That disclosure language is likely fine, but making it an image could be problematic if you don’t include the disclosure in the alt text of the image to ensure accessiblity. As a general rule I don’t recommend making your disclosure an image – it might not load with the content etc. I would find other ways to work around the meta description…

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The other thing I was taught to do was to make the disclosure statement an image instead of text so that the meta description below my title in the search results wouldn’t show the disclosure instead of the description excerpt (since it’s positioned at the top of the post). Do you see any issue with doing that?