SEO Meta Tag Generator

Generate SEO, Open Graph, and Twitter Card meta tags with preview

🔒 100% ブラウザ内🆓 ずっと無料⚡ サインアップ不要
注意: 下記のツールインターフェースは現時点で英語のみに対応しています。UI の翻訳は順次進めています。 このツールを英語で見る →
Google-style preview
https://712tools.com
712 Tools - Free developer tools that just work
Free developer tools that run entirely in your browser. No sign-up, no uploads.

使い方

  1. 1
    Fill in the fields

    Title, description, canonical URL, OG image, and Twitter handle.

  2. 2
    Watch the preview

    See a Google-style SERP snippet and character-count warnings for the 60/160 limits.

  3. 3
    Copy the HTML

    Paste the generated block into the <head> of your page.

SEO Meta Tag Generator について

Free online meta tag generator. Fill in your page title, description, canonical URL, and OG image to get a complete set of SEO, Open Graph, and Twitter Card meta tags - with a Google-style preview and length warnings. Runs entirely in your browser. 712 Tools の SEO Meta Tag Generator はモダンな JavaScript API を使って完全にブラウザ内で動作します - サーバーがあなたのデータを見ることは一切ありません。つまり、即時の結果、完全なプライバシー、アップロード制限なしです。

デバッグ、簡単な確認、あるいは本番のインシデント対応まで - このツールは何度でも無料で使えます。ウォーターマークなし、サインアップなし、ツール内広告なし。

よくある質問

Why 60 and 160 characters?

Google truncates most titles around 60 characters and descriptions around 160 in desktop search results. The counter warns above those limits.

Do I need both OG and Twitter tags?

Twitter falls back to OG tags, so a minimal setup can skip the twitter:* duplicates. Including both gives explicit control on X.

Should my OG image be PNG or JPG?

Either. 1200×630 is the standard. Avoid SVG - many social platforms reject it.

続きを読む

5 分で読了

SEO meta tags that actually matter in 2026 (and the ones you can skip)

Half the meta tags in every 'ultimate SEO checklist' were obsolete a decade ago. Here's the short list that Google, social platforms, and AI crawlers actually read.

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