On-page SEO scanner. Instant grade.
Checks the on-page fundamentals search engines use to rank your content: titles, meta descriptions, heading structure, alt text, canonical URLs and more. No signup, no server access needed.
What we check — and why
Title tag
The single most important on-page SEO element. Appears in search results, browser tabs and social shares. 50–60 characters is optimal.
Meta description
Not a direct ranking factor, but a compelling description improves click-through rates from search results — which does affect rankings.
Heading hierarchy
H1 through H4 tags create a scannable content outline. Gaps or missing levels confuse both readers and search engine crawlers.
Image alt text
Alt text makes images accessible and gives search engines context for image search. Missing alt text is one of the most common SEO gaps.
Canonical URL
Prevents duplicate content issues by telling search engines which URL is the authoritative version of a page.
Mobile viewport
Required for mobile-first indexing. Without it, Google treats the page as desktop-only, which hurts mobile rankings.
Open Graph
Controls how your page appears when shared on LinkedIn, Twitter, Facebook and messaging apps. Missing OG tags mean ugly, auto-generated previews.
Robots meta
Controls whether search engines can index the page. A stray noindex tag is a common cause of pages disappearing from search results.
Frequently asked questions
- What does the SEO scanner check?
- Title tag length and presence, meta description, H1 heading count and hierarchy (H2–H4), image alt text coverage, canonical URL, viewport meta tag, Open Graph tags, robots directives, internal vs external link counts, and page HTML size. All checks are performed against the live page.
- Does this tool need access to my server?
- No. The scanner fetches your page the same way a search engine bot does — over HTTPS from the public internet. No credentials, no server access, no installation. Just enter your domain.
- What does a letter grade of C or D mean?
- It means your page is missing several SEO fundamentals that search engines use to understand and rank your content. A D grade typically means serious gaps like a missing title tag, no H1, or missing viewport meta for mobile. Each failing check includes a plain-English explanation of what to fix.
- How is this different from Ahrefs or Semrush?
- Those platforms audit entire sites, track keyword rankings and analyse backlink profiles — useful for ongoing SEO campaigns. This scanner does one thing: checks the on-page fundamentals that determine whether search engines can even properly index your page. It is the first 10% that catches 80% of problems, and it is free.
- Is the scan result stored?
- We store the domain and scan timestamp so we can track which domains have been checked — but we never store the full page content. The scan fetches your page in real time and discards the HTML after the checks complete.
A scan finds the gaps. We fix them.
If your scan found issues you would rather have handled properly — missing structured data, poor heading structure, slow page speed, absent security headers — we do this every day.