Does Google really view all your redirects the way you think it does?

What is a soft 404 and why is Google wary of it?

A soft 404 occurs when a non-existent URL returns a HTTP 200 (success) code or a redirect instead of a true 404. The server claims everything is fine while the page does not actually exist.

Google sees this practice as an attempt to mask structural issues of the site. Instead of honestly signaling that a resource no longer exists, you redirect to a generic page or the homepage, creating a poor user experience.

How does Google differentiate a legitimate redirect from a soft 404?

The relevance of the target content is the main criterion for evaluation. If you redirect /red-shoes-size-42 to a page that indeed lists red shoes in size 42, the redirect is legitimate.

Conversely, if that same URL points to your homepage or an overly broad category page with no direct relation, Google may interpret this redirect as a soft 404. The algorithm analyzes the semantic consistency between the original URL and the destination.

Why does this distinction affect your SEO?

Soft 404s waste your precious crawl budget. Googlebot spends time following redirects to irrelevant content, reducing the number of truly useful pages it can crawl within the allotted time.

They also indicate a poor management of your architecture. A site with hundreds of redirects to the homepage suggests a lack of maintenance or an attempt to hide massive structural errors.

• HTTP code alone is insufficient: a 301 or 302 is not automatically validated by Google if the destination is not relevant
• Semiotic relevance is mandatory: the source and target URLs must share a coherent thematic context
• Crawl budget impact: soft 404s divert crawling resources to pages with no real value
• Negative quality signal: an accumulation of soft 404s degrades Google’s overall perception of your site
• Poor user experience: visitors following an outdated link land on content unrelated to their initial search

Does this rule align with field observations?

Absolutely. For years, we have observed that Google ignores certain redirects to the homepage in Search Console, marking them as 404 errors despite the correct 301 code. This statement officially confirms that behavior.

However, the boundary between relevant and irrelevant remains blurry. Google does not publish any threshold for semantic similarity. An SEO must therefore make interpretive choices without a guarantee of validation. [To verify]: how exactly does Google measure this relevance? Does it analyze title tags, textual content, or related search intents?

In what situations does this logic pose problems?

E-commerce sites with a seasonal catalog are particularly exposed. You sell winter coats only from September to March. What to do with off-season product URLs? Redirecting them to the "coats" category seems legitimate, but Google might see it as a soft 404 if the exact product no longer exists.

News sites face the same dilemma. An article about a dated event redirected to the thematic section may be considered irrelevant by Google even though it provides useful context to readers seeking related information.

What strategy should you adopt in the face of this ambiguity?

Transparency remains the best approach. If a page no longer exists without a direct equivalent, a well-crafted true 404 (with relevant suggestions) is better than a forced redirect. Google respects this honesty and does not penalize it.

For borderline cases, prioritize redirects to truly close content rather than to generic pages. A product-to-similar-product redirect will always be better accepted than a redirect to a broad category. If you cannot find a relevant destination, own the 404.

How to audit your existing redirects?

Start by extracting all your redirects from your server (htaccess file, nginx.conf, or your CMS). Cross-reference this list with the 404 errors reported in Search Console: if Google reports 404s on URLs you thought you had redirected, you likely have soft 404s.

Next, analyze the semantic relevance of each redirect. For each source/destination pair, ask yourself: "Is a user looking for the content of the source URL finding a satisfactory answer on the destination?" If the answer is no or hesitant, it's a potential soft 404.

What mistakes should you absolutely avoid?

Never massively redirect to your homepage by default. This is the classic mistake during a redesign: all old URLs point to the homepage "while waiting to do better." Google detects this pattern immediately and can ignore the entire set of redirects.

Avoid also redirect chains that ultimately lead to generic content. If A redirects to B which redirects to C (broad page), Google may consider the entire chain a soft 404, even if each individual link seems correct.

What management policy should you adopt for the future?

Establish a strict minimum relevance rule: every redirect must point to content covering at least 70% of the subject of the source URL. If you cannot find a satisfying destination that meets this criterion, opt for a 410 (Gone) or a 404 with an enriched error page.

For sites with a high turnover of pages, create thematic replacement pages instead of redirecting to overly broad categories. For example, a page "Products similar to [removed product]" with real added value will be accepted by Google.

• Extract all active redirects on your site and document their relevance
• Check in Search Console for URLs flagged as 404 despite your redirects
• Replace homepage redirects with well-designed 404s or relevant destinations
• Eliminate redirect chains longer than 2 hops
• Create thematic replacement pages for obsolete content without a direct equivalent
• Document the logic of each redirect to facilitate future audits