Skills Guide

Meta Tags Checker

VerifiedCaution

Analyze and validate meta tags on web pages for SEO and social sharing. Detects missing titles, description issues, Open Graph problems, and canonical URLs.

Sby Skills Guide Bot
ContentBeginner
806/2/2026
Claude Code
#seo#meta-tags#open-graph#html-validation#social-sharing

Recommended for

Claude CodeUI/UX designerProduct managerSEO & contentWriter / marketerSolo / indie hacker

Our review

Analyzes and validates meta tags on web pages for SEO and social sharing.

Strengths

  • Detects missing or misconfigured meta tags
  • Checks title and description length
  • Supports Open Graph and Twitter Cards
  • Provides actionable recommendations

Limitations

  • Only checks HTML meta tags, not page performance
  • Cannot evaluate content quality beyond length
  • Only works on publicly accessible URLs
When to use it

Use this tool to quickly audit on-page SEO of a page before publishing or after changes.

When not to use it

Avoid using it for a full SEO analysis that requires external data like backlinks or traffic.

Security analysis

Caution
Quality score90/100

The skill uses Bash with bun to execute a TypeScript script that fetches a URL and parses meta tags. While the described actions are safe (read-only web analysis), the use of bun to run arbitrary local code introduces a risk if the script were compromised. No signs of obfuscation, data exfiltration, or destructive commands in the instructions.

Findings
  • •Runs a local TypeScript script via bun, which could potentially execute arbitrary code if the script is malicious; however, the intended behavior is benign web page analysis.

Examples

Basic meta tag check
Check meta tags on https://example.com
Verbose analysis with all tags
Run a verbose meta tag audit on https://example.com
JSON output for integration
Analyze meta tags of https://example.com and output results as JSON

name: check-meta description: Analyze and validate meta tags on web pages. Use when users ask to check meta tags, verify SEO tags, audit page titles, check Open Graph tags, verify canonical URLs, or analyze social sharing tags. Detects missing title, description issues, duplicate tags, and Open Graph problems. argument-hint: [URL] allowed-tools: Bash(bun:*), Read, WebFetch

Check Meta

Analyze and validate meta tags on web pages for SEO and social sharing.

Quick Start

cd /path/to/html-checker/scripts
bun src/check-meta.ts <URL>

CLI Options

| Option | Short | Default | Description | |--------|-------|---------|-------------| | --verbose | -v | false | Show all meta tags found | | --json | -j | false | Output results as JSON |

Checks Performed

| Check | Severity | Description | |-------|----------|-------------| | Missing title | Error | Page has no title tag | | Title too short | Warning | Title under 30 characters | | Title too long | Warning | Title over 60 characters | | Missing description | Error | No meta description | | Description too short | Warning | Description under 50 characters | | Description too long | Warning | Description over 160 characters | | Missing canonical | Warning | No canonical URL specified | | Missing og:title | Info | No Open Graph title | | Missing og:description | Info | No Open Graph description | | Missing og:image | Info | No Open Graph image | | Missing twitter:card | Info | No Twitter card meta | | Duplicate meta | Warning | Same meta tag appears twice |

Usage Examples

# Basic check
bun src/check-meta.ts https://example.com

# Verbose output
bun src/check-meta.ts https://example.com --verbose

# JSON output
bun src/check-meta.ts https://example.com --json

Output Example

Meta Analysis for https://example.com

Title: "Example Domain" (14 chars)
Description: "This domain is for use in illustrative examples..." (156 chars)

SEO Tags:
  [OK] title: Example Domain
  [OK] description: This domain is for...
  [MISSING] canonical

Open Graph:
  [MISSING] og:title
  [MISSING] og:description
  [MISSING] og:image

Twitter:
  [MISSING] twitter:card
  [MISSING] twitter:title

Issues Found: 5
  [WARNING] Title too short (14 chars, min 30)
  [WARNING] Missing canonical URL
  [INFO   ] Missing og:title
  [INFO   ] Missing og:image
  [INFO   ] Missing twitter:card

Recommendations:
  - Expand title to 30-60 characters
  - Add canonical URL to prevent duplicate content
  - Add Open Graph tags for social sharing

SEO Best Practices

  • Title: 30-60 characters, include primary keyword
  • Description: 50-160 characters, compelling call-to-action
  • Canonical: Always specify to prevent duplicate content
  • Open Graph: Essential for social media sharing

Related Files

  • Command: plugins/html-checker/commands/check-meta.md
  • Scripts: plugins/html-checker/scripts/src/check-meta.ts
  • Check Headings: plugins/html-checker/skills/check-headings/
  • Check Performance: plugins/html-checker/skills/check-performance/
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