One Line. One Tag. One Massive Impact.
`<meta name="viewport" content="width=device-width, initial-scale=1">`
Without this tag, mobile browsers assume your page is designed for desktop and render it at ~980px wide. Then they zoom out to fit it on the screen.
The result? Tiny text. Tiny buttons. A terrible user experience.
Google flags this as "not mobile-friendly" and your rankings suffer. This is the foundation of responsive design and mobile-first indexing.
The Fix
Add that single meta tag to your `<head>`. That is it. One line. Google's SEO starter guide lists this as a basic requirement.
If you are using any modern framework (Next.js, Nuxt, etc.), this is usually included by default. But check anyway. You would be surprised how many sites are missing it.
Track it at seocheckup.app. 113 tasks. Free. 30 seconds.