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When I click on a post it opens up and it is displaying the featured image at the top of the post. The featured image is being displayed as a width of 1024 x 768. This is taking up the whole screen and I want to make this image a lot smaller.

The content is being display by the the_content() function which I've read calls the_post_thumbnail but how can I set this so that Wordpress displays the Medium image instead of the full size image everytime?

  • Are those the original image dimensions? Can you link to the site? – shahar Mar 18 '15 at 23:23
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In you WordPress Admin, Go to Settings > Media, here you can set the default size of 'thumbnail','medium' and 'large'.

If you read through the codex page of the_post_thumbnail() you would have found that it has parameters that can be used to fetch a precised size of the image.

the_post_thumbnail();                  // without parameter -> 'post-thumbnail'

the_post_thumbnail( 'thumbnail' );       // Thumbnail (default 150px x 150px max)
the_post_thumbnail( 'medium' );          // Medium resolution (default 300px x 300px max)
the_post_thumbnail( 'large' );           // Large resolution (default 640px x 640px max)
the_post_thumbnail( 'full' );            // Full resolution (original size uploaded)

the_post_thumbnail( array(100, 100) );  // Other resolutions

So, you can try the_post_thumbnail( array(100, 100) );

  • I understand the codex but my issue is that it's being called from the_content function and I don't have access to it as it's being called since it's in that function. – user1048676 Mar 18 '15 at 18:10
  • have you tried changing the size in WordPress admin? – M-R Mar 18 '15 at 18:17
  • Yes I did and it didn't change – user1048676 Mar 18 '15 at 18:49
  • the_content do not internally call the_post_thumbnail unless there is a hook added by theme or some plugin. the_content only outputs the content of the post. Some possibilities are 1) featured image is embedded in post content as well (you can verify by editing the post) 2) theme template is displaying full image before the_content() is called, its probably happening in one of the theme file. 3) some plugin/theme function is using the_content filter hook to add full image before the post content. – M-R Mar 19 '15 at 8:38

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