{"id":137,"date":"2024-09-19T12:58:32","date_gmt":"2024-09-19T10:58:32","guid":{"rendered":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/?page_id=137"},"modified":"2024-10-21T13:15:06","modified_gmt":"2024-10-21T11:15:06","slug":"presmerovani-webu","status":"publish","type":"page","link":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/seznambot\/presmerovani-webu\/","title":{"rendered":"P\u0159esm\u011brov\u00e1n\u00ed webu"},"content":{"rendered":"\n<p>Pokud p\u0159ed\u011bl\u00e1v\u00e1te web a&nbsp;m\u011bn\u00edte strukturu URL adres tak, \u017ee star\u00e9 str\u00e1nce odpov\u00edd\u00e1 n\u011bjak\u00e1 nov\u00e1, je dobr\u00e9 vyu\u017e\u00edt p\u0159esm\u011brov\u00e1n\u00ed. Ide\u00e1ln\u00ed stav je, kdy jedn\u00e9 star\u00e9 adrese odpov\u00edd\u00e1 jedna nov\u00e1 adresa.<\/p>\n\n\n\n<p>Pokud p\u0159esm\u011brov\u00e1n\u00ed nepou\u017eijete a&nbsp;star\u00e1 str\u00e1nka bude vracet <a href=\"..\/odstranovani-stranek\/\">HTTP odpov\u011b\u010f 404<\/a>, bude vy\u0159azena z&nbsp;indexu. Do indexu by se sice \u010dasem dostala str\u00e1nka nov\u00e1, ale odkazy na starou verzi by se nep\u0159epo\u010d\u00edtaly ve prosp\u011bch nov\u00e9 str\u00e1nky.<\/p>\n\n\n\n<p>D\u00e1le nedoporu\u010dujeme nechat starou verzi webu na star\u00fdch adres\u00e1ch nad\u00e1le v&nbsp;chodu. Str\u00e1nky by z\u016fstaly v&nbsp;indexu, a&nbsp;maj\u00ed-li podobn\u00fd obsah jako str\u00e1nky nov\u00e9, mohl by algoritmus nov\u00e9 str\u00e1nky pova\u017eovat za obsahov\u00e9 duplicity a&nbsp;ve v\u00fdsledc\u00edch d\u00e1vat p\u0159ednost star\u00fdm adres\u00e1m. Tak\u00e9 u\u017eivatel\u00e9, kte\u0159\u00ed by nav\u0161t\u00edvili starou neaktu\u00e1ln\u00ed verzi, by mohli z\u00edskat nespr\u00e1vn\u00fd dojem o stavu str\u00e1nek. Jak by nov\u00e9 adresy postupn\u011b z\u00edsk\u00e1valy odkazy, t\u0159\u00ed\u0161tila by se n\u00e1v\u0161t\u011bvnost i&nbsp;ranky mezi starou a&nbsp;novou verz\u00ed webu, co\u017e nen\u00ed \u017e\u00e1douc\u00ed. Nen\u00ed probl\u00e9m starou verzi nechat b\u011b\u017eet p\u00e1r dn\u016f nebo t\u00fddn\u016f, ne\u017e odlad\u00edte p\u0159\u00edpadn\u00e9 chyby, ale dlouhodob\u011b rozhodn\u011b doporu\u010dujeme p\u0159esm\u011brovat na novou verzi.<\/p>\n\n\n\n<p>Pokud naopak vytv\u00e1\u0159\u00edte \u00fapln\u011b nov\u00fd web, ve kter\u00e9m ji\u017e p\u016fvodn\u00ed obsah nebude, je lep\u0161\u00ed na zanikl\u00fdch adres\u00e1ch vracet <b>stav HTTP 404<\/b> a&nbsp;obsah nep\u0159esm\u011brov\u00e1vat. Kdo se rozhodne v\u0161echny star\u00e9 adresy jen p\u0159esm\u011brov\u00e1vat na hlavn\u00ed str\u00e1nku nov\u00e9ho webu, tomu se ranky a&nbsp;odkazy stejn\u011b nezachovaj\u00ed. Zachovaly by se, kdyby ka\u017ed\u00e1 star\u00e1 str\u00e1nka m\u00ed\u0159ila na n\u011bjakou konkr\u00e9tn\u00ed str\u00e1nku nov\u00e9ho webu s&nbsp;podobn\u00fdm nebo stejn\u00fdm obsahem (jak popisujeme v\u00fd\u0161e).