Free SEO tools for Google, AI and GEO

Eleven free tools to check and fix your website, with no sign-up: an SEO check of a page, Google indexing, robots.txt, structured data, a preview in Google. Each one adds what AI platforms look at, so that ChatGPT, Perplexity, Gemini or Claude can also read your website and cite it.

Preview in Google

SERP simulator See your title and description as Google shows them, on desktop and on mobile.Meta description checker Check the length, the cut-off point and the content of your description.Open Graph checker Check how your page looks when it's shared on LinkedIn, Facebook or WhatsApp.

Technical

Robots.txt generator Create a robots.txt file that sets each AI crawler, ready to copy.Robots.txt tester for AI Find out which AI platforms can read your website, crawler by crawler.Schema markup generator Produce the JSON-LD code for your business, your products or your FAQ.Google index checker Check whether a page is indexed by Google and, if not, why.

Content

On-page SEO checker Get a score out of 100 and the list of fixes for a page, AI checks included.H1 tag checker Check a page's H1 and its heading tree.Readability checker Measure how readable a text is, in your language.Keyword density checker Spot the words repeated too often in a text.

What these tools don't measure

Each tool examines one page or one file. None of them tells you whether AI platforms mention your business when your customers ask them a question: that's the role of the free AI SEO audit, which asks ChatGPT, Perplexity, Gemini and Claude 5 questions based on your website.

Frequently asked questions about free SEO tools, AI and GEO

What is the best free SEO tool?

Start with Google's and Bing's: Google Search Console and Bing Webmaster Tools give you the data for your own website, and nothing replaces them. iasyo's tools are for checking a page, a file or a text quickly, adding what AI platforms look at.

Can I do SEO for free?

The tools can be free, and you can do much of the work yourself. What costs is time: writing useful pages, fixing technical issues, getting cited elsewhere. You can also hand this work over to a provider.

What is the best free website SEO checker?

It depends on the question. For one page, iasyo's on-page SEO checker gives a score and the fixes. For the whole website, Google Search Console. For your presence in AI answers, the free AI SEO audit.

Do I need to sign up to use the tools?

No. All eleven tools can be used without an account or an email address. Beyond very heavy use, an anti-bot check appears.

What happens to what I enter?

Nothing is kept: not the addresses, not the pasted text, not the results. iasyo only keeps anonymous counters, such as the number of times each tool is used.

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