Official ReferencesUse official Google, Schema.org, and MDN documentation for video, image, audio, JavaScript SEO, and iframes.Video structured dataGoogle Search CentralVideo SEO best practicesGoogle Search CentralVideo sitemaps and examplesGoogle Search CentralImage SEO best practicesGoogle Search CentralJavaScript SEO basicsGoogle Search CentralVideoObjectSchema.orgImageObjectSchema.orgAudioObjectSchema.orgThe iframe elementMDN Web Docs