Fixing Mobile Viewport Issues
In 2026, mobile-first indexing is the standard. If your QuickScanSEO report shows a missing viewport tag, your site may appear broken on smartphones.
The Solution
The viewport tag tells the browser how to adjust the page's dimensions to the screen width of the device. Simply add this line to your <head> section: <meta name="viewport" content="width=device-width, initial-scale=1.0">.