CSS Triangle Generator
Generate up, down, left or right CSS border triangles with adjustable dimensions, color and live preview.
Set your values
Adjust the values, then calculate your result.
How to use CSS Triangle Generator
- Load the example or enter your own values.
- Choose the relevant options and run the tool.
- Review the result, then copy it or download a local file.
When this tool is useful
Create a simple decorative pointer for a tooltip, speech bubble or dropdown. The technique uses a zero-size element with transparent borders on two sides and a colored border on another. Choose the direction, visible width and height, then inspect the preview before copying the generated declarations into a class or pseudo-element.
Reading the result and limitations
The visible triangle uses border geometry rather than an image file, so width and height declarations on the element itself remain zero. Surrounding layout still needs to account for the border box. A border triangle cannot contain readable text and should be treated as decoration rather than an interactive control on its own. Dimensions are limited to three hundred pixels per axis for the preview, and the color input accepts a six-digit hexadecimal value.
What are the main limits of CSS Triangle Generator?
The visible triangle uses border geometry rather than an image file, so width and height declarations on the element itself remain zero. Surrounding layout still needs to account for the border box. A border triangle cannot contain readable text and should be treated as decoration rather than an interactive control on its own. Dimensions are limited to three hundred pixels per axis for the preview, and the color input accepts a six-digit hexadecimal value.
Is input uploaded?
Processing takes place in your browser. This tool does not send your input or selected files to a conversion API.