How to prevent resized featured images?

Question

The theme has set thumbnail sizes for featured images:

    add_theme_support( 'post-thumbnails' );
add_image_size( 'hitmag-landscape', 1120, 450, true );
add_image_size( 'hitmag-featured', 735, 400, true );
add_image_size( 'hitmag-grid', 348, 215, true );
add_image_size( 'hitmag-list', 290, 220, true );
add_image_size( 'hitmag-thumbnail', 135, 93, true );

How do I set the "featured" image one so that the image size is just whatever image I upload (for height - I want to be able to set width to 735 still)

Answer 1

Featured image sizes are mostly likely controlled by your theme, so I would look there. Maybe there is a theme setting for it.

You can also check the following setting to see if it us using one of those sizes.

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You can change the featured image size by adding this code into your functions.php file. More info on set_post_thumbnail_size.

set_post_thumbnail_size( 500, 500 );

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You can also add a new image size and then use it in your template by doing something like this...

add_image_size( 'featured-image-size', 800, 9999 ); // Add to functions.php
php the_post_thumbnail( 'featured-image-size' ); // Template usage

More info on add_image_size & the_post_thumbnail

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Edit: Since you updated your question, here is an updated answer.

You can set the height to be unlimited like this...

add_image_size( 'hitmag-featured', 735, 9999 );