Where do I paste this prompt?

Into any assistant that writes code: Claude, ChatGPT, Cursor, Lovable or Claude Code. Ask for a single index.html file, save it and open it in the browser. It uses canvas 2D.

Can I use it on my website?

Yes. The prompt is free and the code your assistant writes is yours. If you’d rather have the finished version, with your photos and words and ready to publish, there’s the related kit.

Is the video what really comes out?

Yes. It’s the page the prompt made, filmed without touching the code by hand, first time. Every assistant writes different code, so yours may vary a little.

Prompt of the day · 14 October 2026

A word made of particles that bursts under your cursor

What the prompt makes, filmed as it came out

The word “LUMEN” is drawn with thousands of glowing particles, amber to pink. The cursor blasts them away and they spring back into place, leaving soft trails. No libraries: one canvas and one loop.

Make one index.html, no libraries. Full-screen black hero. Draw the word "LUMEN" in a huge bold sans-serif on an offscreen canvas, wide enough to fill 85% of the screen width on any screen (phones too), centered. Sample its pixels every 4 px and turn each one into a particle. Particles spring back to their home spot with damping. The cursor (or a finger) is a 140 px force field that blasts them away, so the word bursts and re-forms. Each frame, paint a translucent black rect for soft trails and draw particles with additive blending so they glow, colored with a gradient from amber to hot pink across the word. Slow idle shimmer so it's alive even without input. Use typed arrays and one loop: 60 fps on a phone.

717 characters · Made with canvas 2D · worked first time · The post on X

What it’s for

The title of an event, a festival or a conference on its first screen.
A brand name or a product launch that people want to play with.
A 404 page or a “coming soon” page.

Variants to try

Add the line at the end of the prompt. We haven’t filmed these: try them yourself.

Your wordThe word is "KAIROS" instead of "LUMEN".
Your coloursGradient from cyan #4dd0e1 to white across the word.
Two linesTwo lines, "SÓNAR" and "2027", the second one smaller, both made of particles.

How to use it

Copy the prompt.
Paste it into Claude, ChatGPT, Cursor or Lovable and ask for a single index.html file.
Save the file and open it in your browser. To publish it, upload it to any static host (Cloudflare Pages is free).

Want it finished, with your photos and words?

The Event kit is the full version of this idea: a whole website you fill in in the browser and download.See the Event kit · €500

Or we set it up for you: send us your words and photos and we publish it at your domain within 48 working hours.

We set it up · €750

Questions

Where do I paste this prompt?: Into any assistant that writes code: Claude, ChatGPT, Cursor, Lovable or Claude Code. Ask for a single index.html file, save it and open it in the browser. It uses canvas 2D.
Can I use it on my website?: Yes. The prompt is free and the code your assistant writes is yours. If you’d rather have the finished version, with your photos and words and ready to publish, there’s the related kit.
Is the video what really comes out?: Yes. It’s the page the prompt made, filmed without touching the code by hand, first time. Every assistant writes different code, so yours may vary a little.