Replace full post by excerpts on homepage without editing your theme files
What you have to do is to paste this code into your functions.php file and let WordPress filters do the work for you.
function my_excerpts($content = false) {
// If is the home page, an archive, or search results
if(is_front_page() || is_archive() || is_search()) :
global $post;
$content = $post->post_excerpt;
// If an excerpt is set in the Optional Excerpt box
if($content) :
$content = apply_filters('the_excerpt', $content);
// If no excerpt is set
else :
$content = $post->post_content;
$excerpt_length = 55;
$words = explode(' ', $content, $excerpt_length + 1);
if(count($words) > $excerpt_length) :
array_pop($words);
array_push($words, '...');
$content = implode(' ', $words);
endif;
$content = '<p>' . $content . '</p>';
endif;
endif;
// Make sure to return the content
return $content;
}
add_filter('the_content', 'my_excerpts');