301 vs 308: A Guide to Understanding HTTP Redirects

Understanding the nuances of web traffic redirection is crucial for website management, particularly when it comes to HTTP status codes like 301 and 308. These codes, while similar in purpose, have distinct functionalities and implications for both users and search engines. A 301 redirect, commonly understood as a permanent redirect signaling the permanent move of a page, is well-documented on the Mozilla Developer Network (MDN Web Docs). In contrast, a 308 redirect, a newer code ensuring that the method and body of the request are not changed in the redirection process, is detailed in the latest HTTP/1.1 specification by the Internet Engineering Task Force (IETF).

This article aims to explore the key differences between these two essential HTTP status codes, incorporating insights and data from recent web development studies to guide you on when and how to use each code effectively. Whether you’re a seasoned web developer or new to website management, this guide will demystify these crucial components of web navigation.

We’ll also provide some tips for implementing redirects on your website to ensure that your users and search engines are always directed to the correct page. Whether you’re a website owner, developer, or marketing professional, understanding the distinctions between these two status codes is essential for ensuring that your website is functioning properly and providing a seamless experience for your users.

Quick & Dirty: Should you use 301 or 308?

HTTP status codes 301 and 308 are both used for redirecting web traffic from one URL to another, but they function differently and serve different purposes. Here are the main differences between these two status codes:

• 301 indicates that a resource has been permanently moved to a new URL and that all future requests for the resource should be directed to the new URL. This code is intended for use with clients that can update their own caches and indexes to reflect the new location of the resource.
• 308 indicates that a resource has been permanently moved to a new URL and that all future requests for the resource must be directed to the new URL. This code is intended for use with clients that cannot update their own caches and indexes to reflect the new location of the resource, and it requires that all clients follow the redirect.
• The main difference between these two codes is that 308 is more strict and requires all clients to follow the redirect, whereas 301 is intended for use with clients that can update their own caches and indexes to reflect the new location of the resource.

It is important to use the correct status code when redirecting web traffic to ensure that users and search engines are directed to the correct page on a website. Using the wrong status code can cause confusion and may result in users or search engines being directed to the wrong page or being unable to access the website at all.

Status Code 301

A ‘301 redirect’, as described by the Mozilla Developer Network (MDN Web Docs), is a permanent redirect that plays a pivotal role in informing both users and search engines that a web page has permanently moved to a new location. This mechanism not only helps in maintaining the integrity of your website’s structure but also preserves its search engine ranking. According to a study published by Search Engine Journal, proper implementation of a 301 redirect can significantly impact a website’s organic traffic, as it efficiently transfers the SEO value from the old URL to the new one. In this article, we’ll dive into the intricacies of ‘Status Code 301’, discussing its importance, technical nuances, and best practices in its application, ensuring you have the knowledge to effectively manage your website’s redirections.”

Which ones is better for SEO?

n general, HTTP status code 301 is considered to be better for SEO than status code 308, because it is more widely supported and understood by search engines and other clients.

Status code 301 indicates that a resource has been permanently moved to a new URL, and it tells search engines and other clients to update their indexes and caches to reflect the new location of the resource. This helps to ensure that users and search engines are directed to the correct page on a website and helps to maintain the website’s search engine rankings.

Status code 308 is a more recent code and is not as widely supported as status code 301. It indicates that a resource has been permanently moved to a new URL and that all clients (including user agents and intermediaries) must follow the redirect. While this code may be useful in certain situations, it is generally not as well understood by search engines and may not be as effective at maintaining the website’s search engine rankings.

In general, it is recommended to use status code 301 for permanent redirects and to avoid using status code 308 unless there is a specific need to do so. This will help to ensure that users and search engines are directed to the correct page on your website and that your website’s search engine rankings are not negatively impacted.

What is a 301 redirect?

HTTP status code 301 is a type of redirect that is used to permanently move a resource from one URL to another. When a user or search engine requests a URL that has been permanently redirected with a 301 status code, they will automatically be redirected to the new URL.

301 redirects are often used when a website has undergone a significant change or reorganization, and the old URLs are no longer valid. For example, if a website has redesigned its structure and moved its pages to new URLs, it may use 301 redirects to permanently redirect traffic from the old URLs to the new URLs.

This ensures that users and search engines are directed to the correct page on the website, and it helps to maintain the website’s search engine rankings.

