html img tag allow you to put an image inside html code.
<img src="http://clipart-library.com/image_gallery2/Home-Free-Download-PNG.png">
Attributes:
alt – Allow you to declare keywords inside image for “SEO”.
<img src="http://clipart-library.com/image_gallery2/Home-Free-Download-PNG.png" alt ="image">
height and width – Allow you to declare width and height to your image.
<img src="http://clipart-library.com/image_gallery2/Home-Free-Download-PNG.png" width ="500px" height = "550px">
More info about “html img” here –https://www.w3schools.com/tags/tag_img.asp
More html tutorial – http://omzas.com/html/