Featured Image on wordpress - get default image rather than 500x500

Question

My site was showing thumbnails at 16:9 ratio. Old posts are still showing at 16:9. Old posts are using the default image that is xyz.jpg but now whenever I create a new post and set an image as Featured image it is showing square image instead of 16:9 aspect. it brings a image of size 500x500 and the name of the file will be xyz-500x500.jpg is there a way I can make featured image shown is xyz.jpg rather than xyz-500x500.jpg?

My site is http://cookingshooking.in

Just background: I ported my site from different theme to Lobster three days back, I used plugin called Media tools to set featured for all the previous posts. It assigned all the first image of the post as featured image. I am not sure does this plugin has to do with setting the size of the thumbnail.

Please help all I need is featured/thumbanil image on front page should take default image which I upload that is xyz.jpg rather than xyz-500x500.jpg I do not want to hard code the size for thumbnail.

Answer 1

i have not installed the lobster theme anywhere, but a quick search shows that there are only two locations where lobster is getting the_post_thumbnail.

once in content.php and once in content-image.php

you can add a custom image size in functions.php, then use this imagesize instead of large in line 17 of content-image.php

the_post_thumbnail( 'your-image-size-name', array( 'class' => 'alignnone img-polaroid' ) );

Alternatively you can change the pixel sizes of the "large" size in the wordpress settings->media admin page, or use "medium" if you need large somewhere else and set the medium size in the settings->media area.