When you need to crop images for social media
The usual trigger is a hard constraint somewhere else in the workflow: a size limit, a platform requirement, a reviewer, or a recipient who cannot open what you have. Crop a photo to the exact aspect ratio a social platform expects solves that in one pass instead of installing desktop software or handing the file to a third-party upload form. Because the job centres on JPEG (Joint Photographic Experts Group), it helps to know that a lossy raster format tuned for photographs, with adjustable quality.