React Embeds

Provider-specific patterns for embedding third-party media in React — YouTube (incl. nocookie), SoundCloud (share URL vs. w.soundcloud.com player), Vimeo, Spotify, Bandcamp, Apple Podcasts, Twitter/X, Mastodon, Bluesky, CodePen, Figma, GitHub Gist. Each provider's iframable URL pattern, X-Frame-Options caveats, sandbox flags, aspect ratio, lazy loading, a11y (title attribute), responsive containers, and privacy-respecting variants (youtube-nocookie, dnt params). Use whenever rendering an iframe to a third-party platform — blog content, CMS embed URLs, social posts, media players. Triggers on "embed", "iframe", "YouTube", "SoundCloud", "Vimeo", "Spotify", "Bandcamp", "oEmb…