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Updated Images Need a Cache Strategy, Not Just Re-Uploading

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A corrected image that appears unchanged in production may be the result of caching rather than a failed upload. The article advises checking which file the browser actually receives, since editors, CDNs, and browsers can each reflect a different stage of an update. Responsive image variants have separate addresses, and a new original does not automatically regenerate thumbnails or invalidate cached responses. It recommends choosing a deliberate policy, such as content-hashed URLs or a considered revalidation or invalidation approach, and verifying both uncached and repeat loads. Teams should also record source versions and deployed URLs in release notes and compare requested URLs and response headers when versions differ.

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