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