Reconcile a converted/built web page against its source prototype with two complementary probes — a PIXEL/layout diff (stretched images, dropped wraps, blank renders, colour flips) and a STRUCTURAL content+typography diff (dropped/mis-slotted headings, eyebrows, CTAs; rendered-face font forks). Stack-agnostic via profiles (eds | generic).
Install
npx skills add adobe/skills --skill diffnpx skills add adobe/skills --skill diff -a claude-code -gnpx skills add adobe/skills --skill diff -a codex -ggemini skills install https://github.com/adobe/skills.git --path plugins/stardust/skills/diffgh skill install adobe/skills diffgit clone --depth 1 https://github.com/adobe/skills /tmp/adobe__skills
mkdir -p ~/.claude/skills ~/.agents/skills
cp -R /tmp/adobe__skills/plugins/stardust/skills/diff ~/.claude/skills/diff # Claude Code
cp -R /tmp/adobe__skills/plugins/stardust/skills/diff ~/.agents/skills/diff # Codex, Cursor, Gemini CLI, Copilot, OpenCode