What Is a 301 Redirect and When Should You Use One?

If you have ever moved a page on your website and then found customers landing on an error message, you have met the problem a redirect solves. So, what is a 301 redirect? In plain terms, it is a signpost that tells browsers and search engines that a page has moved permanently to a new address, and that everyone should go there instead.

In my experience running a digital marketing agency, redirects are one of the most common things that go wrong when a business redesigns its website. They are also one of the easiest things to fix once you understand them. This guide explains the basics without the jargon, and shows you when to use one and when to avoid it.

What is a 301 redirect, in plain English?

Think of moving house. You tell the post office your new address, and your letters keep arriving. The answer to what is a 301 redirect really comes down to that idea: the web version of a forwarding address.

When someone types in an old web address, the server replies with a status code. A 301 code means “moved permanently”. The browser then jumps straight to the new address, and the visitor barely notices. Search engines notice, though, and they take it as a clear instruction that the old page has been replaced.

The same idea is behind the phrase 301 redirect meaning. The “301” is just the number of the status code, and “redirect” is the action of sending people elsewhere. Put together, a 301 redirect means “this page now lives somewhere else for good”.

What happens behind the scenes

Another way to see what is a 301 redirect doing is to follow one request.

Here is the simple version of the journey:

• A visitor clicks a link or types in the old address.
• Your website server receives the request and checks its redirect rules.
• The server replies with a 301 and the new address.
• The browser loads the new page, and the visitor carries on.

All of that takes a fraction of a second. Because it happens on the server, before any page appears, it is the most reliable way to move people. Google’s own guidance says server-side redirects are the type it is most likely to interpret correctly.

Why a 301 redirect matters for your website

When people ask me what is a 301 redirect actually useful for, I tell them it protects three important things.

Your visitors

Nobody enjoys clicking a link and hitting a “page not found” message. They usually leave and rarely come back. A redirect keeps the journey smooth, which is especially important if the old address is printed on a leaflet, saved in someone’s bookmarks or sitting in an old email.

Your search rankings

The 301 redirect meaning for search engines is simple: replace the old page with the new one. Over time, a page collects links from other websites and builds a reputation with Google. If you delete or move it with no redirect, that reputation can be lost. A permanent redirect passes the signal to the new address, so Google treats the new page as the replacement and shows it in search results.

Your sales and enquiries

Old pages often bring in real enquiries. If a service page that used to bring in calls suddenly leads nowhere, that is money walking out of the door. A quick redirect is cheap insurance.

When should you use a 301 redirect?

The simple rule is this: use a 301 when the change is permanent. These are the situations where it is the right tool.

• You have changed a page address. Maybe you renamed “/services-2” to “/services” or tidied up your URLs.
• You have deleted a page that has a close replacement. Send visitors to the most relevant live page, not just the home page.
• You are redesigning or rebuilding your site. New platforms often create new address structures, and every important old address needs to point to its new equivalent.
• You are moving to a new domain. Each old page should forward to its matching page on the new domain.
• You are switching from HTTP to HTTPS. Every insecure address should forward to the secure version.
• You want one version of your site. For example, forwarding “www” and non-“www” versions to a single preferred one.
• You are merging similar pages. If two articles cover the same topic, combine them and redirect the weaker one to the stronger one.

If you are not sure whether duplicate pages need a redirect or a different fix, take a look at our guide on what a canonical URL is. A canonical tag suggests which page is the main one, whereas a redirect actually sends the visitor.

When you should not use a 301 redirect

A permanent redirect is a strong signal, so pause before you use one. Avoid it in these cases.

• The move is temporary. If a page is down for maintenance or you are running a short promotion, use a temporary redirect (a 302 or 307) instead. These tell Google the original page will return.
• There is no relevant replacement. Redirecting every deleted page to your home page can confuse visitors, and Google may treat it like a “not found” anyway. In that case, it is better to show a helpful 404 page.
• You may reverse the change. Google advises using permanent redirects only when you are sure the redirect will not be reverted.

301 vs 302: what is the difference?

This is the most common point of confusion. Both send visitors to a new address, but they send a different message to search engines.

• 301 (permanent): “This page has moved for good. Treat the new address as the main one.”
• 302 (temporary): “This page has moved for now. Keep the original in your records.”

