Background Image Scroll Effect | Parallax & Scroll Animation with HTML CSS & JavaScript
Learn how to build a smooth Background Image Scroll Effect (parallax & scroll-triggered animations) using HTML, CSS, and JavaScript. This tutorial shows step-by-step how to create eye-catching backgrounds that move at different speeds, reveal content on scroll, and improve the UX of landing pages and portfolios.
What you’ll learn:
✅ Simple parallax background with CSS and background-attachment approach
✅ JavaScript-driven scroll animations for performant effects (using requestAnimationFrame)
✅ How to combine opacity, translateY, and scale for layered motion
✅ Responsive tips so the effect works on mobile & desktop
✅ Accessibility & performance best practices (debounce, lazy load images)
Resources:
Source code: (paste your GitHub link)
Live demo: (paste your CodePen/Netlify link)
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