Moz Q&A is closed.
After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.
How to handle potentially thousands (50k+) of 301 redirects following a major site replacement
-
We are looking for the very best way of handling potentially thousands (50k+) of 301 redirects following
a major site replacement and I mean total replacement.Things you should know
Existing domain has 17 years history with Google but rankings have suffered over the past year and yes we know why. (and the bitch is we paid a good sized SEO company for that ineffective and destructive work)
The URL structure of the new site is completely different and SEO friendly URL's rule. This means that there will be many thousands of historical URL's (mainly dynamic ones) that will attract 404 errors as they will not exist anymore. Most are product profile pages and the God Google has indexed them all. There are also many links to them out there.
The new site is fully SEO optimised and is passing all tests so far - however there is a way to go yet.So here are my thoughts on the possible ways of meeting our need,
1: Create 301 redirects for each an every page in the .htaccess file that would be one huge .htaccess file 50,000 lines plus - I am worried about effect on site speed.
2: Create 301 redirects for each and every unused folder, and wildcard the file names, this would be a single redirect for each file in each folder to a single redirect page
so the 404 issue is overcome but the user doesn't open the precise page they are after.
3: Write some code to create a hard copy 301 index.php file for each and every folder that is to be replaced.
4: Write code to create a hard copy 301 .php file for each and every page that is to be replaced.
5: We could just let the pages all die and list them with Google to advise of their death.
6: We could have the redirect managed by a database rather than .htaccess or single redirect files. Probably the most challenging thing will be to load the data in the first place, but I assume this could be done programatically - especially if the new URL can be inferred from the old.Many be I am missing another, simpler approach - please discuss
-
Sorry to hear of your woes.
Depending on the structure of the URLS you could create some simple pattern matches rules within .htaccess? If you could a few dozen rules could handle many thousands of redirects. If there isn't any easily identifiable pattern to match then a DB will, indeed, be your best option.
One of the web devs I used to work with (who was considerably smarter than me) faced a similar issue (with a 'mere' 10k+ redirects) and used some Ruby on Rails middleware as a redirector: This may have been the solution he used:
https://github.com/vigetlabs/redirector
I hope that helps.
I hope you're able to get this sorted without too much pain. Good Luck!
-
Thank for the very quick response - you have picked my favourite solution. It will be interesting to hear other views and comments.
-
Hi,
1. Usually won't work and with 50k extra rules in your htaccess file it will for sure slow down the site as for every request to your server it has to go through the htaccess file.
For now I would recommend going with 6. with the information that you've provided. By doing it like this you can do a very quick check on your database and also in the request have the user send to the right page.
Martijn.
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Website Redesign, 301 Redirects, and Link Juice
I want to change my client’s ecommerce site to Shopify. The only problem is that Shopify doesn’t let you customize domains. I plan to: keep each page’s content exactly the same keep the same domain name 301 redirect all of the pages to their new url The ONLY thing that will change is each page’s url. Again, each page will have the exact same content. The only source of traffic to this site is via Google organic search and sales depend on the traffic. There are about 10 pages that have excellent link juice, 20 pages that have medium link juice, and the rest is small link juice. Many of our links that have significant link juice are on message boards written by people that like our product. I plan to change these urls and 301 redirect them to their new urls. I’ve read tons of pages online about this topic. Some people that say it won’t effect link juice at all, some say it will might effect link juice temporarily, and others are uncertain. Most answers tend to be “You should be good. You might lose some traffic temporarily. You might want to switch some of your urls to the new structure to see how it affects it first.” Here’s my question: 1) Has anyone ever done changed a url structure for an existing website with link juice? What were your results and do you have a definitive answer on the topic? 2) How much link juice (if any) will be lost if I keep all of the exact content the same but only change each page’s url? 3) If link juice is temporarily lost and then regained, how long will it be temporarily lost? 1 week? 1 month? 6 months? Thanks.
