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Search engines have no prepared summary to show, so the search snippet may be less persuasive and receive fewer clicks.

Add a concise meta description that communicates the page value.

Visitors using assistive technology may not know what information a field expects, blocking form completion.

Associate each field with a label or an accessible ARIA name.

The browser may pause page rendering while scripts download and execute, delaying visible content.

Use defer, async or modules where execution order permits.

If malicious code is injected, the browser has fewer restrictions preventing it from loading or sending data.

Start with a restrictive Content-Security-Policy and allow only resources the site actually needs.

Important content or controls may sit outside the viewport, creating a broken mobile experience.

Use flexible layouts, max-width:100% and responsive tables.