SeoStratum — free website SEO audit tool

Free website SEO audit: every page gets a score, every issue gets a fix

Paste any URL and get a free website SEO audit you can act on: a score, the strengths of the page, every issue ranked by severity and the concrete fix for each one. No installation, no configuration — most reports are ready in under 30 seconds.

What the free SEO audit checks

Each scan inspects the on-page and technical factors that decide whether a page is able to rank:

  • Meta tags: title length and relevance, meta description, canonical URL and robots directives
  • Content structure: exactly one H1, a logical H2/H3 hierarchy and enough unique text
  • Internal linking: crawlable anchors that spread authority across the site
  • Images: descriptive alt text and modern formats such as WebP or AVIF
  • Indexability: status codes, redirects, robots.txt and sitemap.xml
  • Structured data: valid JSON-LD for Organization, WebSite and WebApplication
  • Real performance: Core Web Vitals (LCP, INP, CLS) measured on mobile
  • Security and mobile usability: HTTPS, viewport and tap-target sizing

How the audit works

  1. Enter the URL you want to analyze: a homepage, a landing page or a single article.
  2. The crawler fetches the page and evaluates more than 20 ranking factors.
  3. You get a prioritised report — critical issues first, then warnings — each with its own fix.

Why teams use SeoStratum

Most tools tell you that something is wrong; SeoStratum tells you what to change and why it matters, in plain language. The free plan includes three audits a day with no credit card, and saved reports stay in your account so you can compare a page before and after an edit. Every finding links back to the check that produced it, so you always know where the number in your score comes from.

Frequently asked questions

Is the SEO audit really free? Yes. You can run three audits a day without paying and without entering a card. Create a free account to save reports and follow their history.

Do I need to install anything? No. The audit runs entirely in your browser against the URL you provide.

How long does a scan take? Most pages return a full report in under 30 seconds. When live Core Web Vitals are available from PageSpeed Insights, they are added to the report automatically.

Create a free account to keep your reports, or read the SEO guide to understand each check before you fix it.