301 Redirects in Drupal

301 or permanent redirects are useful if the content of your website has permanently moved to a new URL. This happens more often than you might imagine and a 301 redirect is a great way to send users unknowingly to the new location and to notify Search Engines of the new location of old content.

This way you will keep your Page Rank and Search Engine standing while allowing your URL to change.  If you do not use some sort of redirect then your old URL will still appear in searches sending users to a 404 File Not Found page, thus having your URL disappear from the results not to mention frustrating potential customers.

There are a couple different ways to add 301 redirects to your site. There is the old fashion way, used before there was a module on how to add redirects using the .htaccess file. Then, people created modules to make the process easier. There are 3 different modules you need to know about: Global Redirect, Redirect, and Path Redirect Import. We will cover what each of the modules do, as well as dependencies.

Drupal Global Redirect Module

https://www.drupal.org/project/globalredirect

Configuration Page: admin/config/system/globalredirect

Quick Overview of Configuration Features:

• Non-clean urls to clean urls
• Remove trailing slash
• Language path checking
• Add canonical link to each page
• Front page redirect handler
• Access checking before redirect

Features explained:

1. Deslash and non-clean to clean URLs – helps remove common instances of duplicate URL’s.
2. Remove Trailing Zero Argument – not necessary for Drupal 7. If you’re still on D6, we hope you have a migration plan in the works or at least on the horizon.
3. Menu Access Checking – will make sure the user has access to the redirect destination before redirecting.  Usually left off but you may wish to enable it if you’re trying to hide URLs from people who don’t have access.
4. Case sensitive URL checking – another easy fix to a common duplicate content issue.
5. Language Path Checking – useful for multilingual sites to redirect to the proper language.
6. Add Canonical Link – helps avoid duplicate content using a the canonical link tag.
7. Set Content Location Header – avoids duplicate content that may occur if a piece of content exists in multiple places.
8. Taxonomy Term Path Handler – uses the built in Drupal hook to make sure redirects to taxonomy terms are handled properly.
9. Frontpage Redirect Handler – any time the home page is rendered it will redirect to the canonical version.
10. Ignore Admin Path – an override to make sure no admin paths are redirected.

Drupal Redirect Module

https://www.drupal.org/project/redirect

Configuration Page: admin/config/search/redirect

Quick Overview of Configuration Features:

• Automatically redirect when URL’s change
• Allows you to fix 404 pages
• View list of redirects
• Add single redirect
• Bulk upload redirect files with

First Tab – List (of redirects)

Here you can see all redirects, to update or delete if necessary. You also have the ability to add a single redirect.

Second Tab – Fix 404 Pages

A list of 404 errors logged by the server. Nice to use in combination with GWMT and Open Site Explorer reports. The list is sorted by a count column showing the most visited 404 pages.  If a page has a large 404 hit count it’s a good idea to add a redirect from that page to the proper destination.

Third Tab – Settings

1. Automatically create redirects when a URL alias is changed. Without this if you changed a URL, and forgot to add a redirect the page would drop off the rankings. Important and useful feature.
2. Retain query string through redirect – If a URL has data attached through a query string, this will allow the data to be passed along with the redirect.
3. Set default redirect status. Will be 301 for most people.
4. Allow redirects to be saved into page cache – Allows pages to be redirected, even if the page is cached.
5. Delete redirects that have not been accessed for a certain period. I don’t think this is necessary to do at all, but the setting is there.

Drupal Path Redirect Import

https://www.drupal.org/project/path_redirect_import

Configuration Page: admin/config/search/redirect/import

If you are taking care of doing a lot of redirects at once, life after a site launch (hopefully you started it before), this module allows you to import a .csv file of redirects. Its works with the Redirect module for Drupal 7 and the Path Redirect module for Drupal 6.

You can prepare your file in excel with the old urls in column a, new urls in column b, redirect status code in column c. Be sure to only include everything after the slash (‘/’) after the top level domain. You can choose to include headers, or not; just be sure to identify if you did not using the check box on the import page. You can also choose to override stored redirects.

You will see on the screenshot, the Path Redirect Import module adds a tab to the Drupal 7 Redirect module configuration, making it logical and easy to find.

CSV Example Data:

blog/my-first-blog,blog/the-best-blog-ever,301
welcome,home,301
this/is/a/really/long/url,short-url,301