A photograph placed in a compact card does not always need the same amount of detail as a wide cover image. Sending the largest file everywhere can make the page do more work than the reader benefits from.

Responsive image markup can offer several suitable files and describe their intended sizes. The browser then chooses an appropriate candidate for the display conditions. Accurate dimensions also help the page reserve space before the picture arrives.

Inspect an image in a real layout rather than choosing sizes from the source photograph alone. Consider its crop, its visible detail, and its role. The right delivery keeps the visual idea clear while making the page lighter to receive.

Bring the idea into a day.

Consider a photograph appearing as a thumbnail and a full article image. Each placement needs enough detail without requesting an unnecessarily large file.

Another angle on the story.

The first useful part of a page deserves attention. A visitor should be able to understand its purpose while the rest of the experience becomes ready.
A few starting points
  1. Check the image’s actual display size.
  2. Provide suitable size variants.
  3. Reserve space with accurate dimensions.

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