Parallax Effect Generator — Create CSS Parallax Scrolling

Q: How do I create a parallax effect with CSS?

The simplest CSS parallax uses background-attachment: fixed on a container with a background image. For more control, use CSS 3D transforms with perspective on a parent container and translateZ on child elements. Both are CSS-only but have limitations on mobile devices.

Q: Does parallax scrolling work on mobile?

CSS-only parallax (background-attachment: fixed) does not work on most mobile browsers. iOS Safari and many Android browsers ignore it. JavaScript-based solutions like fullPage.js provide consistent parallax across all devices including mobile.

Section One

Scroll down to see the parallax effect

Section Two

Background scrolls at a different speed

Section Three

Creating depth through motion

DEPTH

LAYERS

Multi-Layer Hero

Scroll down to see layers moving at different speeds

data-parallax-layer

↓ Scroll ↓

Tag Your Elements

Add data-parallax-layer="N" to any element. Higher numbers move faster.

Layered Depth Effect

Depth

Layers

FPS Smooth

Ready to use

Copy the generated code and paste it into your project

Get the code below ↓

Your Hero Title

Scroll down to see the parallax effect

↓ Scroll ↓

Content Section

The hero background moves at a different speed, creating a natural depth effect with pure CSS

Move Your Mouse

Elements shift based on cursor position

Scroll Parallax

Background images move at a different speed than content for a natural depth effect

Take It Further with fullPage.js

Get production-ready parallax with scroll snapping, touch support, and optimized performance out of the box.

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Parallax Type

Offset

Speed

fullPage.js adds

✓ Scroll snapping
✓ Lazy loading
✓ Callbacks & events
✓ 60fps performance

Get fullPage.js →

What Is the Parallax Effect?

The parallax effect is a visual technique where background elements move at a different speed than foreground content during scrolling. This creates an illusion of depth and immersion, making flat web pages feel three-dimensional.

The term comes from the Greek parallaxis (change in position). In web design, it translates to layered scrolling: backgrounds shift slowly while content scrolls at normal speed. When done well, it keeps users engaged and guides attention.

Below is a simple example using background-attachment: fixed, the most basic CSS parallax technique:

Scroll the page; background stays fixed

CSS Parallax Techniques

1. `background-attachment: fixed`

The simplest approach. The background image stays fixed relative to the viewport while content scrolls over it. Works in all desktop browsers but ignored on iOS Safari and many mobile browsers.

.parallax-section {
    height: 100vh;
    background-image: url('background.jpg');
    background-attachment: fixed;
    background-size: cover;
    background-position: center;
}

2. CSS 3D: `perspective` + `translateZ`

Uses CSS 3D transforms to create real depth. Elements with negative translateZ values appear further away and move slower. More performant than background-attachment: fixed but requires careful setup.

.parallax-container {
    height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
    perspective: 1px;
}

.parallax-layer-back {
    position: absolute;
    inset: 0;
    transform: translateZ(-1px) scale(2);
    background: url('background.jpg') center/cover;
}

.parallax-layer-front {
    position: relative;
    transform: translateZ(0);
}

3. JavaScript Scroll Listener

Use JavaScript to read scrollY and apply a transform to background elements. Offers full control over speed, direction, and easing, but requires requestAnimationFrame to avoid jank. Libraries like fullPage.js handle this optimally.

window.addEventListener('scroll', () => {
    const scrolled = window.scrollY;
    const bg = document.querySelector('.parallax-bg');
    bg.style.transform = `translateY(${scrolled * 0.5}px)`;
}, { passive: true });

Parallax Best Practices

Use `transform`, not `background-position`

Transforms are GPU-accelerated and don't trigger layout recalculations. Always prefer translate3d for smooth 60fps animations.

Respect `prefers-reduced-motion`

Some users experience motion sickness. Wrap parallax animations in a @media (prefers-reduced-motion: no-preference) query.

Optimize images

Parallax sections use large background images. Compress with WebP/AVIF, use srcset for responsive sizes, and lazy-load below-the-fold sections.

Test on real mobile devices

background-attachment: fixed is ignored on iOS. DevTools emulation doesn't catch this. Test on real phones.

Keep it subtle

A slight offset (30-60%) is more elegant than extreme parallax. The effect should enhance content, not distract from it.

FAQ

What is the parallax effect?

The parallax effect is a visual technique where background elements move at a different speed than foreground content during scrolling, creating an illusion of depth and immersion on web pages. It's widely used in modern web design to create engaging, interactive experiences.

How do I create a parallax effect with CSS?

The simplest method is background-attachment: fixed on a container with a background image. For more depth control, use CSS 3D transforms with perspective on a parent and translateZ on child layers. Both are CSS-only but have limitations on mobile devices.

Does parallax scrolling work on mobile?

CSS-only parallax (background-attachment: fixed) does not work on most mobile browsers. iOS Safari and many Android browsers ignore it entirely. JavaScript-based solutions like fullPage.js provide consistent parallax across all devices including mobile.

Is parallax scrolling bad for SEO?

Parallax scrolling itself does not hurt SEO. However, poor implementation can slow page load times and hurt Core Web Vitals. Use optimized images, prefer CSS transforms over JavaScript-heavy solutions, and ensure all content remains in the DOM for crawlers.