Building Spark Slider: From AI Startup to Open Source

Demo: spark-slider.vercel.app
GitHub: github.com/AshBuk/framer-motion-spark-slider
📦 NPM: @ashbuk/spark-slider

When I first shared Spark Slider with friends, the reaction was the same:

“Oh, another React slider.”

That’s not entirely wrong —…


This content originally appeared on DEV Community and was authored by Asher Buk

Demo: spark-slider.vercel.app

GitHub: github.com/AshBuk/framer-motion-spark-slider

📦 NPM: @ashbuk/spark-slider

When I first shared Spark Slider with friends, the reaction was the same:

“Oh, another React slider.”

That’s not entirely wrong — but it’s not the full story either.

I originally built Spark Slider’s core while working at an AI startup. I wanted something minimal, fast, and visually fluid across laptops, phones, and kiosk screens — without the heavy abstractions of existing libraries like Swiper.

⚙️ What Makes It Different

  • Framer Motion animations — subtle blur, opacity, and depth transitions create natural focus.
  • Precision drag & swipe — smooth, momentum-free control.
  • Accessibility-first — full keyboard navigation and ARIA support.
  • Pure CSS — no Tailwind dependency, uses svh / svmin viewport units.
  • Lightweight core — ~12 KB gzipped, works with any React environment.

Under the Hood

The library follows a modular architecture with specialized hooks:

  • useSparkSlider — state & index logic
  • useSparkFullscreen — fullscreen mode
  • useSparkKeyboard — keyboard input
  • useSparkTransforms — dynamic transforms

All motion and interaction parameters are defined in a single source of truth:

config.ts.

Want to change how it feels? Tweak a few constants — and the slider’s behavior instantly adapts.

💡 A Thought on Open Source

It’s a valid takeaway — when a business model changes, it’s easy to just shelve the work and move on.
But making it open source gives that effort a second life — helping others build, learn, and create.

If this project resonates with you:

⭐ Star it on GitHub

or

🔗 Read the full deep dive on my blog


This content originally appeared on DEV Community and was authored by Asher Buk


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