You don't need a $130/month tool to know if your website is healthy. These twelve checks cover what actually affects your search ranking and whether visitors stay. Work through them page by page — starting with your homepage.
Unique, under ~60 characters, describes the page, includes what you'd want to rank for. It's the headline in Google results.
120–160 characters selling the click. Missing one means Google picks random page text instead.
Exactly one main heading that states what the page is about, with a logical H2/H3 structure below it.
Every meaningful image needs a short description — for accessibility, for image search, and for when images fail to load.
Without the viewport meta tag your site renders as a shrunken desktop page on phones. Over half your visitors are on phones.
Body text needs a 4.5:1 contrast ratio against its background (WCAG standard). Low-contrast and invisible text is the most commonly missed issue — source-code checkers can't detect it, only rendered-page analysis can.
Every dead link loses a visitor and erodes trust. Check them regularly — links rot as pages get renamed and removed.
Server response over 2–3 seconds bleeds visitors and hurts ranking. Test from a normal connection, not just your office.
Small, but its absence looks unfinished in browser tabs and bookmarks.
Without OG tags, sharing your link on WhatsApp, LinkedIn or X shows a bare URL instead of a rich preview card.
Schema markup helps Google show rich results (stars, FAQs, business info). Missing it means plainer listings than competitors.
Make sure robots.txt isn't accidentally blocking your site and a sitemap.xml exists so search engines can find every page.
Each check is simple; doing all twelve on every page, regularly, is not. That's exactly what automated audits are for.