This document provides 10 SEO tips for web developers and designers, including keeping websites flat with content within 4 clicks of the homepage, using keyword-rich and static URLs without file extensions, adding semantic HTML tags like <title> and <h1-h2> with descriptive text, avoiding duplicate content through 301 redirects and canonical tags, using appropriate meta directives and HTTP status codes, including XML sitemaps to improve indexing, and providing sufficient on-page text content.