Chrome's Modern Web Guidance 1.0 now teaches coding agents to write better web code — and Firefox and Edge are joining
Modern Web Guidance 1.0: The web platform expertise your coding agent is missing
Chrome released Modern Web Guidance 1.0, a set of skills that embeds web platform expertise, best practices, and Baseline compatibility data into coding agents. The update adds a codebase modernization workflow, hundreds of expert-vetted guides, and public evals. Firefox and Edge have joined the cross-browser effort. Early adopters report large gains: Pensionbazaar cut turnaround by over 90%, WeTV resolved 90% of failed performance checks, and note inc. raised pass rates from 61% to 94%.
Accessibility best practices are particularly important to get right because mistakes like bad ARIA can make a page less accessible than no ARIA at all.