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.
303 redirect
-
Hi,
303 redirect is a good thing or not ?
I have a homepage in 2 languages FR and EN > mywebsite.com/fr/ and mywebsite.com/en/.
A 303 redirect is on mywebsite.com to mywebsite.com/fr/.
Thanks
D.
-
Hi Wesley & D.,
I really appreciate the what you said & did however I did not administer the experiment or create content.
Thank you for the kind words however I did not do the work for this I only for the used it as a reference to describe the situation.
I am glad it helped,
All the best,
Thomas
-
Very descriptive answer. Love that you describe your entire experiment.
Thank you for this extra bit of information.
-
affect SERPs the 303 redirect remains fairly unknown because it is rarely used.
I came across a website linking to one of my sites with a 303 but I could not find a definitive answer of whether or not this link passed any PageRank. Information online about this was scarce and the only information I found was from people saying that only 301 redirects pass PageRank.
When I checked the status code for 303 redirect at w3.org it was “See other” . The description reads as follows:
“The new URI is not a substitute reference for the originally requested resource. The 303 response MUST NOT be cached, but the response to the second (redirected) request might be cacheable.”
This sounds very black and white and I my initial guess was that Google does not flow PR for 303 redirects. But I was curious, how was Google treating 303 redirects?
I set up an experiment to check how Google was handling the 303. Results below:
*Note: The translation for this keyword is NSFW

Google will show the search result with the URI that is initially requested. It will then show the Page Title and Meta Description (or other descriptive snippet) for the redirected page but it will show the URI from the redirecting page. It is caching the text from the final page but assigning it to the requested page.
How Google caches 303 redirects
Page A 303 redirects to Page B
Title: Page B
URI: Page A
Meta Description: Page B
Since page B does not rank for this keyword it is confirmed that the 303 redirect does not flow PR.
How did I set this test up?
- I chose a rare keyword that had very few pages ranking for it.
- On www.a.com I created two pages containing the keyword with the same exact content (www.a.com/a.htm .com/b.htm)
- One page (www.a.com/a.htm) was linked to internally multiple times
- One page (www.a.com/b.htm) was linked to externally with 303 redirects only from two domains (including www.marketingchip.com)
- The 303 redirects were created on the external pages (www.marketingchip.com/special-doors.html -> 303 -> www.a.com/b.htm)
After a few days neither www.a.com/a.htm nor www.a.com/b.htm appear in the results. However the number one listing for this keyword was forwww.marketingchip.com/special-doors.html but the meta title and the meta description are taken from www.a.com/b.htm. I acquired the information from this URL and would agree with Wesley definitely 301 redirect the link to not use a 303 and less you are trying to accomplish something similar to what it's shown above or in Wesley's comment. http://www.marketingchip.com/seo-experiments/how-does-a-303-redirect-affect-seo/ Sincerely, Thomas
-
A 303 won't send 'link juice' that means that all the value you website gets on mywebsite.com won't be send to mywebsite.com/fr/. You should use a 301 instead.
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
-
Is an iframe redirect on the same Domain bad for SEO
Good morning. We have a vendor that has created a landing page with content that we want to use. Because of the way we built the site, the only way to use the content is to create an i-frame. The i-frame is re-directingon the same Domain. Would we benefit from the SEO Content?
Intermediate & Advanced SEO | | jdenbo_edf0 -
301 Redirect - Rank Recovery Examples?
Hi All, I recently did a 301 redirect. Page to Page and the notified google via its console. Its been 6 days since. The home page and one other high traffic page swopped out with the new domain on google search index with 3-4 drops in ranking for each. The rest of the sites pages have been indexed but still reflect the old domain when searched. Recently today my home page dropped even further to the second page of google index for the specific keyword. Can you share similar experiences and how long it took you to recover rank fully? and how long for all pages to swop out on google search's index? Regards Mike
Intermediate & Advanced SEO | | MikeBlue10 -
301 Redirects to relative URLs not absolute a problem?
Hi we recently did a migration and a lot of content changed locations see: https://d.pr/i/RvqI81 Basically, the 301 goes to the correct location but its a relative URL (as you can see from the screenshot) rather than absolute URL. Do you think this is a high priority issue from an SEO standpoint, should we get the developer to change the redirects to absolute? Cheers.
Intermediate & Advanced SEO | | cathywix0 -
301 redirect hops from non-https and www
It's best practice to minimize the amount of 301 redirect hops. Ideally only one redirect hop. It's also best practice to 301 redirect (or at least canonical) your non-https and/or your non-www (or www) to the canonical protocol/subdomain. The simplest (and possibly the most common) way to implement canonical protocol/subdomain redirects is through a load balancer or before your app processes the request. Both of which will just blanket 301 to the canonical domain/protocol regardless if the path exists or not In which case, you could have: Two hops. i.e. hop #1 http://example.com/foo to https://example.com/foo, hop #2 https://example.com/foo to https://example.com/bar 301 to a 404. Let's say https://example.com/dog never existed, but somebody for whatever reason linked to it (maybe a typo). If I request https://www.example.com/dog, the load balancer would 301 to a 404 page. Either scenario above should be fairly rare. However, you can't control how people link to you. Should I care about either above scenario? I could have my app attempt to check if the page exists before forwarding, but that code could be complicated.
Intermediate & Advanced SEO | | dsbud0 -
Domain Redirect and SSL Cert
Hi, When redirecting an entire site to another domain, do you have to maintain the SSL certificate? The SSL expires 3 days before the planned redirect. Thanks in advance.
Intermediate & Advanced SEO | | sofla_seo0 -
Php 301 redirect
Hi I am migrating an old wordpress site to a custom PHP site and the URL profiles will be different, so want to retain all link profiles and more importantly if a user visits the old urls via search then they are seamlessly transferred to the new equivalent page For example www.domain.com/about-us is going to need to redirect to www.domain.com/aboutus.php www.domain.com/furniture is going to need to redirect to www.domain.com/furniture-collections.php etc What is the best way of achieving this apart from .htaccess as not 100% confident of doing this. Could it be done via PHP or using meta tags?
Intermediate & Advanced SEO | | ocelot0 -
Buying an existing domain with higher ranks for redirecting
I've recently came across one of my competitors who's looking to sell their domain. Now they currently rank higher than my primary site for a few keywords we are targeting. Would it be wise to buy the domain and do a name server change over to my primary domain? Would it even help boost ranks for the keywords they rank higher for? Or will the link juice be minimal? Any thoughts would be great!
Intermediate & Advanced SEO | | upick-1623910 -
Old Redirecting Website Still Showing In SERPs
I have a client, a plumber, who bought another plumbing company (and that company's domain) at one point. This other company was very old and has a lot of name recognition so they created a dedicated page to this other company within their main website, and redirected the other company's old domain to that page. This has worked fine, in that this page on the main site is now #1 when you search for the other old company's name. But for some reason the old domain comes up #2 (despite the fact that it's redirecting). Now, I could understand if the redirect had only been set up recently, but I'm reasonably sure this happened about a year ago. Could it be due to the fact that there are many sites out there still linking to that old domain? Thanks in advance!
Intermediate & Advanced SEO | | VTDesignWorks1