Expert Technical SEO Services for Site Health & Performance Optimization

The Problem Nobody Talks About: Soft 404 Errors

Let’s set a scene. You’ve been watching your Google Search Console like a hawk. Crawl errors pop up, you fix them, life goes on. But then you notice something odd: a page that should be serving a proper 404 status code is being reported as “soft 404.” Google says it’s a 404, but your server is returning a 200 OK. The page shows a “Page Not Found” message, but the status code tells a different story. That’s the hallmark of a soft 404 error.

For a site that relies on clean technical SEO, this is a subtle but dangerous signal. It tells search engines that your site might be serving thin or low-quality content, or worse, that you’re trying to trick them. And while you might not see an immediate drop in rankings, over time, this can erode your crawl budget and dilute your site’s authority.

What Exactly Is a Soft 404 Error?

A soft 404 occurs when a URL returns a 200 (OK) status code but the content of the page is essentially a “not found” message. Think of it as a ghost page: the server says everything is fine, but the user (and Googlebot) sees a dead end. This is different from a hard 404, where the server explicitly returns a 404 status code.

The core issue here is inconsistency. Search engines rely on status codes to understand the health of your site. When you return a 200 for a missing page, you’re telling Google that this URL is valid and should be indexed. But when Googlebot crawls it and finds nothing useful, it flags it as a soft 404.

Common Causes of Soft 404 Errors

Soft 404 errors often stem from misconfigured web servers, CMS quirks, or poor handling of deleted content. Here are the most frequent culprits:

• Custom 404 pages that return a 200 status code. Many CMS themes or custom templates display a friendly “Oops, page not found” message but forget to set the HTTP response code to 404.
• Redirect loops or incorrect redirects. A page that redirects to another missing page can confuse crawlers.
• Thin or empty pages. If a page has almost no content—like a product page after inventory is removed but the URL remains active—Google may treat it as a soft 404.
• JavaScript-based routing. Single-page applications (SPAs) often handle routing on the client side. If the JavaScript fails to load or the route doesn’t exist, the server might still return a 200.
• URL parameters that generate empty results. For example, a filter on an e-commerce site that leads to zero products can create a soft 404.

Step-by-Step Troubleshooting Guide

Step 1: Identify Soft 404 Errors in Google Search Console

Start by logging into your Google Search Console and navigating to the Coverage report. Look for the “Submitted URL seems to be a soft 404” or “Soft 404” categories. This will give you a list of affected URLs.

Step 2: Verify the HTTP Status Code

Use a tool like `curl`, browser developer tools, or a dedicated HTTP header checker to verify the status code for each flagged URL. Run:

``` curl -I https://yourdomain.com/missing-page ```

If the response shows `HTTP/2 200` but the page content says “Page not found,” you have a soft 404.

Step 3: Check Your Custom 404 Page Configuration

If your site uses a custom 404 page, ensure it’s configured to return a 404 status code. In most CMS platforms, this is a server-level setting. For example, on Apache, you’d use:

``` ErrorDocument 404 /404.html ```

And make sure the 404 page itself isn’t returning a 200. Some CMS themes hardcode the status code incorrectly.

Step 4: Examine Server-Side Logic

If you’re using a dynamic site (e.g., WordPress, Django, Node.js), check the server-side code that handles missing routes. In WordPress, this is often handled by the theme’s `404.php` file. Ensure that the file includes:

```php <?php header("HTTP/1.1 404 Not Found"); ?> ```

For custom frameworks, ensure your routing logic explicitly sets the status code when a resource isn’t found.

Step 5: Handle JavaScript Routing Properly

For SPAs, implement server-side rendering or pre-rendering for missing routes. Alternatively, configure your web server to return a 404 for unknown paths before the JavaScript app loads. On Nginx, you might use:

``` location / { try_files $uri $uri/ /index.html; if (!-e $request_filename) { return 404; } } ```

Step 6: Redirect or Remove Thin Content

If a page has very little content (like an empty search results page or a product page with no description), consider either:

• Adding meaningful content or a clear redirect to a relevant category.
• Removing the page entirely and returning a hard 404.

Step 7: Monitor and Re-Crawl

After making changes, use the URL Inspection tool in Google Search Console to request a re-crawl. You can also submit an updated XML sitemap. Over the next few days, check the Coverage report to see if the soft 404 errors decrease.

When to Call in a Professional

Some soft 404 issues are straightforward, but others require deep technical expertise. Consider engaging an expert technical SEO agency if:

• Your site is a large e-commerce platform with thousands of dynamically generated URLs.
• You’re dealing with complex JavaScript frameworks that handle routing on the client side.
• The soft 404 errors are part of a broader pattern of crawl budget mismanagement.
• You’ve tried the steps above but errors persist, indicating a deeper server or code issue.

A professional can perform a full technical SEO audit, identify root causes, and implement server-level fixes that go beyond basic CMS tweaks.

Related Issues to Watch For

Soft 404 errors often overlap with other technical SEO problems. If you’re seeing them, it’s worth checking these related areas:

• Crawl Errors Fix: Soft 404s are often grouped with other crawl errors, like 404s and 500s. A holistic approach can save you time.
• Server Response Codes: Understanding how different status codes affect crawlability is crucial for diagnosing soft 404s.
• Search Console Coverage Report: This report is your best friend for monitoring index coverage and spotting soft 404s early.
• Noindex Tag Mistakes: Sometimes a soft 404 is confused with a page that has a noindex tag. Make sure you’re not conflating the two.
• Duplicate Content Issues: Thin or empty pages can also trigger duplicate content flags, especially if they’re canonicalized incorrectly.

Soft 404 errors are a classic example of a small technical glitch that can have outsized consequences. They waste crawl budget, confuse search engines, and can slowly erode your site’s performance. The good news? With a methodical approach—checking status codes, fixing server configurations, and cleaning up thin content—you can resolve them.

But if your site is complex or the errors persist, don’t hesitate to bring in experts. A thorough technical SEO audit can uncover not just soft 404s but the underlying issues that cause them. Whether you tackle it yourself or seek help, the key is to treat soft 404s as a signal, not just a nuisance. They’re telling you something about your site’s structure. Listen to them.