2nd/10_Wiki/Topics/AI_and_ML/First Input Delay (FID).md

id, title, category, status, canonical_id, duplicate_of, aliases, source_trust_level, confidence_score, verification_status, tags, last_reinforced, github_commit

id	title	category	status	canonical_id	duplicate_of	aliases	source_trust_level	confidence_score	verification_status	tags	last_reinforced	github_commit
wiki-2026-0508-first-input-delay-fid	First Input Delay (FID)	10_Wiki/Topics	duplicate	wiki-core-web-vitals	Core-Web-Vitals	FID INP interaction to next paint	A	0.9	redirected	duplicate web-vitals fid inp performance	2026-05-10	pending

First Input Delay (FID)

이 문서는 Core-Web-Vitals 의 specialization 입니다. Canonical 문서로 redirect.

핵심 요약

• 매 first user input → 매 browser response.
• DEPRECATED 2024-03: 매 FID → 매 INP (Interaction to Next Paint).
• 매 INP target: < 200ms good, < 500ms needs improvement.
• 매 측정: PerformanceObserver event timing.

import { onINP } from 'web-vitals';
onINP(({ value }) => analytics.track('INP', { value }));

🔗 Graph

• 부모: Core-Web-Vitals (canonical)
• 후속: Interaction-to-Next-Paint-INP

🕓 변경 이력

날짜	변경
2026-05-08	Phase 1
2026-05-10	중복 처리 — canonical 문서로 redirect (note: 2024-03 INP 의 replace)