docs(10_Wiki): W3Schools 위키화 — HTML/CSS/JavaScript(core)

W3Schools 튜토리얼을 P-Reinforce v3.1 포맷으로 위키화(영어 본문, 한/영 섹션 헤더). - Topic_HTML: 59문서 (튜토리얼+예제, 레퍼런스/메타 제외) - Topic_CSS: 190문서 (메인 + Advanced/Flexbox/Grid/RWD 전체) - Topic_JavaScript: 120문서 (코어 언어; Temporal/DOM상세/BOM/WebAPI/AJAX/jQuery/Graphics 등은 후속) 각 폴더 00_INDEX.md(MOC) 포함. 코드 verbatim, 미확인분은 "Not found in source" 표기. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-23 19:21:18 +09:00
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+---
+id: html-favicon
+title: "HTML Favicon"
+category: "Frontend"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["favicon", "link rel icon", "favicon.ico", "browser tab icon", "site icon"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.88
+created_at: 2026-06-23
+updated_at: 2026-06-23
+review_reason: ""
+merge_history: []
+tags: ["html", "web", "frontend", "w3schools", "favicon", "head"]
+raw_sources: ["https://www.w3schools.com/html/html_favicon.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[HTML Favicon]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+A favicon is a small image displayed next to the page title in the browser tab, added by placing a `<link rel="icon">` element in the document's `<head>`. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **What a favicon is** — a small image displayed next to the page title in the browser tab. [S1]
+- **Design guidance** — since a favicon is a small image, it should be a simple image with high contrast. [S1]
+- **How to add it** — use the HTML `<link>` element inside the `<head>` section (after the `<title>` element); favicons can be sourced from sites like favicon.cc or custom-created. [S1]
+- **File placement** — put the favicon in the site's root directory or an `/images` folder. [S1]
+- **Format support** — ICO, PNG, GIF, JPEG, and SVG favicon formats are supported across Edge, Chrome, Firefox, Opera, and Safari. [S1]
+
+## 🧩 추출된 패턴 (Extracted patterns)
+- **Favicon link pattern** — `<link rel="icon" type="image/x-icon" href="/images/favicon.ico">` placed in `<head>`. [S1]
+- **Head-placement pattern** — the `<link>` goes after the `<title>` element. [S1]
+
+## 📖 세부 내용 (Details)
+A favicon is a small image displayed next to the page title in the browser tab. [S1]
+
+**Adding a favicon**
+Favicons can be sourced from sites like favicon.cc or custom-created images. A favicon is a small image, so it should be a simple image with high contrast. Place the favicon in your site's root directory or an `/images` folder, then add a `<link>` element to your HTML `<head>` section after the `<title>` element. [S1]
+```html
+<!DOCTYPE html>
+<html>
+<head>
+  <title>My Page Title</title>
+  <link rel="icon" type="image/x-icon" href="/images/favicon.ico">
+</head>
+<body>
+<h1>This is a Heading</h1>
+<p>This is a paragraph.</p>
+</body>
+</html>
+```
+
+**Supported favicon file formats**
+The guide includes a compatibility matrix showing support across Edge, Chrome, Firefox, Opera, and Safari: [S1]
+
+| File format | Edge | Chrome | Firefox | Opera | Safari |
+|---|---|---|---|---|---|
+| ICO | Yes | Yes | Yes | Yes | Yes |
+| PNG | Yes | Yes | Yes | Yes | Yes |
+| GIF | Yes | Yes | Yes | Yes | Yes |
+| JPEG | Yes | Yes | Yes | Yes | Yes |
+| SVG | Yes | Yes | Yes | Yes | Yes |
+
+**Key takeaway** — use the HTML `<link>` element to insert a favicon within your document's head section. [S1]
+
+## 🛠️ 적용 사례 (Applied in summary)
+The full HTML document with the favicon `<link>` above is the canonical applied example from the source. No external project/commit applications found in the source.
+
+## 💻 코드 패턴 (Code patterns)
+Favicon link in head (HTML):
+```html
+<head>
+  <title>My Page Title</title>
+  <link rel="icon" type="image/x-icon" href="/images/favicon.ico">
+</head>
+```
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+No contradictions found in the source.
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual (실제 적용 사례 발견 시 applied/validated로 승격 가능)
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.88
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[HTML Tutorial]]
+- **관련 개념:** [[HTML Page Title]], [[HTML Images]], [[HTML Head]], [[HTML Introduction]]
+- **참조 맥락:** Referenced when branding a page in the browser tab and bookmarks via a small icon.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — HTML Favicon — https://www.w3schools.com/html/html_favicon.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-06-23: Initial draft synthesized from the W3Schools "HTML Favicon" page (Astra wiki-curation, P-Reinforce v3.1 format).