CSS Triangle Generator

Q: How do CSS triangles work?

CSS triangles are a hack using the `border` property on an element with zero width and height. By making some borders transparent and giving one a solid color, the solid border's diagonal edge forms a triangle shape.

Q: Why would I use a CSS triangle instead of an image?

Using a CSS triangle is more efficient. It requires no extra HTTP request, making your page load faster. It's also scalable, always looks sharp, and can be easily restyled with simple CSS changes.

Q: What's the difference between Isosceles, Equilateral, and Scalene triangles?

An Isosceles triangle has at least two equal sides. An Equilateral triangle has all three sides equal. A Scalene triangle has three unequal sides. Our tool lets you choose the type to fit your design needs.

Q: Are CSS triangles supported by all browsers?

Yes, the CSS border technique for creating triangles is supported by all web browsers, including very old ones, making it a very reliable method.

Tools

CSS Triangle Generator

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Direction

Type

Isosceles Equilateral Scalene

Dimensions & Color

Size

Color

Generated CSS Copy CSS

About the CSS Triangle Generator

We built this tool for a simple reason: creating triangles in CSS is a clever trick, but it's not always intuitive. Instead of remembering which border to color and which to make transparent, you can use our visual generator to get it right every time. This tool lets you create any kind of CSS triangle you need, from simple arrows for tooltips to custom shapes for your designs.

Our goal was to make the most flexible triangle generator available. You can choose from 8 different directions, select a triangle type (like isosceles or equilateral), and adjust the size and color in real-time. The tool instantly generates the clean CSS code for you to copy and paste.

How to Use the Tool

Use the 8-way directional pad to choose the direction your triangle should point.
Select a "Type": Isosceles (two equal sides), Equilateral (all sides equal), or Scalene (custom width and height).
Adjust the sliders to control the size, width, and height of the triangle.
Pick a color using the color picker.
The preview will update instantly, and you can copy the generated CSS code from the output box.

Frequently Asked Questions

How do CSS triangles work?

CSS triangles are a hack that cleverly uses the `border` property. An element with zero width and height (`width: 0; height: 0;`) can have its borders manipulated. Because the corners of borders meet at a diagonal, if you give three borders a transparent color and one a solid color, the solid border will form a triangle shape. This tool automates that entire process for you.

Why would I use a CSS triangle instead of an image?

Using a CSS triangle is much more efficient than using an image file. It requires no HTTP request, meaning your page loads faster. It's also scalable and will always look crisp and sharp, no matter how much you zoom in. Plus, you can change its color and size with a simple CSS edit, making it incredibly flexible for responsive design.

What's the difference between Isosceles, Equilateral, and Scalene triangles?

These terms describe the triangle's geometry. An isosceles triangle has at least two sides of equal length. An equilateral triangle has all three sides of equal length. A scalene triangle has three unequal sides. Our tool lets you choose the type to fit your exact design needs, from a perfect arrow to a uniquely shaped pointer.

Are CSS triangles supported by all browsers?

Yes, the CSS border trick used to create these triangles is supported by all web browsers, even very old ones like Internet Explorer 6. It's a very reliable and safe technique to use in any web project.