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Abstraction: W3Schools reference for HTML img tag attributes and usage

Key points:

<img> requires src (path to image) and alt (fallback text) attributes
Always specify width and height to prevent page flickering during image load
Images are linked (not embedded) — the tag creates a holding space for the referenced file
loading attribute accepts eager or lazy for deferred image loading
srcset and sizes attributes support responsive images for different page layouts
Use CSS float, vertical-align for alignment instead of deprecated align attribute

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