SEO Checker

Paste your HTML code to analyze SEO issues and get a report

HTML Input

Analysis Results

Enter HTML code and click the check button

SEO Check Items

  • Title Tag: Check existence and length (30-60 characters recommended)
  • Meta Description: Check existence and length (50-160 characters recommended)
  • H1-H6 Structure: Check H1 count and heading hierarchy
  • Image Alt: Check for missing alt attributes in img tags
  • Canonical Tag: Check for canonical tag to prevent duplicate content
  • Viewport: Check viewport meta tag for mobile responsiveness
  • OpenGraph: Check og:title, og:description, og:image for social sharing
  • Link Analysis: Check internal/external links and nofollow attributes
Completed!

SEO Checker Usage Guide

SEO (Search Engine Optimization) is the practice of increasing website visibility in search engines. This tool analyzes HTML code to diagnose On-page SEO issues.

Check Items

Title Tag

Checks for the presence and appropriate length (50-60 characters) of page title.

Meta Description

Checks for the presence and length (150-160 characters) of description shown in search results.

Heading Structure

Checks the hierarchy and proper use of H1-H6 tags.

Image Alt Attribute

Checks for the presence of alternative text for images.

Importance of On-page SEO

On-page SEO helps search engines understand page content. Proper meta tags and structured content are essential for improving search rankings.

SEO Checklist

Item Recommendation
Title Tag 50-60 characters, include keywords, unique title
Meta Description 150-160 characters, include call-to-action
H1 Tag One per page, include keywords
Image Alt Descriptive alt text for all images
Canonical URL Specify canonical URL to prevent duplicate content

SEO Improvement Tips

  • Include keywords naturally in titles and descriptions
  • Use heading tags following hierarchy (H1 → H2 → H3)
  • Add meaningful alt attributes to all images
  • Set up Open Graph tags for social media sharing

Related Keywords

SEO Check On-page SEO Meta Tags Search Engine Optimization HTML SEO Open Graph

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