SEO On-Page: Meta Description
Guides optimization of the meta description tag for search engines and SERP display.
When invoking: On first use, if helpful, open with 1–2 sentences on what this skill covers and why it matters, then provide the main output. On subsequent use or when the user asks to skip, go directly to the main output.
Scope (On-Page SEO)
- - Meta description: CTA; unique value; target keyword; unique per page
Length by Language
Google truncates by pixel width (~920px desktop, ~680px mobile), not character count. Character limits are approximate—CJK chars are wider (~2× Latin), so fewer fit in the same pixels.
| Script / Language | Meta description (chars) | Notes |
|---|
| Latin (English, Spanish, French, etc.) | 150–160 | Desktop ~158; mobile ~120 |
| CJK (Chinese, Japanese, Korean) |
75–100 | Full-width chars; 70–80 conservative; 90–100 on some locales/fonts; use pixel checker when available |
|
Cyrillic (Russian, etc.) | 140–155 | Slightly wider than Latin |
|
Arabic, Hebrew | 70–90 | RTL; variable width |
Pixel tools: Use a pixel-accurate meta tag checker for CJK—font and locale affect display; character counts vary by source (65–80 to 90–120 in practice).
Multilingual: Use locale-specific limits; localize, don't just translate. See localization-strategy, translation.
Initial Assessment
Check for project context first: If .claude/project-context.md or .cursor/project-context.md exists, read it for brand voice and target keywords.
Identify:
- 1. Page type: Homepage, landing, blog, product, etc.
- Primary keyword: Target search query
- Language / script: Apply length rule above
- CTA: Primary action (sign up, learn more, buy, etc.)
Best Practices
| Item | Guideline |
|---|
| Length | Per language (see table above); ~150 chars sweet spot for Latin; truncates beyond pixel limit |
| Unique |
One per page; no duplicate descriptions |
|
Intent | Answer "why should I click?"; match search intent |
|
CTA | Include clear call-to-action when relevant |
|
Keyword | Naturally include target keyword |
|
Content | Include author, date, price where relevant |
|
Impact | Does not affect ranking; well-written descriptions improve CTR 5–10% |
Output Format
- - Recommended meta description (with character count for target language)
- Alternatives (if A/B testing)
GSC-Driven Optimization
For pages with low CTR despite good position, use google-search-console to identify opportunities. Optimize meta description for pages with CTR gap.
Related Skills
- - google-search-console: CTR analysis, identify low-CTR pages for meta optimization
- title-tag: Title pairs with description in SERP
- localization-strategy, translation: Multilingual metadata; locale-specific length
- serp-features: SERP features; standard result appearance in context
- heading-structure: H1 should align with title; description summarizes content
- open-graph: og:description for social sharing (often mirrors or extends meta description)
- keyword-research: Keywords in content inform description
SEO 页面优化:元描述
指导优化搜索引擎和搜索结果页显示的元描述标签。
调用时:在首次使用时,如有帮助,可先用1-2句话说明此技能涵盖的内容及其重要性,然后提供主要输出。在后续使用或用户要求跳过时,直接进入主要输出。
范围(页面SEO)
- - 元描述:行动号召;独特价值;目标关键词;每页唯一
按语言划分的长度
谷歌按像素宽度(桌面端约920px,移动端约680px)截断,而非字符数。字符限制为近似值——中日韩字符更宽(约为拉丁字符的2倍),因此在相同像素内可容纳的字符更少。
| 文字系统 / 语言 | 元描述(字符数) | 备注 |
|---|
| 拉丁文字(英语、西班牙语、法语等) | 150–160 | 桌面端约158;移动端约120 |
| 中日韩文字(中文、日语、韩语) |
75–100 | 全角字符;保守值70–80;某些地区/字体下为90–100;有条件时使用像素检查工具 |
|
西里尔文字(俄语等) | 140–155 | 略宽于拉丁文字 |
|
阿拉伯语、希伯来语 | 70–90 | 从右到左;宽度可变 |
像素工具:对中日韩文字使用像素精确的元标签检查工具——字体和地区会影响显示效果;字符数因来源而异(实际应用中为65–80到90–120)。
多语言:使用特定地区的限制;进行本地化,而非仅翻译。参见本地化策略、翻译。
初步评估
首先检查项目上下文: 如果存在 .claude/project-context.md 或 .cursor/project-context.md,读取其中的品牌语气和目标关键词。
识别:
- 1. 页面类型:首页、落地页、博客、产品页等
- 主要关键词:目标搜索查询
- 语言/文字系统:应用上述长度规则
- 行动号召:主要操作(注册、了解更多、购买等)
最佳实践
| 项目 | 指南 |
|---|
| 长度 | 按语言(见上表);拉丁文字最佳约150字符;超出像素限制则截断 |
| 唯一性 |
每页一个;无重复描述 |
|
意图 | 回答为什么我应该点击?;匹配搜索意图 |
|
行动号召 | 在相关时包含明确的行动号召 |
|
关键词 | 自然地包含目标关键词 |
|
内容 | 在相关时包含作者、日期、价格 |
|
影响 | 不影响排名;编写良好的描述可提升点击率5–10% |
输出格式
- - 推荐的元描述(附带目标语言的字符数)
- 备选方案(如需A/B测试)
基于Google Search Console的优化
对于排名良好但点击率较低的页面,使用google-search-console识别机会。优化点击率差距较大的页面的元描述。
相关技能
- - google-search-console:点击率分析,识别需要优化元描述的点击率较低页面
- title-tag:标题与描述在搜索结果页中配对
- localization-strategy, translation:多语言元数据;特定地区的长度
- serp-features:搜索结果页功能;标准结果在上下文中的显示
- heading-structure:H1应与标题对齐;描述总结内容
- open-graph:用于社交分享的og:description(通常镜像或扩展元描述)
- keyword-research:内容中的关键词为描述提供依据