Modern Web Guidance 1.0 launches with cross-browser support and agent integration

Modern Web Guidance 1.0 stable released on November 10, 2026, introducing a modernization workflow to scan codebases for improvement opportunities and a public eval dashboard measuring agent performance gains.
The project transitions to a cross-browser initiative with Firefox and Edge contributing to ensure compatibility based on Baseline data.
Success stories report significant efficiency gains, including a 90% reduction in page build turnaround time at Pensionbazaar and a 92% reduction in manual audit effort at Policybazaar.
Integration with Chrome DevTools for agents enables runtime verification of performance, animations, and memory management, with specific targets like keeping main thread blocking under 50ms.

Key Features and Updates

New modernization workflow uses static analysis to identify outdated workarounds, unnecessary dependencies, and polyfills for removal.
Guide database expanded to cover hundreds of verified AI knowledge gaps, with all guides undergoing human expert review including tech lead and accessibility expert approval.
Installation and updates available via npx modern-web-guidance@latest install or update, with plugins for Claude Code, Codex, Cursor, Antigravity, Copilot, WebStorm, Kimi Code, and Grok Build.

WeTV automated performance regression diagnosis, resolving 90% of failed checks and reducing debugging time by 87%.
note inc. improved modern web check pass rates from 61% to 94% across a 180-run evaluation on its production codebase by replacing custom JavaScript with native HTML/CSS.
MetaMask deployed the tool as an automated PR review bot, fixing 43 issues in 480 reviewed PRs during the first five weeks with a median resolution time of 15 minutes.