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zm\u011bna dom\u00e9ny<\/h2>\n\n\n\n<p>Chcete-li sv\u016fj web provozovat na jin\u00e9 dom\u00e9n\u011b ne\u017e dosud, p\u0159esm\u011brov\u00e1n\u00ed star\u00fdch adres na nov\u00e9 je rozumn\u00e9 \u0159e\u0161en\u00ed jak pro u\u017eivatele, tak pro vyhled\u00e1va\u010de.<\/p>\n\n\n\n<p>Op\u011bt samoz\u0159ejm\u011b plat\u00ed, \u017ee je nejlep\u0161\u00ed p\u0159esm\u011brovat str\u00e1nky 1:1. Tedy str\u00e1nce na star\u00e9 dom\u00e9n\u011b by m\u011bla odpov\u00eddat str\u00e1nka na nov\u00e9 dom\u00e9n\u011b. V&nbsp;p\u0159\u00edpad\u011b p\u0159esm\u011brovan\u00e9 cel\u00e9 dom\u00e9ny ale nav\u00edc doporu\u010dujeme p\u0159esn\u011b zachovat podobu cesty. Na\u0161emu vyhled\u00e1va\u010di to umo\u017en\u00ed rychleji pochopit, \u017ee se cel\u00fd web p\u0159esm\u011brov\u00e1v\u00e1 a \u017ee jde o&nbsp;prost\u00fd p\u0159esun z&nbsp;dom\u00e9ny na dom\u00e9nu bez zm\u011bny struktury webu a cest. M\u016f\u017ee pak za\u010d\u00edt s&nbsp;p\u0159epo\u010d\u00edt\u00e1v\u00e1n\u00edm je\u0161t\u011b d\u0159\u00edve, ne\u017e robot obejde v\u0161echny star\u00e9 adresy.<\/p>\n\n\n\n<pre title=\"P\u0159\u00edklad dvojic p\u0159esm\u011brovan\u00fdch URL s\u00a0nezm\u011bn\u011bnou cestou:\" class=\"wp-block-code\"><code lang=\"adoc\" class=\"language-adoc line-numbers\">http:\/\/stara-domena.xxx&gt;\/ &gt;&gt; http:\/\/nova-domena.xxx\/\nhttp:\/\/stara-domena.xxx\/kontakt.html &gt;&gt; http:\/\/nova-domena.xxx\/kontakt.html \nhttp:\/\/stara-domena.xxx\/?pageid=226 &gt;&gt; http:\/\/nova-domena.xxx\/?pageid=226<\/code><\/pre>\n\n\n\n<p>Jak je vid\u011bt, dom\u00e9na se m\u011bn\u00ed, ale <b>cesta<\/b> z\u016fst\u00e1v\u00e1 v\u017edy stejn\u00e1. (\u0160ipka -&gt; zde symbolicky znamen\u00e1 n\u011bjak\u00e9 v\u00fd\u0161e popsan\u00e9 p\u0159esm\u011brov\u00e1n\u00ed.)<\/p>\n\n\n\n<p>Pokud byste cht\u011bli z\u00e1rove\u0148 s&nbsp;dom\u00e9nou m\u011bnit i&nbsp;n\u011bjak\u00e9 cesty, ud\u011blat to m\u016f\u017eete, ale n\u00e1\u0161 algoritmus t\u00edm uvedete do nejistoty, zda spr\u00e1vn\u011b uhodl zp\u016fsob p\u0159esm\u011brov\u00e1n\u00ed. Porad\u00ed si s&nbsp;t\u00edm teprve a\u017e obejde v\u0161echny URL a&nbsp;pod\u00edv\u00e1 se jednu po druh\u00e9, kam p\u0159esn\u011b se p\u0159esm\u011brov\u00e1vaj\u00ed. To m\u016f\u017ee v\u00e9st k&nbsp;del\u0161\u00edmu p\u0159epo\u010d\u00edt\u00e1v\u00e1n\u00ed rank\u016f jednotliv\u00fdch str\u00e1nek i&nbsp;cel\u00e9ho webu.