Methodology
How Our Free SEO Audit Works
The ZIT Solution free SEO audit is an automated review of your homepage and up to 50 more pages. It runs more than 90 checks, gives each of nine areas a score from 0 to 100 and combines them into one health score. This page explains exactly what it measures, where the data comes from and what it cannot tell you.
90+
checks per audit
9
areas, each scored 0 to 100
50
pages sampled besides the homepage
~2 min
to your report
What the audit checks
What does the audit check?
The audit groups its checks into nine areas. The weight shows how much each area counts toward the overall health score.
Indexing & crawling
robots.txt, XML sitemap, noindex tags, canonical tags, redirects, error pages
20% of the score
On-page SEO
Title tags, meta descriptions, H1 and heading order, image alt text, Open Graph tags, mobile viewport
14% of the score
Content quality
Thin or duplicate content, keyword stuffing, readability, author and date signals, sources
14% of the score
Technical & structure
HTTPS, mixed content, URL structure, redirects from http to https
12% of the score
Schema (structured data)
Organization, Article, Product, FAQ and Breadcrumb markup, and missing required properties
10% of the score
Internal linking
Broken internal links, links to redirects, pages with no contextual links
10% of the score
AI search (GEO)
AI crawler access in robots.txt, llms.txt, brand entity, contact and About pages
8% of the score
Answer engines (AEO)
Question headings, direct answers, FAQ markup, lists and tables
6% of the score
Performance
Server response time, page weight, scripts, image sizing, lazy loading
6% of the score
The score
How is the score calculated?
Each crawled page starts at 100 points. Every issue then takes points off, depending on how serious it is.
−15
Critical issue
Something that can stop a page from being found, such as a noindex tag or broken links.
−5
Warning
A problem that is likely to hold the page back, such as a missing meta description.
−1
Notice
A smaller improvement, such as a heading level that is skipped.
A page that cannot be loaded scores 0. For each of the nine areas, every problem lowers the area score by a share that grows with the number of pages affected, and site-wide problems such as a blocked robots.txt count too. The overall health score is the weighted average of the nine areas shown above.
The data
Where does the data come from?
Our crawler
It fetches your homepage, then pages linked from it and listed in your XML sitemap, up to 50 more pages. It identifies itself as SEO-Free-Audit.
Google PageSpeed Insights
Lighthouse lab scores for mobile and desktop, plus Core Web Vitals from real Chrome users when Google has enough data for your site.
Open PageRank
A 0 to 10 domain authority score and referring-domain count, based on Common Crawl link data.
RDAP
The public domain registration record, used for domain age.
Your SSL certificate
Read directly from your server to show when it expires.
AI insights
What are the AI insights?
When AI insights are switched on, the text of your homepage is sent to Claude, an AI model from Anthropic, which writes a short content review: what the business does, strengths and weaknesses, trust and freshness signals and suggested quick wins. The review is generated by AI and can contain mistakes, so treat it as a second opinion and check the facts before acting. Anthropic’s terms govern how it handles that text. See our privacy policy.
Treat it as a second opinion
- Generated by an AI model
- Can contain mistakes
- Check the facts before acting
The limits
What the audit does not tell you
Knowing what a tool cannot do matters as much as what it can.
Traffic or rankings
Only Google Search Console and your analytics hold your real numbers. We do not guess them.
A full backlink profile
We show an authority score, not a complete list of links.
Every page on a large site
We sample up to 50 pages, so a big site can have issues we did not see.
Speed as your visitors experience it
Server response time is measured from our server, not from your visitors’ devices.
Try it on your own site
See your scores in about two minutes. No credit card.
FAQ
Frequently asked questions
Is the audit really free?
Yes. Your first audit is free, with no credit card. Create a free account, enter your website and receive the full report on screen and by email. If you need more reports, paid plans are available.
Will the audit slow down or change my website?
No. It reads public pages a few at a time, the way a visitor or search engine would, and it never logs in or changes anything. Most audits finish in one to three minutes.
Can I audit a competitor’s website?
You can run the audit on any public website. Please only audit sites you own or have a legitimate reason to review, and do not use it to overload someone else’s server.
How accurate is the score?
The technical checks are factual, such as whether a page has a noindex tag or a broken link. Content checks are heuristics that flag pages for a human to review. The score is a guide to where to look first, not a prediction of rankings.