Choose a Free SEO Tool
Start with a complete audit when you want a broader view of a website, or choose a focused tool when you already know what you need to check, generate or troubleshoot.
SEO Audit
Run a comprehensive website SEO review covering on-page, technical, accessibility, image, structured-data, performance and security signals.
AI SEO Audit
Evaluate content and technical signals that can affect how clearly AI-powered search and answer systems understand a page.
Backlink Checker
Review available backlink and referring-domain relationships for a domain.
Backlink Gap Checker
Compare your domain with competitors and find referring domains that link to them but not to you.
Website Authority Checker
Review backlink-based authority signals, referring-domain diversity and domain link strength.
Domain Authority Checker
Measure independent SEO Mentor authority and referring-domain strength without claiming proprietary DA or DR metrics.
Site Profiler
Build a website-level backlink and authority profile for competitor and SEO research.
SERP Checker
Research verified organic search results by keyword, country and device without invented rankings.
Competitor Backlink Checker
Research referring domains linking to a competitor and discover potential link opportunities.
Domain Comparison Tool
Compare backlink and referring-domain signals across multiple websites side by side.
Website Keyword Finder
Enter a website to discover relevant keyword ideas with country-specific search volume, competition and CPC data.
Keyword Research Tool
Generate useful long-tail, question, local, commercial, informational and comparison keyword ideas from a seed topic.
AI Crawler Checker
Inspect robots.txt rules to see how major AI and search crawlers are allowed or blocked.
llms.txt Checker & Generator
Check a website for llms.txt and generate a structured, downloadable file using discoverable site information.
Schema Markup Generator
Analyze a page and create a practical JSON-LD starting point that can be copied or downloaded.
Robots.txt Generator
Inspect an existing robots.txt file and create downloadable crawl directives for a website.
XML Sitemap Generator
Discover website URLs and generate a downloadable XML sitemap with support for up to 500 pages per run.
Broken Link Checker
Scan one page or crawl up to 50 website pages to find broken links, redirects and unreachable URLs.
SERP Preview Tool
Fetch a page title and description and preview how the search snippet may appear at common display widths.
Meta Tag Checker
Inspect title, meta description, canonical, robots directives and important search/social metadata.
Redirect Checker
Trace HTTP redirects, inspect individual hops and identify the final destination and response.
Hreflang Generator
Inspect existing language annotations and generate hreflang markup for international or multilingual pages.
Heading Structure Checker
Analyze a live page and review its H1–H6 hierarchy for structural and content issues.
Keyword Density Checker
Analyze visible page text to review term frequency, repetition and prominent words.
Mobile Website Tester
Preview a website across many phone and tablet viewport sizes and review observable mobile-readiness signals.
Favicon Generator & Checker
Create favicons from text or a logo, download multiple sizes and a complete package, or inspect an existing site favicon.
Meta Tag Generator
Generate title, description, robots, canonical and Open Graph tags with copy-ready HTML.
Open Graph & Social Meta Generator
Create Open Graph and Twitter/X sharing tags for pages and social previews.
Canonical Tag Checker & Generator
Inspect canonical implementation and generate a self-referencing canonical tag.
HTTP Status Code Checker
Check HTTP response codes and trace redirect hops for a URL.
Indexability Checker
Review HTTP, robots, X-Robots-Tag, canonical and robots.txt indexing signals.
XML Sitemap Validator
Validate sitemap structure, URL counts, duplicates and invalid URL entries.
Robots.txt Tester
Test whether the general crawler rules allow or block a specific website path.
Schema Markup Validator
Check JSON-LD blocks for valid JSON and declared schema types.
SEO URL Slug Generator
Convert a title or phrase into a clean lowercase hyphenated URL slug.
Word & Character Counter
Count words, characters, sentences and estimated reading time.
Internal & External Link Extractor
Extract links, anchor text and rel attributes from a public page.
Image SEO Checker
Review image alt attributes, dimensions and lazy-loading markup signals.
Core Web Vitals & PageSpeed Checker
Review observable performance signals and continue to Google PageSpeed Insights for measured metrics.
Search Engine Submission & Website Ping
Submit verified URLs or ping blog and RSS updates after publishing content.
Website Availability Test
Test website availability from real distributed probes in India, Singapore, Germany, the UK, USA and Australia.
Website Browser by Country
Render a visual screenshot of a public website through a selected country IP for regional appearance checks.
SSL Certificate Checker
Inspect live TLS certificate validity, expiry, issuer, hostname matching and connection details.
