Trusted WordPress tutorials, when you need them most.
Beginner’s Guide to WordPress
25 Million+
Websites using our plugins
Years of WordPress experience
WordPress tutorials
by experts

How to Limit Comment Length in WordPress (Easy Tutorial)

Editorial Note: We earn a commission from partner links on WPBeginner. Commissions do not affect our editors' opinions or evaluations. Learn more about Editorial Process.

Do you want to limit comment length in WordPress?

WordPress comments encourage discussions around your blog post content. However, you may find that comments that are very brief or overly long are not very helpful.

In this article, we will show you how to easily limit comment length in WordPress.

Limit Comment Length in WordPress

Why Limit Comment Length in WordPress?

An active comment area is a great way to build a community around your WordPress blog. Visitors can give feedback, ask questions, and offer their own points of view on the topic.

However, not all comments are helpful.

We’ve been moderating WordPress comments for well over a decade. In our experience, we’ve found that the most helpful comments are above 60 characters and below 5000 characters in length.

One-word comments are usually not very helpful. In most cases, they are spam comments where the author just wants a backlink from your site.

On the other hand, long comments above 5,000 characters are often rants or complaints. Sometimes, they are not even relevant to the article.

Setting comment length limits in WordPress can improve the overall quality of your comments and discourage spam comments. However, there is no built-in way of doing this in WordPress.

That being said, let’s take a look at how to control comment length in WordPress by setting minimum and maximum limits.

How to Limit Comment Length in WordPress

You can limit comment length in WordPress by adding code to your functions.php file. However, keep in mind that the smallest error while entering the code can break your site and make it inaccessible.

That’s why we recommend always using WPCode to insert code snippets into your WordPress site. It is the best WordPress code snippets plugin on the market that makes it safe and easy to add custom code.

First, you need to install and activate the WPCode plugin. For detailed instructions, see our step-by-step guide on how to install a WordPress plugin.

Note: WPCode also has a free version that you can use for this tutorial. However, upgrading to the paid plan will give you access to more features like a larger code snippets library, conditional logic, and more.

Upon activation, visit the Code Snippets » + Add Snippet page from the WordPress admin sidebar.

Here, click the ‘Use Snippet’ button under the ‘Add Your Custom Code (New Snippet)’ option.

Add new snippet

This will take you to the ‘Create Custom Snippet’ page, where you can start by adding a title for your code snippet. This name won’t be displayed on the website front end and can be anything you like.

Next, choose the ‘PHP Snippet’ option as the Code Type from the dropdown menu in the right corner of the screen.

Choose the PHP Snippet option for comment length limit

Once you have done that, simply copy and paste the following code snippet into the ‘Code Preview’ box:

add_filter( 'preprocess_comment', 'wpb_preprocess_comment' );
function wpb_preprocess_comment($comment) {
    if ( strlen( $comment['comment_content'] ) > 5000 ) {
        wp_die('Comment is too long. Please keep your comment under 5000 characters.');
if ( strlen( $comment['comment_content'] ) < 60 ) {
        wp_die('Comment is too short. Please use at least 60 characters.');
    return $comment;

This code snippet works by adding a filter hook to preprocess_comment. This filter is run before WordPress saves any comments to the database or performs any pre-processing on submitted comments.

It checks the comment length and displays an error message if it is too short or too long. By default, the comment limit is set to a minimum of 60 characters and a maximum of 5,000 characters in this snippet.

However, to set your own comment limit, just replace the number 5,000 in the code with your maximum limit number.

Similarly, you can replace the number 60 in the code to set a different minimum comment limit on your WordPress website.

You can also change the message that will be displayed on your website when a user exceeds or falls short of the comment limit. Simply type the sentence you want to display after the wp_die lines in the code.

Edit comment limit snippet

After that, scroll down to the ‘Insertion’ section and choose the ‘Auto Insert’ mode.

The custom code will be automatically executed on your website upon activation.

Choose an insertion method

If you only want to limit comment length on specific website pages, then you can also do that.

Simply scroll down to the ‘Conditional Logic’ section and toggle the ‘Enable Logic’ switch.

After that, choose the ‘Show’ option from the ‘Conditions’ dropdown menu and click the ‘+ Add new group’ button.

Enable the Conditional Logic toggle

This will open a new tab where you must select the ‘Page URL’ option from the dropdown menu on the left.

Next, type the URL of the page where you want to limit the comment length in the field on the right.

Now, the code snippet will only be activated on the page with the URL you have just entered.

Type the conditional logic

Scroll back to the top of the page and toggle the ‘Inactive’ switch to ‘Active’.

Finally, click the ‘Save Snippet’ button to store your settings.

Save the comment limit snippet

Now, when a user types a comment that falls short of your minimum comment length, this message will be displayed on their screens.

