Post Excerpts Plugin on WordPress
Excerpts in WordPress are snippets or previews of blog posts or articles. One can either manually specify a post's excerpt in the post editing screen, or rely on the automatically generated excerpt. When relying on the auto generated excerpt, site administrators have little control over the excerpt by default, due to limitations in the WordPress system. Fortunately, you can use an excerpt plugin to customize the post snippet.
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Why Use a Plugin?
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The default WordPress excerpt limit (55 characters) is hard programmed into the WordPress core system. While it is possible to edit the number of characters by modifying the "WP-Config" file, it's not recommended to make changes to the WordPress core. One reason is a simple mistake could crash your entire site. The other major reason is you'd have to make the changes to the core after each WordPress update. For this reason, excerpt plugins are an excellent option.
Advanced Excerpt
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Advanced Excerpt has been downloaded more than 80,000 times as of September 2011. The plugin features an easy to use interface that lets you choose the excerpt length, as well as choose whether or not to process HTML tags. You can choose to trim the excerpt either by word count or character count in the Settings menu.
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DP Excerpt
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DP Excerpt lets you choose whether or not to display HTML markup, and even whether or not to display shortcode content. Excerpt length is chosen by either word or character count, and the plugin supports the use of an automatic "Read More" button. Users of DP Excerpt can also customize the excerpt trailer (the default trail is [...]) with custom characters.
Better Excerpt
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Better Excerpt automatically wraps the generated excerpt in DIV tags, which allow you to enable HTML and shortcode markup. Because the excerpts are nested in DIV tags, you can easily edit the excerpt's style in your style sheet using CSS. The Better Excerpt plugin lets you set the length by the word or character count, and supports custom trails like other plugins.
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