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
-
Does removal of internal redirects(301) help in SEO
I am planning to completely remove 301 redirects manually by replacing such links with actual live pages/links. So there will be no redirects internally in the website. Will this boost our SEO efforts? Auto redirects will be there for incoming links to non-existing pages. Thanks, Satish
Intermediate & Advanced SEO | | vtmoz0 -
Should I redirect images when I migrate my site
We are about to migrate a large website with a fair few images (20,000). At the moment we include images in the sitemap.xml so they are indexed by Google and drive traffic (not sure how I can find out how much though). Current image slugs are like:
Intermediate & Advanced SEO | | ArchMedia
http://website.com/assets/images/a2/65680/thumbnails/638x425-crop.jpg?1402460458 Like on the old site, images on the new website will also have unreadable cache slugs, like:
http://website.com/site_media/media/cache/ce/7a/ce7aeffb1e5bdfc8d4288885c52de8e3.jpg All content pages on the new site will have the same slugs as on the old site. Should I go through the trouble of redirecting all these images?0 -
For how long does Google honor a 302 redirect?
Greetings! I would love some recent experiences to support our experience which is +/- 1 year old on this question. Based on our experiences around a year ago, I believe that Google will only honor a 302 temporary redirect for a relatively short period - perhaps up to a month - and then it will begin treating the redirect as a 301 redirect and will remove the old page from the index. Have others seen this? Is there an update on what the max "safe" period to have a 302 in place could be? We have a domain that is soon to experience about 3 months of "downtime" with no content on it, but the content will be back after that time. Ideally we would 302 redirect the pages elsewhere just for that downtime period. However, I don't want to do a 302 redirect if there is a risk that the pages will lose all of their accumulated authority and indexing. Basically, is there any safe way to just put the domain on ice for a few months? Please share recent experience only. Thanks for your insights!
Intermediate & Advanced SEO | | g-s-m0 -
Redirect Search Results to Category Pages
I am planning redirect the search results to it's matching category page to avoid having two indexed pages of essentially the same content. Example http://www.example.com/search/?kw=sunglasses
Intermediate & Advanced SEO | | WizardOfMoz
wil be redirected to
http://www.example.com/category/sunglasses/ Is this a good idea? What are the possible negative effect if I go this route? Thanks.0 -
Should I redirect my xml sitemap?
Hi Mozzers, We have recently rebranded with a new company name, and of course this necessitated us to relaunch our entire website onto a new domain. I watched the Moz video on how they changed domain, copying what they did pretty much to the letter. (Thank you, Moz for sharing this with the community!) It has gone incredibly smoothly. I told all my bosses that we may see a 40% reduction in traffic / conversions in the short term. In the event (and its still very early days) we have in fact seen a 15% increase in traffic and our new website is converting better than before so an all-round success! I was just wondering if you thought I should redirect my XML sitemap as well? So far I haven't, but despite us doing the change of address thing in webmaster tools, I can see Google processed the old sitemap xml after we did the change of address etc. What do you think? I know we've been very lucky with the outcome of this rebrand but I don't want to rest on my laurels or get tripped up later down the line. Thanks everyone! Amelia
Intermediate & Advanced SEO | | CommT0 -
301 redirection pointing to noindexed pages
I have rather an unusual situation where a recently launched affiliate site does not have any unique content as its all syndicated content. For that reason we are currently using the noindex,nofollow meta tags to keep the pages out of the search engines index until we create unique content for the pages. The problem is that due to a very tight timeframe with rebranding, we are looking at 301 redirecting (on a page to page basis) another high authority legacy domain to this new site before we have had a chance to add unique content to it and remove the noindex,nofollow tags. I would assume that any link authority normally passed through the 301 would be lost in this scenario but Im uncertain of what the broader impact might be. Has anyone dealt with a similar scenario? I know this scenario is not ideal and I would rather wait until the unique content is up and noindex tags are removed before launching the 301 redirect of the legacy domain but there are a number of competing priorities at play outside of SEO.
Intermediate & Advanced SEO | | LosNomads0 -
Login redirect 302
Ok - anyone knows what to do with the temporary redirect to the login page? In our e-commerce system we have a checkout page, which requires user to be logged in - if they are not, we redirect them to the login page using simple php header("Locaiton: url"). This however has been found as a Warning as it's a temporary redirect. I can't really put there permanent redirect for obvious reasons so if someone could give me some clue on this situation that would be much appreciated.
Intermediate & Advanced SEO | | coremediadesign0 -
Cookies and redirects - what are the negative effects?
I am advising a client who wants to streamline their online customers experience through the use of cookies. The first time someone visits mysite.com, they will visit the normal index page, and on that page will be asked to identify themselves as a Personal or Business customer - and taken through to a relevant page. This will result in a cookie being added. The next time they come back to mysite.com, the cookie will automatically direct them from the index page to mysite.com/personal/ or mysite.com/business/. My question is, what are the SEO implications of this, especially given the fact the index page is their primary landing page for almost all organic traffic? Bots I realise that googlebot etc do not store cookies, so this should result in no change from the bots perspective (i.e. no redirect) but is it that simple? In effect we'll be showing the bot one thing and second time + visitors something else. Is this not effectively cloaking? All advice gratefully received!
Intermediate & Advanced SEO | | seomasters0