Users won’t be able to post a comment until it is at least the minimum length you chose.

An Error Message Is Displayed if a Comment is Too Short or Too Long

Similarly, when a user types a comment that exceeds your maximum limit, this message will be show on their screens.

This will help reduce rants and spam comments on your website.

Message preview for a long comment

Bonus: Improve Comment Engagement on Your WordPress Site

Controlling comment length is just one way to increase engagement in your WordPress comments section. This is great for keeping visitors on your site for longer and can even benefit your site’s SEO when users’ comments contain relevant keywords and add context to your content.

You can also easily further improve the comments section on your website using Thrive Comments.

The Thrive Comments WordPress plugin

It is the best WordPress comments plugin that comes with a dedicated moderation board, lets you lazy load comments, allows users to leave comments with their social media profiles, and more.

Plus, the tool enables you to add an upvote/downvote functionality to reduce spam and encourage interesting comments on your website.

Thrive Comments even lets you feature encouraging comments at the top and bury offensive or irrelevant comments at the bottom of the discussion section.

Feature comment from dropdown menu

This allows you to reward users who are adding the most value to the discussion while politely discouraging other users from leaving unhelpful comments.

For detailed instructions, you may want to see our tutorial on how to feature or bury comments in WordPress.

We hope this tutorial helped you learn how to limit comment length in WordPress. You may also want to learn how to increase your blog traffic or check out our list of the best WordPress plugins to grow your site.

If you liked this article, then please subscribe to our YouTube Channel for WordPress video tutorials. You can also find us on Twitter and Facebook.

Disclosure: Our content is reader-supported. This means if you click on some of our links, then we may earn a commission. See how WPBeginner is funded, why it matters, and how you can support us. Here's our editorial process.

Editorial Staff

Editorial Staff at WPBeginner is a team of WordPress experts led by Syed Balkhi with over 16 years of experience in WordPress, Web Hosting, eCommerce, SEO, and Marketing. Started in 2009, WPBeginner is now the largest free WordPress resource site in the industry and is often referred to as the Wikipedia for WordPress.

The Ultimate WordPress Toolkit

Get FREE access to our toolkit - a collection of WordPress related products and resources that every professional should have!

Reader Interactions

20 CommentsLeave a Reply

  1. Syed Balkhi says

    Hey WPBeginner readers,
    Did you know you can win exciting prizes by commenting on WPBeginner?
    Every month, our top blog commenters will win HUGE rewards, including premium WordPress plugin licenses and cash prizes.
    You can get more details about the contest from here.
    Start sharing your thoughts below to stand a chance to win!

  2. Harsh Lahre says

    Thank you for this code, I was tired deleting comments, each one is more than 20 thousand characters. This helps me a lot.

  3. connie mergel says

    The control comment length plugin is no longer available> Do you have any suggestions about another plugin that will do the same thing.


    • WPBeginner Support says

      While we don’t have a recommendation at the moment, we will be sure to update this article when we find a plugin we would recommend.


  4. Efe Obasuyi says

    For your information, the “Control Comment Length” is no longer on WordPress directory. Thanks

    • WPBeginner Support says

      Thank you for letting us know, we’ll be sure to keep an eye out for an alternative plugin :)


  5. ghost says

    first thanks for your code
    and how can i stay in my page and open a popup message showing the message error ?


  6. Charlie Lynburg says

    I am thrilled to have found this! It’s life-changing in a site like mine!

    Can you give me a code to add that EXEMPTS this limit for myself (admins)? Thanks

  7. Bharat Sharma says


    The plugin is no longer in WordPress directory, but the code works very well. However, I want to know is there a way we can “gray out” or “disable” the submit button if the comment length conditions are not met. Right now, what this code do is it allow the user to submit comment and they get an error message if their comment length is not as per code criteria. By greying out the button we will be able to stop users from getting irritated and their will be no need to hit the back button.

  8. stanley says

    hi where can i download the wordpress application?
    can you give the link?or send it thru my gmail? thanks

    • paunkumar says

      add_filter( ‘preprocess_comment’, ‘wpb_preprocess_comment’ );

      function wpb_preprocess_comment($comment) {
      if ( strlen( $comment[‘comment_content’] ) > 5000 ) {
      wp_die(‘Comment is too long. Please keep your comment under 5000 characters.’);
      if ( strlen( $comment[‘comment_content’] ) < 60 ) {
      wp_die('Comment is too short. Please use at least 60 characters.');
      return $comment;

  9. Tom says

    Is there any way to limit comments, and if the limit is exceeded a new page will be created and the rest of the comment is on a new page?

Leave A Reply

Thanks for choosing to leave a comment. Please keep in mind that all comments are moderated according to our comment policy, and your email address will NOT be published. Please Do NOT use keywords in the name field. Let's have a personal and meaningful conversation.