Common SEO mistakes include ignoring mobile optimization, slow page speed, missing or duplicate title tags, poor content quality, no internal linking, ignoring local SEO, not using alt text for images, keyword stuffing, no schema markup, and neglecting technical SEO. Each mistake has specific fixes: use responsive design, compress images, write unique titles, create comprehensive content, link related pages, optimize for local keywords, add descriptive alt text, use keywords naturally, add JSON-LD structured data, and regularly audit your site.