301 Redirect Example

Here is an example of how a 301 redirect can be implemented in a few different ways:

1. In Apache, a 301 redirect can be implemented using the Redirect directive in the .htaccess file:

Copy codeRedirect 301 /old-page.html http://www.example.com/new-page.html

2. In nginx, a 301 redirect can be implemented using the return directive in the server block configuration:

Copy codeserver {
  server_name example.com;
  return 301 http://www.example.com/new-page.html;
}

3. In PHP, a 301 redirect can be implemented using the header function:

Copy code<?php
  header("HTTP/1.1 301 Moved Permanently");
  header("Location: http://www.example.com/new-page.html");
  exit();
?>

4. In JavaScript, a 301 redirect can be implemented using the window.location object:

Copy codewindow.location.replace("http://www.example.com/new-page.html");

These are just a few examples of how a 301 redirect can be implemented. There are many other ways to implement a 301 redirect, depending on the technology and environment in which the website is running.

Are Javascript 301 redirects a good idea for SEO?

JavaScript-based 301 redirects can be a good solution in some situations, but they are not always the best choice. Here are a few pros and cons to consider when deciding whether to use a JavaScript-based 301 redirect:

Pros:

• JavaScript-based 301 redirects can be implemented quickly and easily, without the need to modify server-side configuration files or use other technologies.
• They can be used on websites hosted on any platform, as long as the website is able to run JavaScript.
• JavaScript-based redirects can be useful for temporary redirects, as they can be easily removed or modified if needed.

Cons:

• JavaScript-based redirects may not be as reliable as server-side redirects, as they depend on the client’s browser and JavaScript execution environment. If a user has JavaScript disabled or if there is an issue with the JavaScript code, the redirect may not work as expected.
• Search engines may not always follow JavaScript-based redirects, especially if they are complicated or involve multiple redirects. This can impact the website’s search engine rankings and make it more difficult for search engines to index the website’s pages.
• JavaScript-based redirects can be slower than server-side redirects, as they require the client’s browser to execute the JavaScript code before the redirect can be performed. This can result in a longer page load time for users.

In general, JavaScript-based 301 redirects are more suitable for simple and temporary redirects, whereas server-side redirects are more reliable and effective for permanent redirects and complex redirect scenarios.

What is a 308?

HTTP status code 308 is a type of redirect that is used to permanently move a resource from one URL to another. Code 308 indicates that the resource has been permanently moved and that all future requests for the resource must be directed to the new URL. This code is intended for use with clients that cannot update their own caches and indexes to reflect the new location of the resource, and it requires that all clients follow the redirect.

Status code 308 is relatively new and not all clients and servers fully support it yet. As a result, it is generally recommended to use status code 301 for permanent redirects, unless there is a specific need to use status code 308.

308 code examples

Here are a few examples of how HTTP status code 308 can be implemented in a few different technologies:

1. In Apache, a 308 redirect can be implemented using the Redirect directive in the .htaccess file:

Copy codeRedirect 308 /old-page.html http://www.example.com/new-page.html

2. In nginx, a 308 redirect can be implemented using the return directive in the server block configuration:

Copy codeserver {
  server_name example.com;
  return 308 http://www.example.com/new-page.html;
}

3. In PHP, a 308 redirect can be implemented using the header function:

Copy code<?php
  header("HTTP/1.1 308 Permanent Redirect");
  header("Location: http://www.example.com/new-page.html");
  exit();
?>

4. In JavaScript, a 308 redirect can be implemented using the window.location object:

Copy codewindow.location.replace("http://www.example.com/new-page.html");

These are just a few examples of how a 308 redirect can be implemented. There are many other ways to implement a 308 redirect, depending on the technology and environment in which the website is running.

Final Thoughts

HTTP status codes 301 and 308 are both used for redirecting web traffic from one URL to another, but they serve different purposes and have different implications for users and search engines. Status code 301 indicates that a resource has been permanently moved to a new URL and that clients can update their own caches and indexes to reflect the new location of the resource. Status code 308 is a more recent code that indicates that a resource has been permanently moved to a new URL and that all clients must follow the redirect.

When deciding which status code to use for a redirect, it is important to consider the specific needs of your website and its users. In general, status code 301 is the preferred choice for permanent redirects, as it is more widely supported and understood by search engines and other clients. Status code 308 may be useful in certain situations, but it is not as well understood and may not be as effective at maintaining the website’s search engine rankings.