Response codes impact every page, image and file on your website.
A visiting search engine bot figures out what to do based on those codes. Incorrect response codes can cause:
- Indexation problems;
- Duplicate content;
- Site performance problems;
- All manner of other site higgledy-piggledy.
301 Permanent redirect-
The most common use for
redirecting users from old places to new ones is through using the 301-redirect
which basically tells the server that some content has permanently moved from
one place to another.
301 redirects helps in
proper passing of the link juice without seriously affecting the search engine
positioning of the website.
302, 307 Temporary redirect
This was previously debated to be equal to the 301 redirect with regards
to SEO purposes. I think the debate is killed nowadays as it is pretty evident
that the 301 works a lot better, even if temporary. Basically it tells the
requesting server that the content is there, only just not now. It also tells
the server that it should continue to request the “old” place in the future as
well as the content will return to there in a while.
307 redirects are temporary in nature and are mostly used by web
developers.
303 Use GET method to
retrieve
This is basically telling the server to use a specific method to fetch
the information on the server and is not applicable in this exercise. 303
redirects are "see other" redirects. It tells the search engines that
the requested resource exists on a different url. This type of redirect does
not passes the link value and should be avoided.
304
304 redirects tells the search engines that the requested resource is not modified. Hence these are known as "Not Modified" redirects.
304 redirects tells the search engines that the requested resource is not modified. Hence these are known as "Not Modified" redirects.
305 Use Proxy to fetch
The 305 redirect tells the agent that the resource requested must be
fetched via proxy.
305 redirects tells the agents to locate the resource using a proxy. The
location field must be specified that contains the URL of the proxy.
404.
Page
not found. If a file simply doesn’t exist, your server should deliver a 404 status.
You can use a 410 response if you want Googlebot to retry the bad URL less
frequently.
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