Intermediate & Advanced SEO | | kirbyf0 -
Changing URL structure of date-structured blog with 301 redirects
Howdy Moz, We've recently bought a new domain and we're looking to change over to it. We're also wanting to change our permalink structure. Right now, it's a WordPress site that uses the post date in the URL. As an example: http://blog.mydomain.com/2015/01/09/my-blog-post/ We'd like to use mod_rewrite to change this using regular expressions, to: http://newdomain.com/blog/my-blog-post/ Would this be an appropriate solution? RedirectMatch 301 /./././(.) /blog/$1
Intermediate & Advanced SEO | | IanOBrien0 -
SEO impact difference between a URL Rewrite and 301 redirect
Hi guys and girls! Just putting a new site live, we changed the URL from one thing to another and I created a 301 file redirecting the urls like for like. The developer installing it has created a different file with columns like: RewriteRule ^page/ http://www.site/page [R=301,L] RewriteRule ^/page/ http://www.site/page [R=301,L] What's the difference? The page redirects but is there a difference between the 301 redirect and this URL rewrite in terms of SEO and link value?
Intermediate & Advanced SEO | | shloy23-2945840 -
Images Returning 404 Error Codes. 301 Redirects?
We're working with a site that has gone through a lot of changes over the years - ownership, complete site redesigns, different platforms, etc. - and we are finding that there are both a lot of pages and individual images that are returning 404 error codes in the Moz crawls. We're doing 301 redirects for the pages, but what would the best course of action be for the images? The images obviously don't exist on the site anymore and are therefore returning the 404 error codes. Should we do a 301 redirect to another similar image that is on the site now or redirect the images to an actual page? Or is there another solution that I'm not considering (besides doing nothing)? We'll go through the site to make sure that there aren't any pages within the site that are still linking to those images, which is probably where the 404 errors are coming from. Based on feedback below it sounds like once we do that, leaving them alone is a good option.
Intermediate & Advanced SEO | | garrettkite0 -
Multiple 301 redirects for a HTTPS URL. Good or bad?
I'm working on an ecommerce website that has a few snags and issues with it's coding. They're using https, and when you access the website through domain.com, theres a 301 redirect to http://www.domain.com and then this, in turn, redirected to https://www.domain.com. Would this have a deterimental effect or is that considered the best way to do it. Have the website redirect to http and then all http access is redirected to the https URL? Thanks
Intermediate & Advanced SEO | | jasondexter0 -
Remove URLs that 301 Redirect from Google's Index
I'm working with a client who has 301 redirected thousands of URLs from their primary subdomain to a new subdomain (these are unimportant pages with regards to link equity). These URLs are still appearing in Google's results under the primary domain, rather than the new subdomain. This is problematic because it's creating an artificial index bloat issue. These URLs make up over 90% of the URLs indexed. My experience has been that URLs that have been 301 redirected are removed from the index over time and replaced by the new destination URL. But it has been several months, close to a year even, and they're still in the index. Any recommendations on how to speed up the process of removing the 301 redirected URLs from Google's index? Will Google, or any search engine for that matter, process a noindex meta tag if the URL's been redirected?
Intermediate & Advanced SEO | | trung.ngo0 -
Too many 301 redirects?
Hey, My company currently has one chief website with about 500-600 other domains that all feature the same material as the chief website. These domains have been around for about 5 years and have actually picked up some link traffic. I have all of these identical web-pages utilizing rel=canonical but I was wondering if I would be better served, from SEO purposes, to 301 redirect all of these sites to their respective pages on our chief website? If I add 500 301 redirects, will the major search engines consider this to be black-hat link-building even though the sites are related and technically already feature the same content? For an example, the chief website is www.1099pro.com and I would 301 redirect the below sites to the chief site: 1099softwarepro.com 1099softwarepro.info 1099softwarepro.net 1099softwarepro.biz 1099softwareprofessionals.com 1099softwareprofessionals.info ...you get the point
Intermediate & Advanced SEO | | Stew2220 -
Can penalties be passed via 301 redirect?
I have a well established domain that's been hit with some penalties. It hasn't been nuked off the map, just downgraded, especially on short-tail, one word type queries. I'm planning on redirecting this domain to another well established domain. The domains already have a history of lots of interlinking and are very similar from a subject matter standpoint. I feel that the penalized domain has been hit with an "over-optimization" of link anchor text penalty (I'm hoping it's algorithmic, but it could be manual). My question is if anyone has ever heard of a penalty like this being transferred to another domain through a 301 redirect. My hope is that the penalty just puts a cap on how much juice the redirect can pass, rather than transferring the penalty to the other domain itself. Any thoughts on this?
Intermediate & Advanced SEO | | SEOMG1