Board Thread:Support Requests - Getting Technical/@comment-31671977-20170528042230/@comment-9605025-20170531042633

I think that is the only way to do it for images. If I recall correctly, MediaWiki does not provide the ability to specify the alt attribute of the img tag. Rather, it simply takes the caption and uses that as both the alt and the title. From the previous sentence, you probably figured out that you also cannot specify the title attribute.