imgタグのfetchpriority属性
from
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imgタグのfetchpriority属性
https://speakerdeck.com/narirou/webpahuomansugao-su-hua-tokorekaranoakitekutiya?slide=34
https://calendar.perfplanet.com/2022/web-performance-apis-appreciation-post/#:~:text=images%20and%20iframes-,fetchpriority,-As%20you%20probably