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Zm\u011bna protokolu na HTTPS<\/h2>\n\n\n\n<p>Plat\u00ed tot\u00e9\u017e co u&nbsp;zm\u011bny dom\u00e9ny. Pokud budete cel\u00fd web p\u0159esm\u011brov\u00e1vat tak, \u017ee zm\u011bn\u00edte pouze HTTP na HTTPS (nebo naopak) a&nbsp;v\u0161echno ostatn\u00ed zachov\u00e1te, n\u00e1\u0161 algoritmus by m\u011bl pochopit, \u017ee se p\u0159esm\u011brov\u00e1v\u00e1 cel\u00fd web na https verzi. P\u0159epo\u010det rank\u016f pro nov\u00e9 adresy pak provede v\u00fdrazn\u011b rychleji, ne\u017e kdyby musel v\u0161echny star\u00e9 adresy obch\u00e1zet.<\/p>\n\n\n\n<p>Pokud se chcete obej\u00edt bez p\u0159esm\u011brov\u00e1n\u00ed a&nbsp;sv\u00e9 str\u00e1nky chcete (z r\u016fzn\u00fdch d\u016fvod\u016f) provozovat z\u00e1rove\u0148 na obou protokolech, je dobr\u00e9 \u0159\u00edci vyhled\u00e1va\u010di, kterou z&nbsp;t\u011bchto verz\u00ed m\u00e1 ve v\u00fdsledc\u00edch preferovat. K tomu se krom\u011b p\u0159esm\u011brov\u00e1n\u00ed hod\u00ed tak\u00e9 <a href=\"..\/kanonicke-url\/\">kanonick\u00fd link<\/a>. Dejme tomu, \u017ee si jako hlavn\u00ed vyberete <b>HTTPS<\/b> verzi. Potom do HTTP verze um\u00edst\u00edte do hlavi\u010dky tuto html zna\u010dku:<\/p>\n\n\n\n<pre title=\"&amp;nbsp;\" class=\"wp-block-code\"><code lang=\"markup\" class=\"language-markup\">&lt;link rel=\"canonical\" href=\"https:\/\/example.com\/cesta-k-aktualni-strance\" \/&gt;<\/code><\/pre>\n\n\n\n<p>V p\u0159\u00edkladu samoz\u0159ejm\u011b mus\u00edte nahradit adresu za skute\u010dnou adresu konkr\u00e9tn\u00ed str\u00e1nky (viz informace na str\u00e1nce o&nbsp;<a href=\"..\/kanonicke-url\/\">kanonick\u00e9m linku<\/a>). Chov\u00e1n\u00ed str\u00e1nky touto zna\u010dkou nebude nijak ovlivn\u011bno, ale n\u00e1\u0161 vyhled\u00e1va\u010d bude v\u011bd\u011bt, kterou verzi preferujete. Samoz\u0159ejm\u011b je pot\u0159eba m\u00edt na obou verz\u00edch toto\u017en\u00fd obsah.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Dal\u0161\u00ed doporu\u010den\u00ed p\u0159i zm\u011bn\u00e1ch adres cel\u00e9ho webu<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P\u0159i zm\u011bn\u011b adres cel\u00e9ho webu se ujist\u011bte, \u017ee odkazy mezi jednotliv\u00fdmi str\u00e1nkami vedou na nov\u00e9 adresy. Pokud by n\u011bjak\u00fd odkaz vedl na starou verzi, tak to sice funk\u010dn\u011b nevad\u00ed, ale u\u017eivatele i&nbsp;na\u0161eho robota nut\u00edte proj\u00edt p\u0159esm\u011brov\u00e1n\u00edm.  <\/li>\n\n\n\n<li>Nezapome\u0148te zm\u011bnit adresy v&nbsp;souborech <a href=\"..\/sitemap-xml\/\">sitemap<\/a>, pokud je pou\u017e\u00edv\u00e1te.  <\/li>\n\n\n\n<li>Na\u0161emu obr\u00e1zkov\u00e9mu hled\u00e1n\u00ed pom\u016f\u017ee, pokud na novou dom\u00e9nu nebo protokol p\u0159esm\u011brujete i&nbsp;obr\u00e1zky.  <\/li>\n\n\n\n<li>Pokud sv\u016fj web provozujete v\u00edcekr\u00e1t se stejn\u00fdm obsahem na v\u00edce dom\u00e9n\u00e1ch nebo subdom\u00e9n\u00e1ch (takzvan\u00fd alias), zva\u017ete rad\u011bji p\u0159esm\u011brov\u00e1n\u00ed v\u0161ech dom\u00e9n na jednu hlavn\u00ed dom\u00e9nu. V&nbsp;p\u0159\u00edpad\u011b v\u00edce dom\u00e9n se stejn\u00fdm obsahem se n\u00e1\u0161 robot principi\u00e1ln\u011b nem\u00e1 podle \u010deho rozhodnout, kterou z&nbsp;nich m\u00e1 p\u0159ednostn\u011b indexovat a&nbsp;prohled\u00e1vat, tak\u017ee se m\u016f\u017ee st\u00e1t, \u017ee si z&nbsp;r\u016fzn\u00fdch dom\u00e9n vybere r\u016fzn\u00e9 str\u00e1nky a&nbsp;pak se odkazy a&nbsp;ranky t\u0159\u00ed\u0161t\u00ed. Stejn\u00e9 texty na r\u016fzn\u00fdch dom\u00e9n\u00e1ch jsou tak\u00e9 posti\u017een\u00e9 algoritmem, kter\u00fd p\u0159i vyhled\u00e1v\u00e1n\u00ed vy\u0159azuje obsahov\u00e9 duplicity. Proto <b>d\u016frazn\u011b doporu\u010dujeme<\/b> p\u0159esm\u011brov\u00e1n\u00ed alias\u016f na jednu hlavn\u00ed dom\u00e9nu.  <\/li>\n\n\n\n<li>Jestli\u017ee n\u00e1\u0161 robot najde odkaz na <a href=\"..\/robots-txt\">robots.txt<\/a>, kter\u00fd je p\u0159esm\u011brov\u00e1n, nebude ho zpracov\u00e1vat. Pokud ze star\u00e9 dom\u00e9ny (nebo protokolu) p\u0159esm\u011brujete i&nbsp;robots.txt, robot nad\u00e1le na star\u00e9m webu nem\u016f\u017ee v\u011bd\u011bt, kam podle spr\u00e1vce webu nesm\u00ed. Jestli\u017ee na star\u00e9m webu nad\u00e1le m\u00e1te str\u00e1nky, kter\u00e9 nechcete nechat robotem prohled\u00e1vat, <b>ujist\u011bte se, \u017ee robots.txt nep\u0159esm\u011brov\u00e1v\u00e1te<\/b>.  <\/li>\n<\/ul>\n\n\n\n<p><b>P\u0159ed nastaven\u00edm p\u0159esm\u011brov\u00e1n\u00ed se ujist\u011bte, \u017ee nov\u00e9 adresy:<\/b><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>funguj\u00ed (i pod z\u00e1t\u011b\u017e\u00ed);  <\/li>\n\n\n\n<li>jsou dostupn\u00e9 i&nbsp;z Internetu, ne pouze z&nbsp;va\u0161\u00ed s\u00edt\u011b, kde web testujete;  <\/li>\n\n\n\n<li>vracej\u00ed HTTP stav 200 a&nbsp;pat\u0159i\u010dn\u00fd obsah;  <\/li>\n\n\n\n<li>neobsahuj\u00ed HTML k\u00f3d, kter\u00fd br\u00e1n\u00ed indexaci (nap\u0159. meta tag <a href=\"..\/meta-tag-robots\/\">robot noindex<\/a>, <a href=\"..\/presmerovani-url#meta_refresh\">meta refresh<\/a>);  <\/li>\n\n\n\n<li>nejsou zak\u00e1z\u00e1ny v&nbsp;nov\u00e9m robots.txt.  <\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Pokud p\u0159ed\u011bl\u00e1v\u00e1te web a&nbsp;m\u011bn\u00edte strukturu URL adres tak, \u017ee star\u00e9 str\u00e1nce odpov\u00edd\u00e1 n\u011bjak\u00e1 nov\u00e1, je dobr\u00e9 vyu\u017e\u00edt p\u0159esm\u011brov\u00e1n\u00ed. Ide\u00e1ln\u00ed stav je, kdy jedn\u00e9 star\u00e9 adrese odpov\u00edd\u00e1 jedna nov\u00e1 adresa. Pokud p\u0159esm\u011brov\u00e1n\u00ed nepou\u017eijete a&nbsp;star\u00e1 str\u00e1nka bude vracet HTTP odpov\u011b\u010f 404, bude vy\u0159azena z&nbsp;indexu. Do indexu by se sice \u010dasem dostala str\u00e1nka nov\u00e1, ale odkazy na starou [&hellip;]<\/p>\n","protected":false},"author":22,"featured_media":0,"parent":54,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"page-sidemenu","meta":{"_acf_changed":false,"_relevanssi_hide_post":"","_relevanssi_hide_content":"","_relevanssi_pin_for_all":"","_relevanssi_pin_keywords":"","_relevanssi_unpin_keywords":"","_relevanssi_related_keywords":"","_relevanssi_related_include_ids":"","_relevanssi_related_exclude_ids":"","_relevanssi_related_no_append":"","_relevanssi_related_not_related":"","_relevanssi_related_posts":"","_relevanssi_noindex_reason":"","footnotes":""},"page_category":[14],"page_tag":[],"service_status_category":[],"class_list":["post-137","page","type-page","status-publish","hentry"],"acf":[],"lang":"cs","translations":{"cs":137},"pll_sync_post":[],"_links":{"self":[{"href":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/wp-json\/wp\/v2\/pages\/137","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/wp-json\/wp\/v2\/users\/22"}],"replies":[{"embeddable":true,"href":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/wp-json\/wp\/v2\/comments?post=137"}],"version-history":[{"count":18,"href":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/wp-json\/wp\/v2\/pages\/137\/revisions"}],"predecessor-version":[{"id":1655,"href":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/wp-json\/wp\/v2\/pages\/137\/revisions\/1655"}],"up":[{"embeddable":true,"href":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/wp-json\/wp\/v2\/pages\/54"}],"wp:attachment":[{"href":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/wp-json\/wp\/v2\/media?parent=137"}],"wp:term":[{"taxonomy":"page_category","embeddable":true,"href":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/wp-json\/wp\/v2\/page_category?post=137"},{"taxonomy":"page_tag","embeddable":true,"href":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/wp-json\/wp\/v2\/page_tag?post=137"},{"taxonomy":"service_status_category","embeddable":true,"href":"https:\/\/o-seznam.cz\/napoveda\/vyhledavani\/wp-json\/wp\/v2\/service_status_category?post=137"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}