Text Underline Icon

Q: When should I use it instead of a similar icon?

Use it for the underline button in a document editor's format bar, after bold and italic; and suggested insertions in a tracked changes view, marked apart from struck out words. For stressing a word in web body copy, where an underscored word reads as a hyperlink, use the Text Italic icon. For turning selected words into a clickable URL to another page, use the Link icon.

Letter U above a short bar in a rounded square, for underline formatting, emphasis and text toolbars. Available in 4 styles (outline, solid, duotone and filled) as a React component you install with the shadcn CLI.

Preview

Text Underline icon in outline, solid, duotone and filled styles

16px
20px
24px
32px

Install and code

pnpm dlx shadcn@latest add @reui/icons/default/filled/text-underline

Writes reui/icons/default/filled/text-underline.tsx

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Text Underline icon in shadcn/ui components

Button

Icon button

Button group

Dropdown menu

Input group

Text Underline icon FAQ

What does this icon show?

Letter U above a short bar in a rounded square, for underline formatting, emphasis and text toolbars. Typical uses: underline button in text editor, format text for emphasis and underline toolbar action.

When should I use it instead of a similar icon?

Use it for:

The underline button in a document editor's format bar, after bold and italic
Suggested insertions in a tracked changes view, marked apart from struck out words

For stressing a word in web body copy, where an underscored word reads as a hyperlink, use the Text Italic icon. For turning selected words into a clickable URL to another page, use the Link icon.

Which styles does it come in?

4 styles: Outline, Solid, Duotone and Filled. Every style is drawn on the same 24 by 24 grid and installs as its own file, so you can switch styles without touching the layout.

How do I install it with the shadcn CLI?

Copy the install command from the panel above, in the style you want, and run it in your project. The shadcn CLI adds the icon as a React component that you import and render like any other. It draws in the current text color, so your text color and size classes style it. Icon installs need a ReUI Ultimate license.

What icons go well with it?

Text Bold and Text Strikethrough sit beside it in the same toolbar or menu. More from the same family and the Text set: Text, Text Circle, Text Italic and Text Number.

When was it added?

It joined the ReUI icon library on June 30, 2026.

For AI Agents

Hand your agent this brief or the ReUI MCP, not a screenshot. Installs with a ReUI Ultimate license.

When to use

The underline button in a document editor's format bar, after bold and italic
Suggested insertions in a tracked changes view, marked apart from struck out words

When not to use

Stressing a word in web body copy, where an underscored word reads as a hyperlink: use the Text Italic icon
Turning selected words into a clickable URL to another page: use the Link icon

Agent notes

Name an icon-only button with its label, "Underline", as the aria-label

Markdownhttps://reui.io/icons/preview/text-underline.md

MCPget_icon("text-underline")

Installnpx shadcn@latest add @reui/icons/default/duotone/text-underline

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