Web Animation Performance, CSS Highlights API, and AI Browser Concerns
Published on 12.11.2025
The Web Animation Performance Tier List
TLDR: Matt Perry provides a comprehensive guide to web animation performance, creating a tier list of animation techniques based on their impact on the browser's render pipeline and overall performance.
The Web Animation Performance Tier List
High-Performance Syntax Highlighting with CSS Highlights API
TLDR: The CSS Custom Highlight API offers a revolutionary approach to syntax highlighting by styling text ranges without DOM manipulation, eliminating performance overhead from thousands of span elements.
High-Performance Syntax Highlighting with CSS Highlights API
The Weird Parts of position: sticky
TLDR: Adam Rackis explores the common frustrations with CSS sticky positioning, explaining why it frequently fails and providing clear solutions for the most problematic scenarios.
The Weird Parts of position: sticky
GitHub Abandons Toast Notifications
TLDR: GitHub has moved away from toast notifications due to accessibility and usability issues, favoring banners and dialogs for better user communication.
Chrome DevTools MCP for Coding Agents
TLDR: Google's chrome-devtools-mcp allows AI coding agents to inspect and interact with live browser instances, enabling real-time feedback and verification of generated code.
Vivaldi's Critique of AI Browsers
TLDR: Vivaldi's CEO warns that new AI browsers create walled gardens that actively fight against the open web by trapping users in synthesized content rather than connecting them to actual websites.
A.I. browsers: the price of admission is too high
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