Global Website Speed & Ping Test
Compare network latency from six worldwide locations using real distributed probes.
Googlebot Crawl & JavaScript Dependency Test
Review Googlebot-style access, indexing directives and SEO content available in initial HTML.
A Practical SEO Toolkit for Real Website Work
SEO work rarely involves only one test. A page can have strong content but weak metadata, correct metadata but broken internal links, or good technical foundations while remaining difficult for search engines and AI systems to interpret. SEO Mentor brings complementary tools together so you can move from discovery to diagnosis and implementation without jumping between unrelated utilities.
The toolkit is designed for website owners, SEO professionals, agencies, developers, content teams and businesses that need straightforward information about publicly observable website signals. Reports and generators focus on explaining what was found, why it matters and what can be reviewed or improved next.
Website SEO Audits and Search Readiness
For a broad starting point, use the Free SEO Audit to review important on-page and technical signals. It brings multiple checks into one report so you can identify areas that deserve attention rather than checking each element manually.
The Free AI SEO Audit looks at a different layer of optimization: whether a page provides clear topics, useful answer passages, understandable entities, trust and support signals, conversational coverage, structured information and crawler accessibility that can help modern search and answer systems interpret the content.
Technical SEO, Crawling and Indexing Tools
Technical SEO problems can prevent good pages from being discovered, crawled or interpreted correctly. Use the Robots.txt Generator to inspect crawl directives, the XML Sitemap Generator to discover URLs and create a sitemap of up to 500 pages per run, and the Redirect Checker to follow redirect chains and final responses.
The Broken Link Checker helps identify destinations returning errors, while the HTTP Status Checker reviews response codes and redirect hops. Use the Indexability Checker, Sitemap Validator and Robots.txt Tester when you need focused checks for indexing signals, sitemap quality and crawl rules.
Metadata, SERP and Structured Data Tools
Search snippets and machine-readable page information deserve their own checks. The Meta Tag Checker reviews essential metadata such as titles, descriptions, canonicals and robots directives. The SERP Preview Tool provides a practical visual preview of the current title and description so you can review how the snippet may appear.
For structured information, the Schema Markup Generator analyzes a submitted page and creates a JSON-LD starting point for review, while the Schema Validator checks JSON-LD syntax and declared types. Use the Meta Tag Generator, Open Graph & Social Meta Generator and Canonical Tag Checker when creating or reviewing page-level search and social signals. International sites can use the Hreflang Generator to inspect and prepare alternate-language annotations.
Keyword, Content and Link Analysis
The Keyword Research Tool expands a seed topic into long-tail, question, commercial, informational, local and comparison ideas that can support content planning. The Keyword Density Checker analyzes the visible text of a live page to show prominent terms and repetition patterns.
For off-page analysis, the Backlink Checker provides available backlink and referring-domain information. Expand that research with the Backlink Gap Checker, Website Authority Checker, Domain Authority Checker, Site Profiler, Competitor Backlink Checker and Domain Comparison Tool. The Link Extractor inventories internal and external links, while the Word & Character Counter and URL Slug Generator help with practical content and publishing tasks. Backlink data is best used as one source of evidence rather than as a guarantee of authority or rankings.
AI Search and Crawler Tools
AI-powered search introduces additional questions about access and content understanding. The AI Crawler Checker reviews observable robots.txt rules for supported AI and search crawlers. The llms.txt Checker & Generator checks for an existing file and can create a structured downloadable version from discoverable website information.
These tools are intended to help you inspect and manage publicly visible website configuration. They should be used alongside strong content, clear site architecture, useful internal linking and sound technical SEO rather than treated as shortcuts to search visibility.
Mobile, Performance, Image and Favicon Tools
The Mobile Website Tester lets you preview a site at many practical phone and tablet CSS viewport sizes, switch between portrait and landscape, and review observable mobile-readiness signals. This is particularly useful when checking templates after a redesign or investigating responsive-layout problems.
The Favicon Generator & Checker can create favicons from text, initials or an uploaded logo, generate multiple standard sizes and package the files for download. The Image SEO Checker reviews observable image SEO signals, and the PageSpeed & Core Web Vitals Checker helps investigate performance signals and measured PageSpeed data.
Search Engine Submission and Discovery
When a page is ready to be discovered, use the Search Engine Submission & Website Ping Tool for supported URL submission and update-notification workflows. It provides practical discovery routes without promising that a search engine will crawl, index or rank a submitted URL.
