Website images: keep the quality, remove unnecessary weight
By Scallop Studio
A high-resolution photograph can be useful in the source library and unnecessarily heavy in a small card. The goal is not to compress every image as far as possible. It is to deliver enough detail for its purpose without making visitors download information they cannot see.
Map each image to a real use
List the places an image appears and the approximate display size at different breakpoints. A hero portrait, article thumbnail and small author avatar have different requirements.
Keep the original separately so later crops or larger layouts remain possible. Create delivery assets from that original instead of repeatedly recompressing an already compressed copy.
Compare formats visually
Export a few suitable sizes and formats, then compare them at their intended display size. Look for damaged edges, skin texture and lettering rather than judging only the file size.
Modern formats may reduce transfer size, but the best choice depends on the image and the delivery setup. Use the result that preserves the detail the visitor needs.
Protect the reading experience
Reserve the image space in the layout so surrounding content does not move unexpectedly when it arrives. Give meaningful images useful alternative text and leave decorative ones out of the reading flow.
Review loading order. The main visual should not wait behind unrelated decoration, while images far down the page can often be loaded later. Test the actual implementation rather than assuming a setting solved it.
Measure the page, not just the file
Check a representative phone and a constrained connection. Review when the main content becomes usable and whether any layout shifts interrupt the task.
Save the original measurement, the asset change and the new result. This makes it easier to distinguish an image improvement from a change caused by other scripts or network conditions.
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