301 Redirect ALL 404 Error Pages in WordPress

Redirecting all 404 (Not Found) errors to your homepage is a common strategy to retain visitors who land on broken links. However, this should be done with caution. While it lowers the bounce rate immediately, Google treats blanket redirects to the homepage as "Soft 404s," which can sometimes hurt SEO if not used strategically (e.g., during a messy site migration). Below are the three most effective methods to implement this.

Method 1: The Plugin Route (Easiest)

If you are not comfortable touching code, the easiest way is to use a dedicated free plugin.

Step 1: Install the Plugin

• Go to your WordPress Dashboard > Plugins > Add New.
• Search for "All 404 Redirect to Homepage".
• Install and Activate the plugin by Fakhri Alsadi (or a similar highly-rated one).

Step 2: Configure Settings

• Go to Settings > All 404 Redirect to Homepage.
• Set the Redirect Status to Enabled.
• In the Redirect URL field, enter your homepage URL (e.g., https://yourwebsite.com).
• Click Update Options.

Result: Any visitor hitting a non-existent URL will now be instantly taken to your home page.

Method 2: The Code Snippet Route (Recommended)

This method is cleaner because it does not require a heavy plugin. You can add this code to your theme's functions.php file or use a code management plugin like WPCode.

The Code:

add_action('template_redirect', 'redirect_all_404s_to_homepage');

function redirect_all_404s_to_homepage() {
if (is_404()) {
wp_redirect(home_url(), 301);
exit();
}
}

How to Add It:

• Go to Appearance > Theme File Editor.
• Select Theme Functions (functions.php).
• Paste the code at the very bottom of the file.
• Click Update File.

Method 3: The .htaccess Route (Advanced)

This is the fastest method as it handles the redirect at the server level before WordPress even loads.

Step 1: Access File Manager
Log in to your hosting cPanel and open File Manager.

Step 2: Edit .htaccess
Locate the .htaccess file in your public_html folder. (Make sure "Show Hidden Files" is enabled).

Step 3: Add the Rule
Add this single line at the very top of the file:

ErrorDocument 404 /

Note: This tells the server to load the homepage content whenever a 404 occurs. For a true 301 redirect behavior via .htaccess, the syntax is more complex and often conflicts with WordPress permalinks, so Method 2 is generally safer for WordPress users.

Critical Warning: The SEO Risk (Soft 404s)

Before you do this, understand that Google hates "Soft 404s."

• A Hard 404 tells Google: "This page is gone, stop indexing it."
• A Redirect to Home tells Google: "This specific article is now the Homepage."

If you redirect a deleted article about "Dog Food" to your "Homepage," Google sees the irrelevance and flags it as a "Soft 404." This can confuse the crawler.

Best Practice: Use these methods only as a temporary fix or if your site has thousands of low-value spam 404s. For important deleted pages, always redirect them individually to a relevant related post.