Well, I would prefer an attribute, that is already there for some elements (like css or js files): integrity="<hash>" This would kill two birds with one sto

Well, I would prefer an attribute, that is already there for some elements (like css or js files): integrity="<hash>" This would kill two birds with one stone: If it changes in HTML, this means: - Please bust cache - Refetch and ensure, that the fetched file is securely valid And it could be optional for every fetchable resource (img, video, css, js, etc.)