Create scroll-triggered reveal animations using IntersectionObserver, then copy the CSS+JS code with one click.
Zero dependencies Β· Works offlineπ Animation Effect
βοΈ Parameters
ποΈ Live Preview (Scroll down to see the effect)
Card 1
Animation triggers when scrolled into view
Card 2
Each element triggers independently
Card 3
Supports multiple animation effects
Card 4
Adjustable speed and delay
Card 5
Pure CSS+JS, zero dependencies
π Generated Code
π What Can CSS Scroll Reveal Generator Do?
The CSS Scroll Reveal Generator is an online tool that helps developers create scroll-triggered animations using the IntersectionObserver API. No third-party library needed β the generated code is lightweight and can be integrated directly into any project.
Key Features
- 8 animations: fade, four-direction slide, zoom, rotate, flip
- IntersectionObserver: native API, better performance than scroll events
- Full parameter control: duration, delay, distance, easing, threshold
- Zero dependencies: pure CSS+JS, no libraries required
How to Use
- Select an animation effect type
- Adjust animation parameters (duration, delay, distance, etc.)
- Scroll the preview area to see the effect
- Click "Copy Code" to get the CSS+JS code
- Add class="reveal" to your HTML elements to use it
Use Cases
Scenario 1: Landing pages
Make page elements appear one by one on scroll, creating narrative rhythm.
Scenario 2: Product showcases
Animate feature cards as they scroll into the viewport, boosting user engagement.
Scenario 3: Long pages
Add scroll animations to long articles or documents to reduce visual fatigue.
π FAQ
What is a Scroll Reveal animation?
Scroll Reveal is a web animation effect where elements animate when they scroll into the viewport, such as fade in, slide in, zoom and more.
What is IntersectionObserver?
IntersectionObserver is a native browser API used to asynchronously detect the intersection state between elements and the viewport. It performs better than scroll event listeners and is cleaner to write.
Do scroll animations affect SEO?
No. Search engine crawlers render CSS animations and IntersectionObserver correctly. But don't hide key content initially β use opacity:0 and transform instead of display:none.
How do I optimize scroll animation performance?
1) Only animate transform and opacity; 2) use will-change to hint the browser; 3) set a reasonable rootMargin; 4) use threshold to control trigger timing.
Which effects are supported?
Fade in, slide in from left/right/top/bottom, zoom, rotate and flip β 8 basic effects, each with adjustable direction, distance, speed and delay.