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メタタグジェネレーター

SEOとSNS向けの完璧なメタタグを生成。Google、Facebook、X/Twitter、LinkedIn、WhatsAppのライブプレビュー付き。
Tip: Recommended image size: 1200×630px for optimal display on all platforms.
Live Preview
https://example.com
Your Page Title
Your meta description will appear here. Write a compelling description that encourages users to click through to your page from Google search results.
1200 × 630
example.com
Your Page Title
Your meta description will appear here.
1200 × 630
Your Page Title
Your meta description will appear here.
example.com
1200 × 627
Your Page Title
example.com
Generated HTML Code
Everything runs in your browser — no data sent to any server

メタタグジェネレーターを使う理由

すべてのWebページにメタタグが必要です。Googleが最初に読む情報です。

このツールが生成するもの

Title、meta description、canonical URL、robots、Open Graph、Twitterカード。

タグの使い方

HTMLコードをコピーしてページの<head>セクションに貼り付けます。

Open Graph & Social Media Tags Explained

Open Graph (OG) tags were created by Facebook and are now the standard for social sharing across most platforms. The essential tags are og:title, og:description, og:image, and og:url. Twitter/X uses its own Twitter Card format (twitter:card, twitter:title, twitter:description, twitter:image) but falls back to OG tags when they're absent. For best results, provide both sets — and use an image sized 1200x630 pixels for maximum visual impact on all platforms.

Meta Tag Best Practices

Follow these guidelines to get the most from your meta tags:

  • Keep titles under 60 characters — front-load your primary keyword for both SEO and readability
  • Write descriptions as ad copy — include a benefit and a call to action within 155 characters
  • Set a canonical URL — prevent duplicate content penalties when the same page is accessible via multiple URLs
  • Always include an OG image — links shared without images get significantly fewer clicks
  • Use unique tags per page — duplicate titles and descriptions dilute your SEO value

Common Meta Tag Mistakes to Avoid

Even experienced marketers slip up. Watch out for these frequent errors:

  • Duplicate title tags — every page should have a unique, descriptive title
  • Missing OG image — social shares without a preview image are almost invisible in feeds
  • Keyword stuffing — cramming keywords into the title or description hurts readability and can trigger Google penalties
  • Ignoring mobile truncation — mobile SERPs have tighter pixel limits than desktop; always test both
  • Forgetting the canonical tag — without it, search engines may index the wrong version of your page

よくある質問

メタタグはページの<head>内にあるHTML要素で、検索エンジンやSNSにページの内容を伝えます。
Googleはタイトルの約580ピクセル(50〜60文字程度)を表示します。
Googleは説明文の最大920ピクセル(150〜160文字程度)を表示します。
OGタグはFacebook、LinkedIn、WhatsAppで共有された際のコンテンツ表示を制御します。
X/TwitterはOGタグをフォールバックとして使用します。明示的なTwitterカードタグで完全な制御が可能です。
Yes, 100% free with no signup, no limits, and no ads. Everything runs in your browser — your titles, descriptions, and URLs are never sent to any server. Generate as many tag sets as you need.
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