Google explains that with a permanent redirect, the new address is treated as the canonical version and shown in search results. With a temporary one, the original page usually stays in results. A 308 works like a 301, and 307 works like a 302, but those are less common on small business sites.

If you pick the wrong one, you may wait longer for the right page to show in search. When in doubt, ask yourself one question: will the old page ever come back? If the answer is no, a 301 is the right choice.

How to set up a 301 redirect

The method depends on how your website is built. Here are the most common routes.

On WordPress

Most WordPress sites use a plugin to manage redirects. Popular SEO plugins and dedicated redirect plugins let you type in the old address and the new address, choose 301, and save. Many will also offer to create a redirect automatically if you change a page’s address. If you are not comfortable adding plugins, ask your web team to do it.

On website builders

Platforms such as Wix, Squarespace and Shopify have a redirect or URL mapping area in their settings. You enter the old path and the new one, and the platform handles the rest.

On the server

If your site runs on an Apache server, redirects can be added to a file called .htaccess. Other servers use their own configuration files. This is the most flexible approach, but a small typing mistake can take a website offline, so it is best left to someone who does this regularly.

A quick checklist for any method

• Make a list of the old addresses and the best matching new page for each one.
• Point each old page to the closest match, not simply the home page.
• Set the redirect type to 301.
• Test each one by typing in the old address and checking where you land.
• Update your internal links so they point straight to the new address.

Common 301 redirect mistakes to avoid

Many owners worry about what is a 301 redirect going to cost them in rankings. Done properly, the answer is nothing, and most problems are easy to prevent. Here are the ones I see most often when businesses relaunch a website.

Redirect chains

A chain happens when page A forwards to page B, which forwards to page C. Each extra hop slows things down and adds risk. Where you can, forward the old page directly to the final destination.

Redirect loops

A loop is when two pages forward to each other, so the visitor never arrives anywhere. Testing every redirect after you create it catches this quickly.

Sending everything to the home page

It can feel like a quick win, but it is a poor experience. Someone looking for a specific service lands on a general page and has to start again. Match like with like wherever possible.

Forgetting to update links

A redirect is a safety net, not a replacement for tidy links. After you move a page, update your menus, buttons and blog links so they point to the new address. That keeps your site quicker and cleaner. If you need ideas for what to link to, our list of new business content ideas is a good place to start.

Removing redirects too early

Google does not give a fixed time for how long to keep a redirect in place. As a practical rule, keep it for as long as the old address might still be used by people or by links from other websites. For most small businesses that means leaving it in place indefinitely, since it costs almost nothing.

How to check your redirects are working

Once your redirects are live, a few simple checks will give you peace of mind.

• Test by hand. Paste an old address into your browser and see where it takes you.
• Use Google Search Console. The free tool shows pages with errors and helps you spot old addresses that still need attention.
• Run a crawl. Free and paid website crawlers list every redirect, chain and loop on your site in one report.
• Watch your traffic. After a relaunch, keep an eye on visits to key pages for a few weeks. A sudden drop can point to a missing redirect.

Customer comments are another early warning. If someone says a link is broken, fix that address quickly. And if feedback arrives publicly, our advice on how to respond to Google reviews can help.

Frequently asked questions

What is a 301 redirect and does it hurt SEO?

It is a permanent forward from an old address to a new one. Used properly it does not hurt SEO; it is the recommended way to move a page without losing its place in search. Problems usually come from long chains, loops or redirecting to irrelevant pages.

How long does it take Google to notice a redirect?

It varies. Google needs to revisit the old address, so it can take days or weeks for the new page to replace the old one in results. Larger or less visited sites may take longer.

What is the difference between a 301 redirect and a canonical tag?

A redirect physically sends visitors to a new address. A canonical tag leaves both pages live but tells Google which one to treat as the main version.

Can I do a 301 redirect myself?

Often, yes. On WordPress or a website builder it is usually a few clicks. For server-level changes, ask someone experienced, as small errors can affect the whole site.

Where to go from here

Hopefully the question of what is a 301 redirect now feels simple. Redirects are not glamorous, but they protect the hard work you have put into your website. If you are planning a redesign, or you suspect old links are sending customers to dead ends, I am happy to point you in the right direction. You can get in touch here, or head back to the Jonathan Bird home page for more practical business advice.