SEO Auditor
SEO Auditor is a cutting-edge, completely free SaaS tool designed to help website owners, SEO professionals, and developers ensure their sites are not only optimized for traditional search engines but also fully visible and citable by modern AI answer engines like ChatGPT, Perplexity, and Google AI. It offers a comprehensive, instant audit without requiring any signup, payment, or crawl caps, making advanced SEO and AI-search readiness accessible to everyone.
Key FeaturesComprehensive Audits: Performs 40+ checks across 8 categories, including Classic SEO (title, meta description, canonical, hreflang, Open Graph, Twitter Cards, headings, alt text, robots) and AI-search readiness.AI-Search Readiness (GEO/AEO): Verifies llms.txt implementation, accessibility for AI crawlers (GPTBot, ClaudeBot, Perplexity), and the 'Island Test' to ensure content is structured for direct citation by AI.JSON-LD Validation: Meticulously parses and validates every schema.org block, checking for required and recommended fields across 18 common types (e.g., Article, Product, Recipe, FAQPage), and catching syntax errors.Actionable Fixes: Provides a copy-paste snippet and a link to the authoritative documentation for every identified issue, moving beyond generic problem statements.No Barriers: Completely free, no signup, no paywall, and no crawl cap, offering single-page deep dives or site-wide crawls of up to 25 pages from your sitemap.Fast & Efficient: Audits finish rapidly, typically within 3-5 seconds for single pages.
Use CasesSEO Auditor is invaluable for anyone looking to enhance their online presence in the evolving search landscape. Website owners can use it to quickly identify and resolve critical SEO issues that hinder visibility, ensuring their content reaches a wider audience. For content creators and marketers, it's a powerful tool to structure content in a 'citation-worthy' manner, making it more likely to be featured as direct answers by AI models, thereby boosting authority and traffic.Developers can leverage SEO Auditor to verify server-side rendering for Single-Page Applications (SPAs), ensuring that search engine and AI crawlers can properly access and index their content, rather than just an empty <div id="root"></div>. It also helps in validating structured data (JSON-LD) implementations, which is crucial for rich results and enhanced search snippets. By providing clear, copy-paste fixes, it streamlines the process of implementing best practices and correcting errors.
Pricing InformationSEO Auditor is entirely free to use, with no signup required, no paywall, and no crawl caps. The service is sustained through free hosting tiers (Vercel + Render), optional GitHub Sponsors, and tasteful affiliate links to enterprise tools that the creators genuinely recommend. All audit logic, fix suggestions, and report data will always remain ungated and accessible.
User Experience and SupportThe platform is designed for ease of use, requiring only a URL to initiate an audit. Reports are generated in seconds, presenting findings sorted by severity, each accompanied by a clear, copy-paste fix snippet and a direct link to the canonical documentation. This straightforward approach ensures that users, regardless of their technical expertise, can quickly understand and address identified issues. While direct support channels aren't explicitly detailed beyond an email contact, the comprehensive nature of the fixes and documentation aims to be self-serving.
Technical DetailsSEO Auditor operates by rendering and fetching web pages much like Googlebot and AI crawlers (GPTBot/ClaudeBot), validating schema.org blocks, and scoring Core Web Vitals. It accurately reflects what crawlers see, which is critical for search rankings. The tool is hosted on free tiers of Vercel and Render, demonstrating an efficient and lean operational model. It specifically addresses the challenges faced by client-side rendered SPAs, guiding users towards server-side rendering solutions for optimal crawlability.
Pros and ConsPros:Completely free with no hidden costs or signup.Unique focus on AI-search readiness (GEO/AEO) alongside classic SEO.Detailed JSON-LD validation for rich results.Provides actionable, copy-paste fixes with authoritative documentation.Fast audit times (3-5 seconds for single pages).Audits up to 25 pages from a sitemap for site-wide insights.Transparent about what it checks and what it doesn't.Cons:Does not provide backlink intelligence, keyword volume, or competitor traffic data (explicitly recommends other tools for these).Site-wide crawls are limited to 25 pages by default (though future tiers are mentioned).Single-page applications (SPAs) require server-side rendering to be properly audited.No explicit mention of direct customer support channels beyond an email.
ConclusionSEO Auditor stands out as an essential, forward-thinking tool for navigating the complexities of modern search and AI answer engines. Its blend of classic SEO checks with innovative AI-readiness assessments, coupled with its commitment to being free and providing actionable solutions, makes it an invaluable asset for anyone serious about their online visibility. Explore SEO Auditor today to future-proof your site's presence in the evolving digital landscape.
Artificial IntelligenceSEO & GEO
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