yes. Copying and downloading it is free, and the shadcn CLI install only needs a free account.

8 other libraries draw an icon called Signal. The Other libraries section on this page shows each one, so you can compare them and open the one that fits your style.

Its tags are network, connection, signal, wireless, connectivity and Wi-Fi. Each tag page lists the icons that carry it from every library, which is the quickest way to find a match for Signal in another set.