Analyze any website for 30+ on-page SEO signals — meta tags, heading structure, image alt text, structured data, social tags, mobile friendliness, and performance. Free, instant, no signup.
An SEO checker examines a web page the same way Googlebot does — reading the HTML that the server returns, analyzing the meta tags, heading structure, content signals, and technical configuration. It surfaces the on-page issues that directly affect how well a page can rank in search.
This tool performs 30+ checks across 10 categories, producing a score and a categorized list of specific issues. Everything is free, instant, and requires no account. We never execute JavaScript or attempt to exploit the target site — we simply analyze what your server returns.
The title tag and meta description are the two most important on-page SEO elements. We check their presence, length, uniqueness, and quality. We also check for canonical URLs, robots directives, viewport, charset, and language declarations.
Search engines use headings to understand content hierarchy. We flag missing H1s, multiple H1s, empty headings, and skipped levels (H1 → H3 with no H2).
Thin content is one of the biggest reasons pages fail to rank. We measure word count after stripping scripts, styles, and markup.
Every image should have descriptive alt text for accessibility and image-search visibility. We report how many images are missing alt attributes.
Open Graph and Twitter Card tags determine how your pages look when shared on social media. Missing OG tags mean ugly, bare-link previews.
Schema.org markup enables rich snippets (star ratings, FAQ dropdowns, breadcrumbs) in search results — significantly boosting click-through rate. We detect JSON-LD and microdata.
We measure the ratio of internal to external links, flag empty anchor tags, and warn on excessive external linking that resembles link-farm behavior.
HTTPS status, robots.txt, sitemap.xml, favicon presence — the foundational technical signals that determine whether search engines can even crawl the site.
Google indexes mobile-first. We check viewport configuration and flag fixed-width layouts that break on phones.
Page size, HTTP compression, and external script count all influence ranking. We measure what we can observe from the HTML response alone.
Every issue is weighted by severity:
The score starts at 100 and subtracts the weighted penalty for every finding. A score of 90+ is excellent, 70–89 is good, 50–69 needs work, and below 50 indicates serious SEO problems.
After running thousands of checks, the same handful of problems come up most often:
Every one of these is a quick fix. Most take less than 5 minutes.
To set realistic expectations: this is an on-page SEO analyzer, not a full SEO platform. It does not:
For those, you need tools like Google Search Console (free), Ahrefs, or Semrush. This tool is designed to give you a fast, honest snapshot of the on-page issues on any single page.
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