It is a very good add-on; but I have one issue with it - if the gif is a still image, it will display the text 'analysing gif' indefinitely. I can work around this by disabling the extension in private windows and browsing sites which majorly use still .gif images in said private window, but it would be nice to have an option to disable the add-on on specific sites. Other than that, a brilliant and useful add-on.