SiteTester
Best for fast launch checks when you want technical SEO, security, and page health in one pass.
Ahrefs Webmaster Tools
Best for site owners who want issue tracking alongside backlinks and crawl data.
Screaming Frog
Best for power users who want full-site crawling on their own machine.
Audit a site now
The content page should end in an audit action, not a dead-end summary.