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Free SEO & AI Search Tools
Small, single-purpose tools for technical SEO and AI-answer-engine optimization. No account, no email, no cost — pick one and use it.
SEO Tools
Rank higher on Google search results.
Robots.txt Checker
Enter your domain. We fetch your robots.txt and flag the issues that actually matter — a site-wide block, a missing sitemap declaration, or crawlers silently locked out.
Sitemap Validator
Enter your domain. We fetch your sitemap.xml (including nested sitemap index files), count what's in it, and flag anything malformed or over the limit.
SERP Preview
Type your title tag and meta description. See exactly how they'll be truncated in Google's search results, with live character and pixel-width counts.
Meta Tags Generator
Fill in your page's title, description, and image. We generate the title, meta description, Open Graph, and Twitter Card tags, ready to paste into your <head>.
Canonical Tag Generator
Enter your page's URL, and any language/region alternates. We generate the canonical tag and matching hreflang tags for your <head>.
301 Redirect Generator
Enter the old URL and the new URL. We generate the matching 301 redirect snippet for .htaccess, Nginx, Next.js, and Cloudflare — pick the one that matches your stack.
URL Slug Generator
Type a title. We turn it into a clean URL slug — lowercased, hyphenated, punctuation and common stop words stripped.
Favicon Checker
Enter your domain. We check for a declared <link rel="icon"> tag and the default /favicon.ico, and confirm whether each one actually loads.
Mobile Viewport Checker
Enter your domain. We check whether your page declares a valid <meta name="viewport"> tag, which mobile rendering depends on.
GEO Tools
Get cited in the AI search era.
AI Crawler Checker
Enter your domain. We read your robots.txt and tell you exactly which AI crawlers — GPTBot, ClaudeBot, PerplexityBot, Google-Extended, and more — are blocked from indexing your pages.
llms.txt Generator
Enter your domain. We read your sitemap, group the pages that matter into named sections, and write a spec-compliant llms.txt you can publish today.
AEO Tools
Be recommended in AI answers.
FAQ Schema Generator
Type your questions and answers. We generate valid FAQPage JSON-LD you can paste straight into your page — the same structured data AI answer engines and Google look for.
Organization Schema Generator
Enter your organization's name, URL, logo, and social profile links. We generate valid Organization JSON-LD you can paste into your homepage — an E-E-A-T signal search engines and AI models look for.
Article Schema Generator
Fill in your post's headline, author, publisher, and dates. We generate valid Article JSON-LD you can paste into the page — structured context AI crawlers use instead of guessing from the text.
Breadcrumb Schema Generator
Enter each level of your breadcrumb trail with its name and URL. We generate valid BreadcrumbList JSON-LD you can paste into the page.
Frequently Asked Questions
Are these tools really free?
Yes — every tool on this page runs with no account, no email, and no usage limit. There's no paid tier hidden behind them.
Why don't I need to sign up?
None of these tools save anything tied to you — each check runs live and the result is shown once. Signing up only matters for HellSEO's full audit, which saves history and lets you compare runs over time.
How is this different from HellSEO's full audit?
Each tool here checks one thing. The full audit scores 24 checks across SEO, AEO, and GEO at once, tracks score history, and includes things these tools don't cover — like backlink authority and Core Web Vitals.
Do you store the URLs I check or the files I generate?
No. Requests are processed and the response is returned — nothing is written to a database.
Will more free tools be added?
Yes, this page is actively growing. If there's a specific check you want turned into a free tool, that's useful signal for what to build next.
Want the full picture?
These tools check one thing at a time. A full HellSEO audit scores your site across SEO, AEO, and GEO — and gives you ready-to-paste fixes.
Run a Full Audit