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View Transitions API Demo - Online Smooth Page Switch

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View Transitions API Demo

Experience smooth, native page-state transitions — no heavy libraries required.

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Demo 1 — Element Morph: Moving Shape

Click the purple circle or any dashed zone to morph the shape across the stage. Each move uses view-transition-name for seamless element-level animation.

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Shape color

Demo 2 — Card Grid: Click to Expand

Each card has a unique view-transition-name. Click any card — it smoothly morphs to fill the row while siblings reflow around it.

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Demo 3 — Gallery: Thumbnail to Preview

Select a thumbnail to smoothly transition the preview. Each thumbnail maps to an element with its own view-transition-name.

Demo 4 — Layout Switch: Grid ⇄ List

Toggle between grid and list layouts. Items reflow smoothly — the entire layout transition is captured by the API.

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Live Code — How It Works

The JavaScript behind these transitions is surprisingly simple:

// The core API — just wrap your DOM change: function smoothTransition(updateDOM) { if (typeof document.startViewTransition === 'function') { document.startViewTransition(() => { updateDOM(); }); } else { updateDOM(); // Fallback } } // CSS — Give elements a view-transition-name: /* .my-card { view-transition-name: card-expand; } */ // Customize duration in CSS: /* ::view-transition-old(root), ::view-transition-new(root) { animation-duration: 0.5s; } */

Browser Compatibility

BrowserVersionSupportNotes
Chrome111+ FullFull support for multi-page & SPA transitions
Edge111+ FullSame engine as Chrome; full feature parity
Opera97+ FullChromium-based, supports all features
Safari18+ PartialSPA transitions supported; multi-page in development
Firefox— Not yetUnder active development; expected in future release
Chrome Android111+ FullMobile-optimized transitions work smoothly
Safari iOS18+ PartialSPA mode supported; improving rapidly

Frequently Asked Questions

What is the View Transitions API?
The View Transitions API is a native browser feature that enables smooth, animated transitions between different states of a web page — whether that's navigating between pages (multi-page transitions) or updating the DOM within a single page (SPA transitions). It works by capturing snapshots of the old and new states, then automatically animating between them. You trigger it with document.startViewTransition() and can customize it via CSS pseudo-elements like ::view-transition-old and ::view-transition-new.
How does view-transition-name work?
The view-transition-name CSS property tags an element so the browser can track it across states. When two elements (old and new) share the same name, the browser morphs between them — animating position, size, and shape changes seamlessly. Each name must be unique on the page at any given moment. This enables impressive effects like cards expanding, images moving between galleries, or buttons transforming into modals.
Can I customize the transition duration and easing?
Yes! Use CSS to target the transition pseudo-elements: ::view-transition-old(root) and ::view-transition-new(root) for the page-level cross-fade, or use the element's view-transition-name like ::view-transition-old(my-element). Set animation-duration, animation-timing-function, and even animation-delay. You can also use CSS custom properties to dynamically control these values from JavaScript, as demonstrated in this tool's controls above.
Which browsers support the View Transitions API?
Chrome 111+, Edge 111+, and Opera 97+ have full support for both multi-page and SPA view transitions. Safari 18+ supports SPA transitions with multi-page support in development. Firefox is actively working on implementation. For unsupported browsers, the API degrades gracefully — your DOM updates still happen, just without the animated transition. Always feature-detect with if (document.startViewTransition) before using.
Is the View Transitions API good for SPAs like React or Vue apps?
Absolutely. The API shines in single-page applications. You can wrap route changes, state updates, or any DOM mutation inside document.startViewTransition(). Unlike CSS transitions which require predefined start/end states, the View Transitions API automatically handles the animation between any two states. This dramatically simplifies transition logic in frameworks — no more complex animation libraries for basic page transitions.
How does this differ from CSS transitions or animations?
CSS transitions require animatable CSS properties with defined start and end values on the same element. The View Transitions API works at a higher level — it captures full element snapshots (including layout, paint, and compositing) and can animate between completely different elements or page structures. It can morph one element into another, cross-fade entire pages, and handle layout changes that would be impossible with CSS transitions alone. Think of it as "transition anything to anything."
Can I use View Transitions for multi-page websites (MPA)?
Yes, but it requires opt-in. For same-origin navigations, add a <meta name="view-transition" content="same-origin"> tag to both pages. The browser will then automatically cross-fade between them. For more control, you can use CSS to customize the transition or add view-transition-name to elements on both pages for element-level morphing. This works without any JavaScript.
What are the performance implications?
The View Transitions API is designed to be performant. It leverages the browser's compositor thread for smooth animations. However, capturing snapshots does have a cost — the browser needs to paint both old and new states. For complex pages with many elements having view-transition-name, there can be a slight memory overhead. Best practice: only assign view-transition-name to elements that actually need to morph (typically 1-10 elements per transition), and keep transitions under 500ms for the best user experience.
How do I detect if the browser supports it?
Use a simple feature check: if (typeof document.startViewTransition === 'function') { /* supported */ }. This returns true for browsers with SPA transition support. For multi-page support detection, check if the @view-transition CSS at-rule is recognized. Always wrap your transition code with this check and provide a direct DOM update as fallback for unsupported browsers.
Can I abort or skip a view transition?
Yes. The document.startViewTransition() method returns a ViewTransition object with a skipTransition() method. Call transition.skipTransition() to immediately finish the transition without animation. The object also has ready, finished, and updateCallbackDone promises for fine-grained control over the transition lifecycle. This is useful for handling rapid successive transitions or user interruptions.
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