All Free SEO Tools
Use a focused tool when you need to solve one SEO task quickly, or start with the full SEO Audit for a broader website review. Every tool below has its own dedicated page and can be used without creating an account.
Free Keyword Research Tool
Generate long-tail, question and intent-based keyword ideas without invented volume or difficulty data.
AI Crawler Checker
Check robots.txt access for major AI and search crawlers.
llms.txt Checker & Generator
Check for /llms.txt and create a clean starter file for your website.
Schema Markup Generator
Create JSON-LD structured data from information you provide.
Robots.txt Generator
Build a clean crawl-control file and declare your sitemap.
XML Sitemap Generator
Turn canonical URLs into a valid basic sitemap.xml file.
Broken Link Checker
Find links on a public page that return HTTP errors.
Google SERP Preview
Preview an SEO title, meta description and display URL.
Meta Tag Checker
Inspect title, description, canonical, robots, H1 and social metadata.
Redirect Checker
Trace 301, 302, 307 and 308 redirect chains to the final URL.
Hreflang Generator
Create alternate-language link tags for international SEO.
Heading Structure Checker
Review H1–H6 hierarchy and H1 count from HTML.
Keyword Density Checker
Analyze term frequency and repetition without arbitrary density targets.
Free Mobile Website Tester
Preview a live website at common phone and tablet sizes and review responsive-design signals.
Free Favicon Generator & Checker
Create favicons from text, initials or a logo, download a complete package, or check an existing website favicon.
Free Website SEO Auditing
The SEO Audit reviews observable on-page, technical, performance-related, accessibility, image, structured-data and security signals. Instead of presenting a score without context, the report explains what was detected, why an issue can matter and what can be changed.
Free AI Search Readiness Analysis
The AI SEO Audit examines whether a page is clear and machine-readable for modern search and answer systems. It reviews content quality, answer extraction, entity and topic clarity, trust signals, citations, conversational coverage, structured data and crawler accessibility without promising inclusion in any AI answer.
Backlinks and Link Maintenance
Use the Backlink Checker for available link-profile data and the Broken Link Checker to identify link destinations returning HTTP errors. The Redirect Checker can then trace redirect chains when a URL has moved.
Keyword and Content SEO Tools
The Keyword Research Tool generates long-tail and intent-led ideas without fabricating search-volume metrics. The Keyword Density Checker helps spot repetition, while the Heading Structure Checker shows the H1–H6 outline of pasted HTML.
Mobile Website & Responsive Design Testing
Use the Mobile Website Tester to preview a live page at common phone and tablet viewport sizes, rotate between portrait and landscape, and review observable mobile-readiness signals such as viewport configuration, responsive CSS and potential overflow risks.
Favicon Generator & Website Favicon Checker
Create a complete favicon package from text, initials or a logo with the Favicon Generator, or inspect a live website to see which favicon declarations are currently published.
Metadata and Search Appearance
Use the Meta Tag Checker to inspect title, description, canonical, robots and social metadata from a public page. Draft improved search copy with the SERP Preview Tool and review how the title, description and URL work together.
Technical SEO Generators
Create common technical SEO resources with the Schema Markup Generator, Robots.txt Generator, XML Sitemap Generator and Hreflang Generator. Each tool produces transparent output you can review before publishing.
AI Crawler and llms.txt Tools
The AI Crawler Checker reviews public robots.txt rules for common AI and search user-agents. The llms.txt Checker & Generator checks whether a site publishes the file and creates a conservative starter version. Neither tool claims that crawler access or an llms.txt file guarantees AI citations.
Free, No Login and No Credits
SEO Mentor's public tools are designed to be useful without registration, subscriptions or credit packs. Where reliable third-party metrics are unavailable, the tools do not invent them. Results should be used as evidence for investigation and improvement rather than as guarantees of rankings, indexing, traffic or AI visibility.
Professional SEO Implementation
If you want help implementing the findings, SEO Mentor is supported by SEOKart, a brand of Kart Digital. The tools remain free whether or not you use professional SEO services.