Notdef
The notdef icon represents an undefined or unknown state, often used to symbolize errors, warnings, or alerts.
Add shadcn.io to your AI agent. · Pro It installs Notdef, or any of 294k icons, from a prompt, with Pro.
Set up MCPExports at 18 × 24 px
164 in Font Awesome 6 RegularCC BY 4.0 license (opens in a new tab)Free to copy and download
Code
Notdef in your framework
In any framework. Customize it above, and the code follows.
export const NotdefIcon = (props: React.SVGProps<SVGSVGElement>) => (
<svg xmlns="http://www.w3.org/2000/svg" width="18" height="24" viewBox="0 0 384 512" {...props}>
<path fill="currentColor" d="M336 0H48C21.49 0 0 21.49 0 48v416c0 26.5 21.49 48 48 48h288c26.51 0 48-21.49 48-48V48c0-26.51-21.5-48-48-48zm0 90.16V421.8L221.2 256L336 90.16zM192 213.8L77.19 48h229.6L192 213.8zM162.8 256L48 421.8V90.16L162.8 256zm29.2 42.2L306.8 464H77.19L192 298.2z"/>
</svg>
);Other libraries
Notdef in 2 more libraries
Each library draws it its own way. Open one to compare.
Font Awesome 6 Regular
More like it
Icons that share its tags, then the ones next to it in Font Awesome 6 Regular, in the same style.
Search Font Awesome 6 Regular
Skip the copy and paste. With Pro, your AI agent finds and installs any Font Awesome 6 Regular icon from a prompt.
Get ProTags
Browse by tag
Notdef is tagged warning, alert and error. Related tags follow; each opens its icons from every library.
Pricing
Font Awesome 6 Regular MCP, with Pro
Ask for Notdef or any of 164 Font Awesome 6 Regular icons and your agent installs it. The MCP comes with every Pro plan, with 6,000+ blocks and 14 premium templates. The icons stay free.
4.9/5 out of 5 · 150+ reviewsfrom 150+ founders and developers.
Billing
Billed once a year in USD. Cancel anytime.
- How many people can use the license.
- Client work, SaaS products and anything you charge for.
- Production-ready React sections: hero, pricing, features, dashboards and more.
- Complete multi-page sites you can ship as they are.
- React icons from every major library, installable with one command.
- Presets that restyle every block, in light and dark.
- Lets your AI editor search, preview and install blocks for you.
- Priority requests are answered first.
Individual
For personal projects & open source
$32instead of $49/mo
$389 billed yearly
- Seats: 1 seat
- Commercial use: Personal & open source only
- Pro blocks: 6,000+ blocks
- Templates: All 14 templates
- React icons: 294k+ icons
- Themes: All 59 themes
- MCP server: Basic usage
- Support: Standard
Team
Most popularFor freelancers, agencies & startups
$66instead of $99/mo
$789 billed yearly · ≈ $13/dev/mo
- Seats: Up to 5 seats
- Commercial use: Included
- Pro blocks: 6,000+ blocks
- Templates: All 14 templates
- React icons: 294k+ icons
- Themes: All 59 themes
- MCP server: High usage
- Support: Priority
Organization
For companies with larger teams
$132instead of $199/mo
$1,589 billed yearly
- Seats: Unlimited seats
- Commercial use: Included
- Pro blocks: 6,000+ blocks
- Templates: All 14 templates
- React icons: 294k+ icons
- Themes: All 59 themes
- MCP server: Unlimited usage
- Support: Priority
Billed once a year in USD. Cancel anytime.
Individual
For personal projects & open source
$32instead of $49/mo
$389 billed yearly
- How many people can use the license.Seats: 1 seat
- Client work, SaaS products and anything you charge for.Commercial use: Personal & open source only
- Production-ready React sections: hero, pricing, features, dashboards and more.Pro blocks: 6,000+ blocks
- Complete multi-page sites you can ship as they are.Templates: All 14 templates
- React icons from every major library, installable with one command.React icons: 294k+ icons
- Presets that restyle every block, in light and dark.Themes: All 59 themes
- Lets your AI editor search, preview and install blocks for you.MCP server: Basic usage
- Priority requests are answered first.Support: Standard
Team
Most popularFor freelancers, agencies & startups
$66instead of $99/mo
$789 billed yearly · ≈ $13/dev/mo
Everything in Individual, plus
- How many people can use the license.Seats: Up to 5 seats
- Client work, SaaS products and anything you charge for.Commercial use: Included
- Lets your AI editor search, preview and install blocks for you.MCP server: High usage
- Priority requests are answered first.Support: Priority
Organization
For companies with larger teams
$132instead of $199/mo
$1,589 billed yearly
Everything in Team, plus
- How many people can use the license.Seats: Unlimited seats
- Lets your AI editor search, preview and install blocks for you.MCP server: Unlimited usage
- Secure checkout via Stripe
- Code lives in your repo
- Keep what you've shipped if you cancel
- License terms
FAQ
Frequently asked questions
What the Notdef icon means and where it's used, then how to install, style and license it.
Install Notdef from a prompt
MCP, 6,000+ blocks and 14 premium templates in every Pro plan. The icons stay free.