Best CSS attributes for Sanity Image hotspot implementation

Not a dumb question at all! The hotspot feature is super useful but the CSS implementation isn't always obvious.

When Sanity stores hotspot data, it gives you x and y values between 0 and 1 (representing 0-100% from the left/top edges). The key CSS attributes to use are:

For <img> tags or Next.js Image components:

Use object-position along with object-fit: cover:

function getPositionFromHotspot(hotspot) {
  if (!hotspot?.x || !hotspot?.y) return "center";
  
  return `${hotspot.x * 100}% ${hotspot.y * 100}%`;
}

// Usage
<img 
  src={imageUrl}
  style={{
    objectFit: 'cover',
    objectPosition: getPositionFromHotspot(image.hotspot)
  }}
/>

// Or with Next.js Image
<Image
  src={imageUrl}
  fill
  style={{
    objectFit: 'cover',
    objectPosition: getPositionFromHotspot(image.hotspot)
  }}
/>

For background images:

Use background-position along with background-size: cover:

<div style={{
  backgroundImage: `url(${imageUrl})`,
  backgroundSize: 'cover',
  backgroundPosition: `${hotspot.x * 100}% ${hotspot.y * 100}%`
}} />

The key conversion:

• Sanity's hotspot.x: 0.5 → CSS: 50% (horizontal center)
• Sanity's hotspot.y: 0.3 → CSS: 30% (30% from top)

The Sanity image hotspot documentation covers enabling hotspot in your schema, and there's a helpful community answer about using hotspot with Next.js that shows this CSS approach is often necessary because the Image URL Builder doesn't always automatically apply hotspot positioning in all frameworks.