Answers for "how to resize image in bootstrap 5"

responsive image in bootstrap

<img src="..." class="img-responsive">

how to stretch image in size using bootstrap

you have to set the width of image to 100%, for that you can use Bootstrap class "w-100". keep in mind that "container-fluid" and "col-12" class sets left and right padding to 15px and "row" class sets left and right margin to "-15px" by default. make sure to set them to 0.