Lock Alert

The lock-alert icon represents a secure or locked state with an alert or warning, often used to indicate a security issue or a warning related to protection. It is commonly used in software applications to indicate that data is encrypted or that a feature is secure, but with a warning. The lock-alert icon is part of the Material Design Icons library, which provides a wide range of icons for various applications.

In real-world applications, the lock-alert icon appears in web browsers like Google Chrome, Mozilla Firefox, and Microsoft Edge, where it is used to indicate that a website has a security issue. It is also used in password managers like LastPass and 1Password to indicate that a password is weak or has been compromised.

From a UX perspective, the lock-alert icon communicates the idea of a security issue or a warning related to protection, helping users understand that they need to take action to secure their data. It is often used in conjunction with other security-related icons to provide a clear and intuitive interface.

Lock Alert is one of 7,638 icons in Material Design Icons, made by Pictogrammers and released under Apache 2.0. It is drawn on a 24 × 24 grid.

Sign in (it's free), then open Get icon, Install with shadcn CLI, and pick your package manager to copy the command. It adds LockAlertIcon to components/icons/mdi-lock-alert.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 LockAlertIcon 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.

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 Lock Alert icon, or any of 7,638 Material Design Icons 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.

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="Lock Alert", so screen readers say what it does.

Yes. LockAlertIcon passes every SVG prop to the svg element, so <LockAlertIcon 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. Apache 2.0 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: Apache 2.0 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 Material Design Icons, Pictogrammers and the license.

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

Its tags are security, warning, safety, protection, authentication and login. Each tag page lists the icons that carry it from every library, which is the quickest way to find a match for Lock Alert in another set.

Material Design Icons draws many icons in several styles: Outline next to the default. Open the library and pick a style above the grid to see Lock Alert's siblings in it.