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CSS Triangle Generator

Create directional CSS triangles using the transparent border technique with sizing controls.

About CSS Triangle Generator

CSS Triangle Generator revives the classic transparent-border trick for tooltip tails and arrows without extra markup or SVG imports. Choose orientation plus width and height, pick a fill color, and preview how asymmetrical triangles behave on tight layouts. Copy width-zero height-zero boilerplate with precise border widths ready for pseudo-elements.

Why use CSS Triangle Generator

  • Ship tooltip pointers without images
  • Teach border hacks interactively
  • Tune skinny arrows for dense UI

How to use CSS Triangle Generator

  1. Choose direction toward the anchored edge
  2. Set dimensions and pick triangle color
  3. Copy snippet into ::before or ::after rules

When to use CSS Triangle Generator

  • Chat bubbles
  • Dropdown pointers
  • Step wizard connectors

Frequently Asked Questions

Why zero width height?

Collapsed boxes let opposing borders form triangles.

Can triangles be rounded?

Use SVG or clip-path instead for rounded tails.

Does border-box affect output?

Snippet assumes standard box sizing in modern resets.

HiDPI crispness?

Pure CSS triangles scale crisply because they are vector borders.

Privacy?

All math stays local.

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