This paper explores in depth the negative impact of language-based automatic reorientation on () optimization. Automatic 302 re-direction leads to non-default language pages that cannot be indexed, seriously undermining the site's visibility in search results in different languages. The curriculum will explain why this strategy should be avoided and provide an alternative that takes into account user experience while ensuring seo-friendly, in order to achieve an effective multilingual content index。
The seo challenge for automatic redirection of multilingual websites
A common practice when constructing multilingual websites is based on the user 's browser language (through $ server)
'http accept language'
Head message acquisition) automatically redirects the user to the corresponding language version. For example, a website may have the following url structure:
When the user accesses example. Com/fr/article123 but sets its browser language in english, the system automatically redirects 302 to example. Com/article123. This mechanism is designed to enhance user experience and avoid manual language switching. However, this seemingly convenient strategy poses a serious challenge to (seo)。
The search engine reptiles (e. G. Googlebot, ahrefs website audit, etc.) do not behave in the same way as ordinary users when accessing the site. Reptiles usually do not carry specific language preferences, or their default language may be english. When reptiles try to access example. Com/fr/article123, they are likely to be redirected to the english version example. Com/article123. This means:
The following is a typical example of a php code re-direction based on browser language, which illustrates this mechanism:
Funcinglong reddirect()
/ / check if re-directed within the last 24 hours or not implemented
if (issuet)Ookie ['lang reddirect'])
i'm sorry.
♪ i'm sorry ♪
global dollar, $requesturi;
/ / get browser preference for languages such as 'fr', 'de', 'en'
$browserlang = getlang ($ server['http accept language'];
// get the corresponding multilingual chain according to browser language answer.
$l= lang translation lInk ($browserlang);
// if the browser language does not correspond to the current page language and there is a corresponding translation link, re-direction 302
if ($browserlang! = $lang) & ($l){ink! = ')
headerInk, true, 302; / /use 302 for temporary reorientation
♪ i'm sorry ♪
/ set a cLookie, avoid redirecting in 24 hours. Header("set-c")Lookie: lang reddirect=1; max-age=86400; path=/; htponly; samesite=lax”;
♪ i'm sorry ♪
Although the code is trying to pass through cLookie optimizes user experience and avoids frequent re-direction, but for not dealing with cIn the case of the lookie search engine reptile, each visit triggers re-direction, thus impeding its discovery and indexing of multilingual content。
Why autodirective damage to seo
Based on $ server
'http accept language'
The risk to seo of automatic re-direction is mainly as follows:
Carcinogen capture is hampered: when searching engine reptiles capture websites, they usually do not proactively simulate user behaviour in a particular region or language. When they visit urls in a given language (e. G. /fr/), they cannot retrieve and index the contents under the original url if they are redirected to another language version (e. G. /en/). This has resulted in non-default language versions of the website being almost invisible in search results. Potentially impaired user experience: although originally intended to be user-friendly, this automatic reorientation may be counterproductive in some cases. For example, a german-speaking user may wish to view the english version of the text, but is forced to redirect to the german page. If users cannot easily switch back to the language they wish to visit, this can result in poor user experience. The hreflang label is invalid: the hreflang label is the key to a multilingual seo that tells the search engine about the relationship between different language or regional versions. If the page is automatically re-directed, the search engine may not be able to correct the hreflang label, thereby rendering it unable to understand the multilingual structure of the site. Seo friendly multilingual website strategy
To ensure that multilingual websites provide both a good user experience and optimal search engine visibility, $ server should be removed
'http accept language'
The automatic reorientation mechanism. Instead, we recommend the following seo friendly strategies:
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