Hi,
There two possible solutions to set image size in WordPress featured images in post.
Solution 1) The options available in wp-admin to set the size of a featured image from the available options of Thumbnail, Medium, Large.
Follow below guidelines for the first option
— Go To Dashboard => Posts => All and then Posts => Add New/Edit Posts.
— In right side bottom “set featured image” link, click on it
— click on “select files” button,upload featured image from your computer
Instead of clicking the button and then uploading a new image, you will able to drag and drop the image directly to the spot.
— select feature image after that click on “edit image” link provide Thumbnail setting for modify various image sizes
=> The original size/All image sizes
=> Thumbnail
=> All sizes except thumbnail
1)The original size/All image sizes:
once you upload image wordpress store original image size without modifications
2)Thumbnail size image width and height
width: 150px
height: 150px
3)All sizes except thumbnail returns the medium and large size of image
Medium size
max-width= 300px
max-height=300px
Large size:
max-width= 1024px
max-height=1024px
you can change height width of thumbnail image ,by Setting => Media Setting => Image Size
Solution 2) To change the image size using CSS follow below guidelines
Overwrite post’s feature image styling with below css in your custom stylesheet of a child theme,
// feature image parent class
.single-featured-image-header {
display: inline-block;
width:100%;
}
//css of feature image
.single-featured-image-header img {
height: auto;
max-width: [width];
width: 100%;
float: left;("//for alignment of image use float property")
}
//for center alignment of feature image
.single-featured-image-header img {
height: auto;
width: 100%;
max-width: [width];
margin-right: auto;
margin-left: auto;
display: block;
}
—
To change the font-size of a post’s title use font-size
css property