タイトル・メタディスクリプション
Your headline and your sales pitch in every results page and AI citation. 影響スコア: SEO + AIO
Small tags, outsized influence
The title tag is the strongest on-page statement of what a page is about. It becomes your clickable headline in search results, your browser-tab label, and the name AI assistants use when citing you. The meta description becomes the snippet under the headline; it rarely affects ranking directly, but it decides whether people click.
Missing either one forces search engines to improvise from page content, often badly and differently for every query.
What this site measures
Title presence and length (roughly 15–60 characters displays fully), meta description presence and length (roughly 50–160 characters), and exactly one H1 heading stating the page's topic. Each check shows the actual text our crawler saw.
How to improve
- Lead the title with what the page is, in the words your audience searches.
- One title per page, unique across the site; duplicates blur every page involved.
- Write the description as one honest sentence of benefit plus one of specifics.
- Put the brand at the end of the title, not the start, unless you're a household name.
- Keep one H1 per page that matches the title's promise.
Common mistakes
Home pages titled 'Home'. Keyword-stuffed titles that read like spam and get rewritten by Google anyway. Descriptions that repeat the title instead of adding specifics. Multiple H1s from copy-pasted page builders.
この指標でサイトの現状を確認する: 評価し、すべてのチェックに根拠を表示します。
自サイトを評価する →さらにガイドを見る
見つけてもらえるウェブサイトの作り方
Starting from zero? The platform choices, pages and foundations that decide whether your site is visible from day one.
完全ガイドを読む →正しい順序でウェブサイトを改善する
The improvement playbook: what to fix first, what compounds, and how to verify each step actually landed.
完全ガイドを読む →GEO・AEO・LLMO:新しい頭字語を解説
The three terms you'll hear most for AI-era optimization: what each means, how they differ, and what to actually do about them.
完全ガイドを読む →検索順位の仕組み
Crawling, indexing, ranking, and which of the three you actually control.
完全ガイドを読む →AI・回答エンジン(AIO)
A growing share of questions never reach a results page; an assistant answers them.
完全ガイドを読む →速度 & Core Web Vitals
Slow pages lose visitors before they load, and page experience feeds rankings.
完全ガイドを読む →