Which HTTP Status Codes Matter for SEO, and How Do I Check Mine?

Why should I care about HTTP status codes for SEO?

You should care because status codes are how your server tells Google what each page is. A wrong code can hide a good page or keep a dead one alive in search. Google Search Central documents exactly how it treats each code, so getting them right is basic, high-leverage SEO work.

Most site owners never think about status codes until traffic drops. Then they find a key page quietly returning the wrong signal for months. I have seen a redirect set as temporary when it should have been permanent, and a whole page's ranking history leak away because of it.

You do not need to be an engineer to get this right. You need to know a handful of codes, what each one tells a search engine, and how to check yours. That is the whole job, and it takes an afternoon to learn once.

What is an HTTP status code?

An HTTP status code is a three-digit number your server sends with every page, telling the browser or crawler what happened. 200 means the page loaded fine. 404 means it is missing. 301 means it moved. The codes are grouped into five ranges, and each range has a clear meaning.

The five groups are easy to remember. Codes in the 100s are informational, the 200s mean success, the 300s mean redirection, the 400s mean the request had a problem, and the 500s mean the server had a problem. For SEO, the 200s, 300s, 400s, and 500s are the ones that matter.

These numbers are not a Google invention. They come from the core web standard for HTTP, now written up as RFC 9110. Google, Bing, and every browser read the same codes. That shared language is what lets a crawler understand a site it has never seen before.

Which status codes matter most for SEO?

The codes that move the needle are 200, 301, 302, 404, 410, and the 500 range. A 200 says 'index me,' a 301 says 'I moved for good,' a 302 says 'I moved for now,' a 404 or 410 says 'I am gone,' and a 500 says 'something broke.' Each one shapes how Google crawls and indexes you.

You can ignore most of the rest for daily SEO. A 304 'not modified' helps speed but does not change rankings. A 429 'too many requests' only shows up when your server is throttling crawlers. The short list above covers almost every real decision you will make.

The trap is that a page can return the wrong code and still look fine to a human. Your eyes see a normal page. Googlebot sees a 302 or a soft 404 and treats it in a way you never intended. That gap between what you see and what the server says is where SEO problems hide.

What does a 301 redirect do for my rankings?

A 301 tells Google a page has moved permanently and the new URL should take its place. Google Search Central calls a 301 a strong signal that the new location is the one to index. In plain terms, it passes the old page's ranking history to the new page, which a temporary redirect does not do reliably.

This is why the 301 versus 302 choice is not a small detail. A 302 means 'temporary,' so Google may keep the old URL as the main one and hold your new page back. If you moved a page for good and used a 302 by mistake, you can leave rankings stranded on a URL you no longer use.

When I restructure a site or change a slug, I map every old URL to its best new home with a 301. Webflow makes this simple in the site settings, and I walk through the exact steps in my guide to setting up 301 redirects in Webflow. The rule is simple: permanent move, permanent redirect.

What is the difference between a 404 and a 410?

Both tell search engines a page is not there, but they carry different tones. A 404 means 'not found,' which could be temporary. A 410 means 'gone,' a deliberate 'this is never coming back.' Google treats them almost the same, though a 410 can signal removal a little more clearly.

For most missing pages, a 404 is the correct and safe answer. Google will keep crawling a 404 for a while in case the page returns, then slowly reduce how often it checks. That is normal and healthy. You do not need to redirect every dead page somewhere else.

I reach for a 410 only when I want to make a clean, permanent removal, like a discontinued product or a page I never want back in the index. Google Search Central says it keeps crawling both codes for a time, so neither one vanishes instantly. The difference is intent, and 410 states it plainly.

What is a soft 404, and why is it a problem?

A soft 404 is a page that looks missing but returns a 200 'success' code anyway. Think of an empty results page or a 'product not available' screen that still says 200. Google Search Central flags these as soft 404s and leaves them out of the index because the content does not match the code.

These are sneaky because nothing looks broken. The page loads, the code says success, and only Google Search Console tells you something is wrong. I check the Search Console coverage report for soft 404s on every audit, because they often point to thin pages or broken templates the owner never noticed.

The fix depends on the cause. If the page really is empty or gone, return a real 404 or 410 so the signal matches reality. If the page should have content, add the content or fix the template. The goal is honesty: the code and the page should tell the same story.

How do 5xx server errors hurt my site?

A 5xx code means your server failed to answer, and Google reads it as a sign your site is unstable. Google Search Central says 5xx errors slow down crawling, and if they persist, pages can drop out of the index. A brief blip is fine, but a pattern of 500 or 503 errors is a real risk.

There is one good use for a 5xx code. When you take a site down on purpose for maintenance, a 503 'service unavailable' is the polite way to tell crawlers 'come back later' without losing rankings. It is a temporary 'not now,' not a permanent 'gone.'

Outside of planned maintenance, repeated server errors are an emergency. They mean visitors hit dead ends and Google starts to lose trust in your site's stability. On managed hosting like Webflow's, these are rare, but custom code, heavy embeds, or a struggling third-party service can still trigger them.

How do I check the status codes on my own site?

The fastest way is to open your browser's developer tools, go to the Network tab, and reload the page. Each request shows its status code. For a whole-site view, a crawler like Screaming Frog or a tool like Ahrefs lists every URL and its code so you can spot the wrong ones in bulk.

Google Search Console is your other must-have. Its Pages report groups your URLs by how Google sees them, including 'not found' and 'soft 404' buckets pulled straight from real crawls. That is Google telling you, in its own words, which codes it is finding on your pages.

For a quick single check, the command line tool curl with the head flag returns just the status code for any URL. I keep a short list of my key pages, my homepage, top service pages, and best articles, and I confirm they all return a clean 200. If any surprise me, that is where I dig in first.

Does Webflow handle status codes for me?

Mostly, yes. Webflow returns a 200 for live pages and a real 404 for missing ones automatically, and it lets you add 301 redirects in the site settings without touching code. So the platform gets the basics right, which removes a whole class of technical mistakes for you.

Where you still have to think is redirects and removed content. Webflow will not know that an old blog URL should point to a new one, so you have to add each 301 yourself. When you change a slug, the old URL breaks unless you set that redirect. This ties directly into your wider on-page setup, which I cover in my post on Webflow SEO settings for canonicals, robots, and sitemaps.

Your 404 page is also worth a design pass. Webflow serves the correct 404 code, but the page a visitor sees is up to you. A helpful 404 that guides people back into your site keeps a dead link from becoming a lost visitor, which I explain in my guide to a 404 page that keeps visitors.

What should I check first?

Start with three quick checks: confirm your money pages return 200, confirm every redirect you rely on is a 301 and not a 302, and open Google Search Console to look for soft 404s and server errors. Those three cover the mistakes that quietly cost the most traffic.

Do not try to fix everything at once. Get the important pages right, set permanent redirects where content has moved for good, and clear any soft 404s Search Console flags. That baseline puts you ahead of most sites, which never audit their codes at all.

If you want a hand checking your codes or untangling a redirect mess after a redesign, I am happy to take a look. I do this kind of technical SEO cleanup for founders and small teams every week. Reach out through pravinkumar.co and let's chat about what your pages are really telling Google.