Every year, browsers get better at supporting modern web features, making frontend development smoother and more efficient. Interop 2025 is here, and it brings a fresh set of improvements to enhance performance, CSS, and APIs across browsers. Let’s dive into the most exciting changes!
🎯 Key Features in Interop 2025
1. Anchor Positioning 🔗
No more absolute positioning nightmares! This feature allows elements to be anchored to another element, making positioning tooltips, popovers, and dropdowns much easier—without relying on third-party libraries.
✅ Supported in: Chrome 125, Edge 125
❌ Not yet in: Firefox, Safari
2. View Transitions API 🔄
This brings native page transitions to Single Page Applications (SPAs), allowing smooth animations between states—no more complex JS workarounds!
✅ Supported in: Chrome 111, Edge 111, Safari 18
❌ Not yet in: Firefox
3. Backdrop Filter 🎨
The backdrop-filter property lets you create blur and transparency effects behind an element, enabling beautiful glassmorphism UI. While widely available, browser inconsistencies will be addressed in 2025.
✅ Supported in: Chrome 76, Edge 79, Firefox 103, Safari 18
4. Scoped Styles (@scope) 🎯
Finally, CSS styles can be scoped without relying on CSS modules! The @scope rule lets you define styles within a specific DOM subtree, reducing global pollution.
✅ Supported in: Chrome 118, Edge 118, Safari 17.4
🚧 Firefox: Behind a flag
5. Scrollend Event 📜
Tired of setTimeout hacks to detect when scrolling stops? The new scrollend event provides a built-in way to detect when scrolling has actually finished.
✅ Supported in: Chrome 114, Edge 114, Firefox 109
❌ Not yet in: Safari
6. Storage Access API 🔐
Cross-site authentication is getting better! The Storage Access API helps manage cookies across different origins while respecting privacy and security standards.
⚡ Performance & Core Web Vitals Improvements
Largest Contentful Paint (
LCP) & Interaction to Next Paint (INP): Improved implementation of these Web Vitals across browsers.WebAssembly Enhancements: Better support for JavaScript string builtins and resizable buffers, making WebAssembly more powerful.
Mutation Events Removal: The legacy
Mutation Events APIis finally being removed in favor of the much more efficientMutation Observer API.
🏆 What’s Next?
Interop 2025 is making great strides toward better browser interoperability, ensuring fewer inconsistencies and hacks for frontend developers. You can follow along on the Interop 2025 Dashboard and track progress.
What feature are you most excited about? Let’s discuss in the comments! 💬
Top comments (1)
Very exciting new features for browsers. The
backdrop-filteris so useful for creating glassmorphic elements.Looking forward to seeing the View Transitions API implemented in Firefox too