You can make use of the img tag to resize a picture using HTML.
Just give the width and height to which you want to reduce your picture to in a browser.
Note that, the original dimensions of the picture won’t change; the picture will only be adjusted and displayed to the dimensions you have specified in the img tag.
<img src=”the URL of the image here” width =”200px” height = “200px” />
So no matter whatever the image size is, it will be shown in the height and width you specify.