Image size and aspect-ratio guidance for social media — the exact dimensions that work best on each platform, why images get cropped unpredictably when the wrong ratio is used, and how to build one master image that survives being distributed to several destinations from a single RSS feed. Posts here are the practical reference for anyone whose automated posts include images, covering both platform-specific size charts and the underlying safe-zone principles that keep a single image looking intentional everywhere it lands.
