SEO Tools

JSON-LD Validator

Check JSON-LD syntax and Google required properties

Hreflang Checker

Check international SEO alternates and generate tags

HTTP Link Header Parser

Parse RFC 8288 Link headers: rel, hreflang, title*

Keyword Density Checker

Analyze keyword usage and density

Meta Tag Generator

Create SEO-optimized meta tags

Sitemap Generator

Generate XML sitemaps

Robots.txt Generator

Create robots.txt files

Robots.txt Tester

Test crawler and path rules with winning-line explanations

XML Sitemap Validator

Validate pasted or local XML and XML.GZ files

Schema Generator

Generate structured data markup

Heading Anchor Generator

Collision-safe heading slugs and anchor links

htaccess Redirect Generator

Apache 301, HTTPS and www redirect rules

UTM Link Builder

Build campaign URLs with naming checks

Slug Generator

Create URL-friendly slugs

Table of Contents Generator

Build a nested TOC from HTML or Markdown headings

Title Tag Checker

Optimize page title tags

YouTube Metadata Checker

Title, description and tag limits

Word Count Checker

Count words and characters

Words to Pages Calculator

Estimate pages from words by font, spacing and margins

H1 Checker

Audit H1-H6 in true document order

Canonical Tag Checker

Check rel=canonical for duplicates, relative URLs and fragments

Robots Meta Tag Checker

Validate noindex, nofollow and snippet directives in robots meta tags

Meta Description Length Checker

Count meta description and title characters with a snippet preview

Anchor Text Checker

Find empty and generic anchor text and rel nofollow links

Image Alt Text Checker

Find missing, empty and filename-style image alt text

Open Graph Checker

Validate Open Graph tags against the ogp.me protocol

HTML Head Diff Checker

Diff staging vs production head tags and flag noindex or canonical mismatches

HTML Landmark Checker

List ARIA landmarks and find missing or duplicate ones

Heading Outline Diff

Compare old and new H1-H6 outlines

Readability Checker

Check content readability score

Meta Analyzer

Analyze website meta tags

Next.js Metadata Previewer

Paste a metadata export, see the head tags it emits

Social Preview Checker

Preview Facebook, LinkedIn, X, Discord and WhatsApp cards