302 vs 301 Redirects: When to Use Each (With Real Examples)

The 302 vs 301 redirect debate is as old as SEO itself. This definitive guide cuts through the noise to show you which to use, when, and why it matters.

The Redirect Dilemma: Why Getting This Wrong Is So Expensive

The 302 vs 301 redirect debate is a classic for a reason. It’s a fundamental piece of technical SEO that has massive implications for crawling, indexing, and the flow of authority across your site. Get it wrong, and you’re essentially telling search engines to ignore your new pages, bleeding link equity and confusing both users and bots.

A redirect is not just a redirect. It’s a specific instruction. Using a 302 (Temporary) when you mean 301 (Permanent) is like putting a ‘Back in 5 minutes’ sign on a business that has moved across the country. Eventually, people stop checking.

In this guide, we’ll dissect the technical differences, the SEO impact, and the practical applications of each. We’ll also cover how to find every last redirect on your site using ScreamingCAT, because you can’t fix what you can’t find.

What is a 301 Redirect? The ‘Moved Permanently’ Signal

A 301 redirect sends the HTTP status code `301 Moved Permanently`. The name says it all. This is an unambiguous, permanent directive that the resource you’re looking for has a new, definitive home. It’s not coming back to the old address.

From an SEO perspective, this is the redirect you’ll use 95% of the time. When a search engine crawler like Googlebot encounters a 301, it understands that the new URL has replaced the old one. Consequently, it begins the process of consolidating signals.

This consolidation is crucial. It means the link equity, PageRank, and other ranking signals that the original URL has accumulated are passed to the new URL. While the exact percentage passed is a topic of endless debate, Google has confirmed it’s the best way to preserve your ranking power during a URL change. The old URL is eventually de-indexed in favor of the new one.

• Site Migrations: Moving from one domain to another.
• HTTPS Implementation: Redirecting all HTTP traffic to HTTPS.
• URL Structure Changes: Changing your permalink structure, like moving from `/blog/post-name` to `/articles/post-name`.
• Canonicalization: Consolidating `www` vs. `non-www` versions or trailing slash vs. non-trailing slash URLs.
• Merging Content: Combining two or three weaker articles into one definitive piece and redirecting the old URLs to the new one.

What is a 302 Redirect? The Temporary Detour

A 302 redirect sends the status code `302 Found`. It’s a temporary signal. It tells clients and crawlers, ‘The resource you want is over here for now, but you should keep checking the original address because this is just a temporary arrangement.’

Because it’s temporary, search engines treat it differently. They will typically keep the original URL indexed and will not pass link equity or other ranking signals to the destination URL. Why would they? You’ve explicitly told them the move isn’t permanent.

There’s a common misconception here involving the 307 `Temporary Redirect` status. While 307 is a more semantically correct temporary redirect (it preserves the HTTP request method), 302 is widely used and understood by browsers and bots for the same purpose. For most SEOs, the distinction is academic; the intent is temporary.

Use cases for a 302 are much more specific and less common than for a 301:

Geo-targeting: Redirecting users to a country-specific version of a page (e.g., redirecting visitors from Canada from `example.com` to `example.com/ca`).

A/B Testing: Temporarily sending a portion of your traffic to a variant page to test a new design or functionality.

Device Targeting: Sending mobile users from a desktop URL to its mobile-specific equivalent (though responsive design is a better solution).

Promotions: Redirecting a generic URL like `example.com/sale` to a specific seasonal page like `example.com/black-friday-2024` for a limited time.

The SEO Showdown: A Direct 302 vs 301 Redirect Comparison

Let’s cut to the chase. The primary difference in the 302 vs 301 redirect battle comes down to signal consolidation. One is built for it, the other is not. This has direct consequences for your SEO performance.

Some will argue, ‘Google is smart; it’ll figure out a long-standing 302 is probably permanent.’ And they might be right. John Mueller has said that after some time, they may treat a 302 as a 301. But why would you leave your site’s authority to chance and a search engine’s interpretation? Use the right tool for the job. It’s not laziness; it’s precision.

Factor	301 (Permanent)	302 (Temporary)
<strong>Link Equity</strong>	Consolidates signals and passes link equity to the new URL.	Does not pass link equity. The original URL retains its authority.
<strong>Indexing</strong>	Tells search engines to de-index the old URL and index the new one.	Tells search engines to keep the original URL in the index.
<strong>Browser Caching</strong>	Often cached aggressively by browsers. Once a user's browser learns the 301, it may not re-request the original URL.	Not typically cached, or is cached for a very short duration. Browsers will re-check the original URL on subsequent visits.
<strong>Use Case</strong>	Permanent URL changes: migrations, HTTPS, URL restructuring.	Temporary changes: A/B testing, geo-targeting, short-term promotions.

How to Implement Redirects (And Not Mess It Up)

Knowing the theory is one thing; implementing it correctly is another. The most common places to set up redirects are in your server configuration files, typically `.htaccess` for Apache servers and `nginx.conf` for Nginx servers. The syntax is straightforward, but a single typo can bring your whole site down, so proceed with caution.

Here are basic examples for redirecting a single page. For more complex scenarios, like site-wide rules or preserving URL paths with regex, consult your server documentation or a developer who owes you a favor.

# .htaccess (for Apache Servers)

# Single Page 301 Redirect
Redirect 301 /old-page.html /new-page.html

# Single Page 302 Redirect
Redirect 302 /temporary-page.html /promo-page.html


# nginx.conf (for Nginx Servers)

server {
    # ... your other server config ...

    # Single Page 301 Redirect
    location = /old-page.html {
        return 301 /new-page.html;
    }

    # Single Page 302 Redirect
    location = /temporary-page.html {
        return 302 /promo-page.html;
    }

    # ... rest of your config ...
}

Finding and Fixing Redirect Issues with ScreamingCAT

The biggest redirect mistakes aren’t just about choosing the wrong type. They’re about the ones you don’t even know exist. Legacy redirects, broken redirects, and painful redirect chains can kill your crawl budget and degrade user experience.

This is where a crawler is non-negotiable. With ScreamingCAT, you can get a complete picture of your site’s redirect landscape in minutes. It’s brutally efficient.

First, run a crawl on your domain. Once it’s complete, navigate to the ‘Response Codes’ tab in the main window. Use the filter dropdown and select ‘Redirection (3xx)’. Instantly, you have a list of every single URL that returns a redirect status code.

From here, you can analyze the ‘Status Code’ column to see if they are 301s, 302s, or something else. You can check the ‘Redirect URI’ column to see where they are pointing. This is the fastest way to spot a developer’s accidental use of 302s during a site migration.

For more complex issues, check the ‘Reports’ menu. ScreamingCAT has dedicated reports for ‘Redirect Chains’ and ‘Redirect Loops’. Exporting these gives you a precise to-do list for cleanup. If users are reporting an ERR_TOO_MANY_REDIRECTS error, this is your first stop. Audit regularly, especially after any major site changes. Trust, but verify.

The choice between a 301 and a 302 is a signal of intent. Be clear and deliberate with your instructions to search engines, and they will reward you with predictable behavior.

The ScreamingCAT Team