Title: Editing Post Thumbnail Size
Last modified: August 19, 2016

---

# Editing Post Thumbnail Size

 *  Resolved [atlantiscanyon](https://wordpress.org/support/users/atlantiscanyon/)
 * (@atlantiscanyon)
 * [15 years ago](https://wordpress.org/support/topic/editing-post-thumbnail-size/)
 * Hi,
    Site: [http://www.somewhereny.com](http://www.somewhereny.com)
 * I am trying to edit my post thumbnail size, from this [article](http://markjaquith.wordpress.com/2009/12/23/new-in-wordpress-2-9-post-thumbnail-images/).
   I changed this in my functions.php :
 *     ```
       // Add Post Thumbnail Theme Support
       if ( function_exists( 'add_theme_support' ) ) {
       	add_theme_support( 'post-thumbnails' );
       	set_post_thumbnail_size( 300, 300 );
       ```
   
 * to my desired size, 300px by 300px, yet it will not change, any ideas? Thanks!

Viewing 7 replies - 1 through 7 (of 7 total)

 *  [Digital Raindrops](https://wordpress.org/support/users/adeptris/)
 * (@adeptris)
 * [15 years ago](https://wordpress.org/support/topic/editing-post-thumbnail-size/#post-2049010)
 * The post thumbnail size will not update retrospective post images, have you uploaded
   a **“New Image”** or used a [thumbnail regeration plugin](http://wordpress.org/extend/plugins/regenerate-thumbnails/)?
 * HTH
 * David
 *  Thread Starter [atlantiscanyon](https://wordpress.org/support/users/atlantiscanyon/)
 * (@atlantiscanyon)
 * [15 years ago](https://wordpress.org/support/topic/editing-post-thumbnail-size/#post-2049031)
 * Hi,
    I deleted my posts and reuploaded the image. Yet, strangely the image on
   the admin-post-editing page is the proper size, but on the homepage it is still
   the same, any ideas? Thanks!!!
 *  [Digital Raindrops](https://wordpress.org/support/users/adeptris/)
 * (@adeptris)
 * [15 years ago](https://wordpress.org/support/topic/editing-post-thumbnail-size/#post-2049057)
 * Deleting the posts does not remove the images, use the Admin Media Library to
   remove the old images, it will show you if they are attached to a post or orphaned.
 * The other consideration is if you have a page cache, and your local internet 
   files.
 * David
 *  Thread Starter [atlantiscanyon](https://wordpress.org/support/users/atlantiscanyon/)
 * (@atlantiscanyon)
 * [15 years ago](https://wordpress.org/support/topic/editing-post-thumbnail-size/#post-2049125)
 * Okay,
    I removed all the images, re-uploaded the original image, and download
   the thumbnail regeneration plug and re sized all images, still no luck.
 * The only way I can get a square image to display is if I insert the image into
   the “excerpt” area below the main text, yet If i have other text/images in the
   post they show up along with the excerpt image on the front page.
 *  [Chip Bennett](https://wordpress.org/support/users/chipbennett/)
 * (@chipbennett)
 * [15 years ago](https://wordpress.org/support/topic/editing-post-thumbnail-size/#post-2049132)
 * What is the exact function call that is outputting the Post Thumbnail into your
   template?
 *  [Digital Raindrops](https://wordpress.org/support/users/adeptris/)
 * (@adeptris)
 * [15 years ago](https://wordpress.org/support/topic/editing-post-thumbnail-size/#post-2049155)
 * Ok it is likely the theme and the excerpt code, without knowing what is in the
   theme loop file it will be hard to help.
 * As default WordPress will create three thumbnails based on the Admin > Settings
   > Media where medium is a 300 x 300 thumbnail and you can [call this and resize](http://codex.wordpress.org/Function_Reference/get_the_post_thumbnail)
   it if you want, as an example.
 * Medium Thumbnail:
 *     ```
       <?php echo get_the_post_thumbnail($post->ID, 'medium'); ?>
       ```
   
 * To resize the Medium Thumbnail:
 *     ```
       <?php echo get_the_post_thumbnail($post->ID, array(150,150) , 'medium'); ?>
       ```
   
 * You would have code on the loop which will call the_excerpt() and you would add
   the call to the image.
 * Take twenty ten as an example loop.php if we wanted the excerpt and image instead
   of the full post
 * Find:
 *     ```
       <div class="entry-content">
       <?php the_content( __( 'Continue reading <span class="meta-nav">→</span>', 'twentyten' ) ); ?>
       ```
   
 * Change to:
 *     ```
       <div class="entry-content">
       <?php echo get_the_post_thumbnail($post->ID, 'medium'); ?>
       <?php the_excerpt(); ?>
       ```
   
 * I know this [works for the thumbnail images](http://digitalraindrops.net/2011/04/footer-recent-post-thumbnails/)
   as I used it in a tutorial today!
 * You are setting the feature image for each post?
 * HTH
 * David
 *  Thread Starter [atlantiscanyon](https://wordpress.org/support/users/atlantiscanyon/)
 * (@atlantiscanyon)
 * [15 years ago](https://wordpress.org/support/topic/editing-post-thumbnail-size/#post-2049229)
 * Hi,
    Thanks guys for all the help. I actually found the problem, which seems 
   to be a little silly. Apperently in my theme f8-light the thumbnail size is defined
   twice, once in the funtions.php and in style.css on line 449:
 *     ```
       .thumbnail {
       	width:300px;
       	height:300px;
       	max-width:300px;
       	max-height:300px;
       	overflow:hidden;
       }
       ```
   

Viewing 7 replies - 1 through 7 (of 7 total)

The topic ‘Editing Post Thumbnail Size’ is closed to new replies.

## Tags

 * [post thumbnail size](https://wordpress.org/support/topic-tag/post-thumbnail-size/)

 * 7 replies
 * 3 participants
 * Last reply from: [atlantiscanyon](https://wordpress.org/support/users/atlantiscanyon/)
 * Last activity: [15 years ago](https://wordpress.org/support/topic/editing-post-thumbnail-size/#post-2049229)
 * Status: resolved

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