Choose a Free SEO Tool
SEO Audit
Run a broad website SEO review with actionable issue explanations.
AI SEO Audit
Review observable AI-search-readiness and content-understanding signals.
Backlink Checker
Review available backlink and referring-domain information.
Keyword Research Tool
Generate long-tail and intent-led keyword ideas.
AI Crawler Checker
Review robots.txt access for AI and search crawlers.
llms.txt Checker & Generator
Check for llms.txt and create a starter file.
Schema Markup Generator
Generate clean starter JSON-LD structured data.
Robots.txt Generator
Create crawl directives and declare your sitemap.
XML Sitemap Generator
Build a sitemap from canonical URLs.
Broken Link Checker
Find link destinations returning HTTP errors.
SERP Preview Tool
Preview title, description and display URL.
Meta Tag Checker
Inspect essential search and social metadata.
Redirect Checker
Trace redirect hops and final responses.
Hreflang Generator
Generate alternate-language annotations.
Heading Structure Checker
Review H1–H6 hierarchy from HTML.
Keyword Density Checker
Analyze term frequency and repetition.
Mobile Website Tester
Preview a website at common phone and tablet widths and review mobile-readiness signals.
Favicon Generator & Checker
Create a favicon from text or a logo, download a complete package, or inspect an existing website favicon setup.
Why SEO Mentor Keeps the Tools Free
Many everyday SEO checks can be performed from information supplied by the user or observable public website data. SEO Mentor focuses on those checks rather than forcing every task through a paid data API. When a metric cannot be supported reliably, the tool does not manufacture a number simply to make the report look more complete.
Start Broad or Solve One Problem
Use the full SEO Audit when you want a broad technical and on-page review. Use the AI SEO Audit for AI-search-readiness signals. The focused tools are better when you already know the task—for example tracing a redirect, generating schema, checking metadata or reviewing crawler access.