About the SEO and marketing tools
These tools check the parts of a page that search engines and social apps read closely but visitors rarely notice: the title and description, crawl rules, the sitemap, the heading outline, the links and the card a shared link turns into. Most of them explain each finding in plain words, so you know what to change.
They are built for anyone who publishes on the web, from bloggers and shop owners to marketers reviewing a client’s site. Most fetch the live page from our server, in one location. Two work differently: the SERP Preview uses text you type and runs in your browser, and the Keyword Density Checker also accepts pasted text, which it counts in your browser.
Which tool to start with
Begin with the Meta Tag Checker, which reads a page’s title, description, canonical link and robots rules and flags a stray noindex. If a page is missing from search, the Robots.txt Tester tells you whether a crawler may fetch it and which rule decided, and the Sitemap Validator checks your sitemap against the sitemaps.org rules.
For the content itself, the Heading Structure Checker draws the H1 to H6 outline, the Keyword Density Checker lists the most-used words and phrases, and the Broken Link Checker tests up to 50 links on one page. Before you share or publish, the Open Graph Preview shows how a link will look in social and chat apps, and the SERP Preview mocks up a search listing while you write it.