1. Let's say I use the same image (with the same path on my webspace) in several articles (instead of only one). Does this improve the rankings of the image?
horses.png is used in the articles
2. If I want to use the same image in several articles is it better to save the image file under different filenames?
animals-horses.png is used in the article
pets-horses.png is used in the article
horses.png is used in the article
Why I ask
I think there is trade-off: The first example would rank
horses.png higher than in the second example. But in the second example you get rankings under more keywords. Am I right?