Act as a seasoned SEO content strategist with 5+ years of experience in visual content optimization. Provide a detailed guide on best practices for optimizing infographics for SEO, covering [TARGET AUDIENCE], [PLATFORM-SPECIFIC TIPS], and [METRICS TO TRACK]. Include actionable steps like using descriptive alt text, embedding shareable code snippets, and leveraging schema markup for rich snippets. Explain how to balance visual appeal with [KEYWORD PLACEMENT] and ensure mobile responsiveness for [TRAFFIC SOURCES]. Highlight common pitfalls (e.g., oversized files slowing page speed) and tools like [RECOMMENDED TOOLS] for compression and analytics. Format the response as a 10-step checklist with brief explanations.