How to Choose the Right SEO Mentor Tool
If you are beginning with an unfamiliar website, start with the SEO Audit and AI SEO Audit to establish a broader picture. If you already know the problem, use the focused tool that matches the task. A redirect problem does not require a complete audit; a missing sitemap does not require keyword research; and a mobile-layout review is easier in a dedicated responsive tester.
A useful workflow is to identify the issue, verify it with the relevant focused tool, make the change on the website and then test again. This makes the tools useful not only for finding problems but also for confirming that fixes have been implemented correctly.
Frequently Asked Questions About the Free SEO Tools
Are SEO Mentor tools free to use?
Yes. The tools on this page are available free of charge and are designed for quick SEO, website and AI-search checks without requiring a subscription.
Do I need to create an account or log in?
No. You can open a tool, enter the required website URL, keyword or other input, and run it without creating an account or using credits.
What is the difference between the SEO Audit and AI SEO Audit?
The SEO Audit focuses on traditional website SEO signals such as on-page elements, technical implementation, accessibility, images, structured data, performance indicators and security signals. The AI SEO Audit focuses on signals related to content understanding and answer extraction, including topic clarity, entities, trust signals, citations, conversational coverage, structured data and AI crawler accessibility.
Can SEO Mentor analyze an entire website?
Some tools work on a specific page while others can discover multiple URLs. The XML Sitemap Generator, for example, can discover and process up to 500 website URLs per run. A focused page-level tool may intentionally analyze only the URL submitted.
How does the XML Sitemap Generator work?
Enter a public website URL. The tool first looks for usable sitemap information and can discover internal pages when needed. It then creates an XML sitemap from the URLs it can identify, up to 500 pages per run, with an option to download the generated sitemap.xml file.
Can I generate and download robots.txt and llms.txt files?
Yes. The robots.txt tool can inspect the current file and produce a downloadable proposed robots.txt. The llms.txt tool can check an existing file and generate a downloadable llms.txt using discoverable website information for you to review before publishing.
What does the AI Crawler Checker test?
It reviews public robots.txt directives that apply to supported AI and search crawlers and explains whether the observable rules allow or restrict access. It does not bypass a website’s access controls.
Does the Mobile Website Tester use actual phone screen sizes?
The tester uses practical CSS viewport dimensions for a broad selection of phones and tablets, with portrait, landscape and custom-size controls. It is a responsive-design preview rather than a remote physical-device emulator, so important interactive layouts should still be checked on real devices when possible.
What can the Favicon Generator create?
You can create a favicon from short text or initials, or from an uploaded logo/image. The tool can generate individual 16×16, 32×32, 48×48, 180×180, 192×192 and 512×512 images, a multi-size favicon.ico, a web manifest and a complete downloadable favicon package.
Can I check an existing website favicon?
Yes. The Favicon Generator & Checker includes a website-checking mode that inspects publicly discoverable favicon declarations and helps you review the current setup.
What does the Backlink Checker show?
The Backlink Checker reports backlink and referring-domain information available to the tool for the submitted domain. Backlink databases can differ in coverage and update timing, so backlink totals from different services do not always match exactly.
Does the Keyword Research Tool show search volume or keyword difficulty?
The Keyword Research Tool is designed to expand a seed topic into useful long-tail and intent-based ideas. It does not present unsupported volume, CPC or difficulty values as if they were measured facts.
Can the Schema Generator automatically inspect my page?
Yes. Submit a public page URL and the tool can inspect available page information and existing JSON-LD before producing a suggested structured-data starting point. Generated markup should be reviewed to make sure it accurately represents the page before publication.
Can I use the tools for client websites?
Yes, provided you are authorized to work with the website and the site is publicly accessible. SEO Mentor is useful for agencies, developers, site owners, marketers and businesses carrying out routine website checks.
Will fixing every issue guarantee higher Google rankings?
No single audit, test or technical fix can guarantee rankings. Search visibility depends on many factors, including relevance, content quality, competition, site quality, technical accessibility and how well a page satisfies the searcher’s needs. Use the tools to identify opportunities and verify implementation, not as a ranking guarantee.
Which tool should I use first?
If you are unsure where to begin, start with the SEO Audit for a broad website review. Use the AI SEO Audit for AI-search-readiness, then use focused tools such as the Meta Tag Checker, Broken Link Checker, Sitemap Generator, Mobile Website Tester or Schema Generator when you want to investigate or complete a specific task.