CSS Triangle Generator
Free CSS triangle/arrow generator with a full 0-360° rotation slider — we checked a popular competitor (10015.io) directly and it only offers 8 fixed preset directions with no arbitrary angle control. It also solves a limitation that competitor's own docs admit: a border-trick CSS triangle 'can't have box-shadow' because it's a 0x0 element — this tool uses filter: drop-shadow() instead, which follows the actual rendered triangle shape correctly.
How it works
- Pick a base direction, size, and color
- Fine-tune with the 0-360° rotation slider for any angle, not just 8 presets
- Toggle Shadow for a drop-shadow that correctly follows the triangle's shape, then copy the code
Frequently asked questions
Can I rotate the triangle to any angle, not just up/down/left/right?
Yes — a 0-360° rotation slider on top of the base direction. We checked a popular competitor (10015.io) directly and it only offers 8 fixed preset directions, no arbitrary rotation.
Why can't I just add box-shadow myself?
A border-trick CSS triangle is technically a 0x0 element with only borders — box-shadow follows the invisible box, not the visible triangle, so it does nothing useful. That competitor's own documentation confirms this limitation. This tool's 'Shadow' toggle uses filter: drop-shadow() instead, which correctly follows the triangle's actual rendered shape.
Do I need to log in or does this cost anything?
No — everything runs in your browser, free, no account.
Related tools
From the blog
Update history
- 2026-09-01 Added: a cover image (a bold triangle rotated at an angle, casting a clean drop shadow like a paper cutout) — used as the card thumbnail, social share image, and blog title image.
- 2026-09-01 Launched: CSS triangle/arrow generator (no button) — direction preset + full 0-360° rotation slider, and a drop-shadow-based shadow toggle that correctly follows the triangle's shape (box-shadow can't). Entirely client-side.