FREE SEO TOOLKIT
Free SEO Tools for Schema, Audits and AI Search
Five free tools that check schema markup, on-page SEO, whole-site technical health and AI search readiness. No signup, no email gate, built from real client audits.
WHAT YOU GET
A free SEO toolkit built from real audits
These tools come from the checks I run in client SEO audits. Each one does one job and explains what it finds in plain language, so you can fix the problem without guessing. Use them on your own site, a client site or a competitor page.
Two of them crawl a whole website, one checks a single page in detail, and two help you create and test structured data. Together they cover technical health, on-page quality, schema markup and readiness for AI search engines such as ChatGPT, Claude, Perplexity and Google AI features.
ALL TOOLS
Free SEO tools you can use right now
Technical SEO Auditor
Crawls the pages listed in your sitemap and reports the problems that repeat across your site.
- Missing or badly sized titles and meta descriptions
- Missing or duplicate H1 headings
- Images without alt attributes and thin content
- Canonical, noindex and mobile viewport issues
Best for: spotting site-wide patterns across hundreds of pages in one report.
GEO Checker
Tests whether ChatGPT, Claude, Perplexity and Google can access, read and trust your page or your whole site.
- robots.txt access for OpenAI, Anthropic, Perplexity, Google and Bing crawlers
- Whether your content exists in the raw HTML
- Schema, entity links and trust signals
- Firewall and sitemap checks
Best for: sites that want to be visible in AI answers as well as classic search.
On-Page SEO Checker
Examines one page in detail against on-page SEO best practices.
- Title tag and meta description length
- H1, heading order and image alt attributes
- Word count, canonical and robots meta
- Target keyword count and placement
Best for: a final check before you publish or refresh an important page.
Schema Markup Generator
Builds clean JSON-LD structured data that you can copy and paste into your page.
- Article, Product and LocalBusiness
- FAQPage, Organization and Review
- Output is valid JSON, ready for any CMS
Best for: adding schema markup without writing code by hand.
Schema Markup Validator
Checks JSON-LD you already have for missing fields, wrong values and structural mistakes.
- Required and recommended fields for 15 schema types
- @graph and multi-type support
- Date, price and headline value checks
Best for: testing schema from a plugin or developer before it goes live.
PageSpeed Test
A simple page speed check is on the way.
SEO BASICS
The SEO basics behind these tools
What a technical SEO audit covers
A technical audit looks at how easy your pages are for search engines to crawl, understand and index. That includes titles, meta descriptions, headings, canonical tags, noindex directives, image alt attributes and thin content. The Technical SEO Auditor shows these problems across your sitemap in one report.
Why schema markup matters
Schema markup is structured data that tells search engines what a page is about, such as an article, product or FAQ. It does not directly raise rankings, but it can make a page eligible for rich results. Build it with the Schema Generator and test it with the Schema Validator.
What GEO means for AI search
Generative engine optimization, or GEO, is about making your site easy for AI answer engines to access, read and cite. That starts with basics such as letting AI search crawlers in and serving content in the raw HTML. The GEO Checker tests these signals, but no tool can promise an AI citation.
WORKFLOW
How to use the tools together
You can use any tool on its own. If you want a full free check of a website, this order works well.
- Run the Technical SEO Auditor on your domain to find problems that repeat across many pages.
- Open your most important pages in the On-Page SEO Checker with a target keyword and fix what it flags.
- Add missing structured data with the Schema Generator, then confirm it with the Schema Validator.
- Run the GEO Checker to confirm AI crawlers can reach and read your pages.
- Re-run the checks after your fixes, then request indexing of the updated pages in Google Search Console.
WHICH TOOL FIRST
Which SEO tool should you use?
| If you want to | Use |
|---|---|
| Check a whole site for basic SEO problems | Technical SEO Auditor |
| See if AI search engines can use your site | GEO Checker |
| Check one page against a target keyword | On-Page SEO Checker |
| Create schema markup from scratch | Schema Markup Generator |
| Test schema markup you already have | Schema Markup Validator |
WHO IT IS FOR
Who these free SEO tools are for
Business owners and founders
Get a plain-language health check of your own site after a redesign, or before you hire an SEO.
SEO specialists and agencies
Spot site-wide patterns quickly during audits and copy findings into your own reports.
Developers and content teams
Validate schema before release and catch missing titles, headings and alt attributes before pages go live.
HOW THEY WORK
Where your data goes
The Schema Generator, the Schema Validator and the Paste HTML mode of the On-Page Checker run entirely in your browser. The Technical SEO Auditor, the GEO Checker and the URL mode of the On-Page Checker fetch public pages from our server, because browsers block most cross-site requests. We do not save the pages or the results. Crawls are rate limited, and a short-lived counter per connection is kept for that purpose.
FAQ
Common questions about these SEO tools
Are these SEO tools really free?
Yes. All five tools are free with no signup and no email required. They use the same kinds of checks I run in client audits.
Do the tools store my website data?
No. The schema tools and pasted HTML run in your browser. The crawlers fetch public pages from our server to run the checks and do not save the pages or the results. A short-lived counter per connection is kept for rate limiting.
What is the difference between the Technical SEO Auditor and the On-Page SEO Checker?
The Technical SEO Auditor crawls many pages and reports common problems across a whole site. The On-Page SEO Checker examines one page in more detail, including how a target keyword is used.
What is GEO or generative engine optimization?
GEO is the practice of making a site easy for AI answer engines such as ChatGPT, Claude, Perplexity and Google AI features to access, read and cite. The GEO Checker tests those readiness signals, but it cannot guarantee citations.
Do I need schema markup for SEO?
Schema markup does not directly boost rankings, but it can make pages eligible for rich results and helps search engines understand your content. Use the Schema Generator to create it and the Schema Validator to test it.
Can these tools guarantee rankings or AI citations?
No. They find problems you can fix and check readiness signals. Rankings and AI citations depend on many factors that no free tool can measure or promise.
Why are the crawlers rate limited?
Crawling a site uses server resources on both ends. Limits keep the tools available for everyone and stop them being used to overload a website.
Which tool should I start with?
Start with the Technical SEO Auditor for a quick site-wide check, then run the On-Page SEO Checker on your most important pages. Use the GEO Checker to test AI search readiness, and the schema tools whenever you add structured data.
Need more than a free check?
I run full technical, on-page and AI search audits for growing brands and hand you a prioritized fix list.
