When it comes to placing an image title, the placement depends on what type of image it is and which version of HTML you are using. Generally speaking, if the image is inline with the other text, then the title should be placed below it. Whereas if the image is a separate block-element, or is being used to convey some information or create a link, then the title should be placed above the image.
Using HTML5 and media queries, the title can also be placed to the side of the image, particularly if it has a descriptive purpose. The idea is that the title should complement the image, not overtake it. This styling would depend on how you want the image to look on different devices and browsers, as some may present the title differently.
Ultimately, the placement of an image title should be decided by what works best for the content. If there's an associated caption, then the title could go below, whereas if the title is providing specific information, it could be placed above. Whichever placement is chosen, the title should be clearly visible and be appropriate to the content.