As an SEO or site owner, you are bound to run into redirects. Whenever you delete a page, change your URL structure or switch to a new domain, you are going to have to redirect your URLs. You have to tell search engine robots that there has been a change in your URLs and that they have to go somewhere else, temporarily or permanently. Choosing a particular redirect might impact your SEO, so be careful what you pick. In this article, we’ll give a brief of which redirect you could use.
Reasons to use redirects?
If you’re maintaining your site on a regular basis, your tasks include the redirection of URLs. There are many cases when you might use a redirect, but the following will pop-up often. You’ll need a redirect when you:
- Delete a page or post
- Transfer your site to a new domain
- No longer want to use www in your domain
- Enable permalinks in WordPress
- Merge websites
- Change your CMS
- Change your URL structure
HTTP status codes
To understand how redirects work and how you can influence what a server returns to a browser, you need to know about HTTP status codes. A HTTP status code is a set number that a server sends to a browser following a particular request for a page. These codes may include 200, 301, 404 and 503, for instance. All codes serve a particular purpose. A 404, for instance, indicates that a page has not been found. A 503 means that the server is temporarily offline for maintenance.
Types of redirects
There are a couple of redirects that you’ll run into on a daily basis. These are the ones you should remember:
- 301 Permanent redirect
- 302 Found
- 307 Temporary redirect
Not really redirects, but useful nonetheless:
- 410 Content deleted
- 451 Content unavailable for legal reasons
301 Permanent redirect
The 301 is one of the most common redirects; use this if you permanently want to redirect a deleted or moved page, or if you’ve changed something in your permalink structure. Using this redirect, you’ll tell search engine robots that this page is no longer available in this location and that it should no longer be indexed. If you don’t set a redirect correctly, chances are your visitors – and crawl bots – will see 404 error messages. That’s not something you want happening.
Since a 301 permanently leads visitors from the old URL to a new one, you should only use this if you’re sure that you’ll never use the old URL again. If you want to use the URL again, you need a temporary redirect. A 301 passes all the link value a discarded URL has accumulated over the years over to the new URL, thus making sure the new URL gains or retains value.
A 302 is a fairly ambiguous redirect and is often used to make a temporary redirect. The code means that the requested content is found, but it lives under a different location. Why? It doesn’t say. If you want to make sure visitors get to an alternative page when visiting this particular page, and you want to reuse the URL in the future, you can use a 302.
Since this is a temporary redirect, it doesn’t pass link value. Thus, it’s possible to reclaim the URL with its value intact. Don’t use it when moving a site to a new domain or when you’re doing other large-scale renovations on your site.
307 Temporary redirect
302s are often used to create temporary redirects, but with the advent of HTTP1.1 307 has taken its place as a valid temporary redirect. A 307 explicitly states that the requested URL has been moved to a temporary location and will be back in a while. Since this request can change in the future, the request has to keep being made with the original URL. Use this redirect if you’re sure that the move is temporary and that you’ll still need the original URL later on.
Not really redirects, but still
Besides the traditional redirects, you’ll find two more that don’t really redirect. However, these are still relevant for your day-to-day maintenance work on your site. You could see 410 and 451 as a message from your server saying: Hey, there used to be something here, but not anymore.
410 Content deleted
One of the biggest problems on sites is the amount of 404 error pages. If you look at your readouts in Google Search Console, you are bound to run into a few. These must be fixed as fast as possible because no-one likes these errors: Google sees them as a sign of bad maintenance, and visitors get confused by them. 404 errors often occur when the requested page or post was deleted from the site.
You could use a 301 to redirect the page with the 404 to a relevant page, or the homepage, but there might be a different way: tell search engines this page was correctly deleted with a 410 redirect. This way, they know that the page won’t return and can, therefore, delete the page from the index.
451 Content unavailable for legal reasons
Should you ever be ordered by a judge to delete a page or in case you get a notice and takedown request, you should give this page a 451 header. This way, you tell search engines that there was a post here and that you wanted to fulfill this request, but some legal reason told you not to do so.
If you are an expert SEO and you need to do complex redirections, you may need to use REGEX redirects. With normal redirects, you specify a single source URL and a destination URL. With REGEX – regular expressions – redirects, you can, for instance, make a single redirect to move entire groups of URLs with a keyword to a new location. This could save you a ton of time while working on a massive SEO project. However, you should only use REGEX redirects if you know what you are doing because they can break your site.
Working with redirects
Working with redirects is a daily job for many SEOs. In this article, you’ve discovered the different options to redirect pages and learned how and when to use these. Be careful when choosing your redirect, for instance, you don’t want to 302 your entire site when you’re moving to a new domain. This will lead to serious problems down the line. Think about what you want to accomplish and pick the most appropriate redirect method.