What the website check includes
- SEO — indexing, title, meta description, headings, canonical, robots.txt, Open Graph and structured data.
- Speed and Lighthouse — performance, accessibility, best practices and SEO scores, real Core Web Vitals, server response time and what exactly slows the page down.
- Content and links — text volume, internal and external links, anchors and images.
- Technical and security — HTTPS and certificate, redirects, security headers, compression, caching and non-existent pages.
- Domain and hosting — domain age, archive copy, SPF and DMARC, hosting and IP blacklists.
- AI readiness — whether robots.txt lets in the ChatGPT, Claude, Gemini and Perplexity bots, whether there is llms.txt, structured data and text that is easy to cite.
Free and paid parts
For free you see all the stages: what is fine and what is not, with short explanations. In the paid report the same indicators are opened with exact values: which tags and images exactly, which files slow the page down, which pages of the site duplicate headings or have broken links, which AI bots are blocked and what is missing for citation. Paid rows are marked with a lock: click any of them, and we will offer to sign up first (30 tokens as a gift) and then open the report.
What the SI index is
SI (StayIndexed Index) is our overall figure from 0 to 100 for the free stages: SEO, speed, technical state, domain and AI readiness. It shows the general state of a site, but does not predict search rankings: they are also determined by content, competition and links to the site.
How to use the report
- Start with the errors (red) in the SEO and “Technical and security” stages: they affect search the most.
- Then fix the warnings (yellow): meta description, headings, alt, speed.
- After the changes, check the site again to see the result.
- To track whether pages drop out of Google, use our indexing check.
Why AI readiness matters
More and more people look for answers in ChatGPT, Claude, Gemini and Perplexity. For your site to be cited, their bots must not be blocked in robots.txt, and the pages must be clear: a clear name and description, structured data, questions and lists, a date and an author. We check these signs by rules, without queries to models, so this is not an indicator of rankings in AI search, but a list of what is worth preparing.
What other tools there are
For individual topics use the specialised checks: site speed, robots.txt, SSL, sitemap, HTTP headers or broken links.
Limits of the check
We analyse one page (usually the home page) without running JavaScript and do not know your niche, competitors, traffic and links to the site. So the report shows technical quality and readiness, not a position in search. Some indicators (real Core Web Vitals data, domain age) are available not for every site. Bot protection may answer us differently than Google.
What else StayIndexed can do
This page is a free tool from the StayIndexed service. In your account you can open the paid report with exact values, while the service’s main job is to track whether your pages stay in Google and to alert you when they drop out.
How much it costs
The check is free, both on this page and in your account. Tokens are used to pay for the other services: indexing, speed and backlinks cost 3 tokens per check. 30 tokens are credited at sign-up, no card required.
Frequently asked questions
How do I check a website online?
Enter the site address in the form above: we will check SEO, speed, content, technical state, domain and AI readiness stage by stage and show a report with the SI index.
What is free and what is paid?
All stages with explanations are free. The paid report opens exact values: which elements and pages exactly, files that slow the speed down, duplicates and broken links across the site, an indexing check and AI evidence.
What does the SI index mean?
This is our overall indicator of a site’s state from 0 to 100 for the free stages. It does not predict Google rankings: they are also determined by content, competition and links.
Is sign-up required?
Not for the free part. The paid report requires sign-up through Google: after it we credit 30 tokens, and the report costs 20 tokens and is valid for 24 hours.
What is AI readiness?
It is a list of signs by which AI assistants will be able to find and cite your site: bots let in robots.txt, llms.txt, structured data, a clear entity and text that is easy to cite. We check them by rules, without queries to models.
Why does the speed score differ from another service?
Speed depends on load, region and the moment of the test. We take a Google PageSpeed Insights run for a mobile device, while other services may test differently.
How much does the website check cost?
The free version costs nothing. The paid report with exact values costs 20 tokens and is valid for 24 hours, and a repeat analysis of the same address during that time is free.