{"id":9632,"date":"2023-11-03T12:07:43","date_gmt":"2023-11-03T11:07:43","guid":{"rendered":"https:\/\/wenet.pl\/blog\/?p=9632"},"modified":"2023-11-03T12:11:20","modified_gmt":"2023-11-03T11:11:20","slug":"lazy-loading-jak-wprowadzic-je-na-stronie","status":"publish","type":"post","link":"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/","title":{"rendered":"Lazy loading \u2013 jak wprowadzi\u0107 je na stronie?"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1080\" height=\"720\" data-src=\"https:\/\/wenet.pl\/blog\/wp-content\/uploads\/2023\/11\/Blog_WeNet-\u2013-grafiki-do-artykulow-\u2013-kopia-1.jpg\" alt=\"lazy loading\" class=\"wp-image-9633 colorbox-9632 lazyload\" data-srcset=\"https:\/\/wenet.pl\/blog\/wp-content\/uploads\/2023\/11\/Blog_WeNet-\u2013-grafiki-do-artykulow-\u2013-kopia-1.jpg 1080w, https:\/\/wenet.pl\/blog\/wp-content\/uploads\/2023\/11\/Blog_WeNet-\u2013-grafiki-do-artykulow-\u2013-kopia-1-450x300.jpg 450w, https:\/\/wenet.pl\/blog\/wp-content\/uploads\/2023\/11\/Blog_WeNet-\u2013-grafiki-do-artykulow-\u2013-kopia-1-200x133.jpg 200w, https:\/\/wenet.pl\/blog\/wp-content\/uploads\/2023\/11\/Blog_WeNet-\u2013-grafiki-do-artykulow-\u2013-kopia-1-768x512.jpg 768w, https:\/\/wenet.pl\/blog\/wp-content\/uploads\/2023\/11\/Blog_WeNet-\u2013-grafiki-do-artykulow-\u2013-kopia-1-696x464.jpg 696w, https:\/\/wenet.pl\/blog\/wp-content\/uploads\/2023\/11\/Blog_WeNet-\u2013-grafiki-do-artykulow-\u2013-kopia-1-1068x712.jpg 1068w, https:\/\/wenet.pl\/blog\/wp-content\/uploads\/2023\/11\/Blog_WeNet-\u2013-grafiki-do-artykulow-\u2013-kopia-1-630x420.jpg 630w\" data-sizes=\"(max-width: 1080px) 100vw, 1080px\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" style=\"--smush-placeholder-width: 1080px; --smush-placeholder-aspect-ratio: 1080\/720;\" \/><\/figure>\n\n\n\n<p><strong>Czy zastanawiasz si\u0119 czasami, jak przyspieszy\u0107 \u0142adowanie swojej strony internetowej i jednocze\u015bnie poprawi\u0107 jej wydajno\u015b\u0107? A czy wiesz, czym jest lazy loading? W dzisiejszych czasach, gdy szybko\u015b\u0107 \u0142adowania strony ma kluczowe znaczenie dla user experience (UX), czyli do\u015bwiadczenia u\u017cytkownika, warto zwr\u00f3ci\u0107 uwag\u0119 na technik\u0119 o nazwie leniwe \u0142adowanie. W artykule om\u00f3wimy, dlaczego decydujemy si\u0119 na lazy loading i jak wprowadzi\u0107 to rozwi\u0105zanie na swojej stronie WWW. Poznamy tak\u017ce zalety i wady lazy load.<\/strong><\/p><div id=\"ez-toc-container\" class=\"ez-toc-v2_0_82_2 counter-hierarchy ez-toc-counter ez-toc-white ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Spis tre\u015bci<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Prze\u0142\u0105cznik Spisu Tre\u015bci\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #0a0a0a;color:#0a0a0a\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #0a0a0a;color:#0a0a0a\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/#Na_czym_polega_lazy_loading\" >Na czym polega lazy loading?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/#Jakie_sa_najwazniejsze_zalety_lazy_loading\" >Jakie s\u0105 najwa\u017cniejsze zalety lazy loading?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/#Lazy_loading_a_pozycjonowanie\" >Lazy loading a pozycjonowanie<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/#Google_a_lazy_loading\" >Google a lazy loading<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/#Czy_sa_wady\" >Czy s\u0105 wady?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/#Jak_zastosowac_lazy_loading_na_stronie\" >Jak zastosowa\u0107 lazy loading na stronie?<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/#Metoda_z_uzyciem_JavaScript\" >Metoda z u\u017cyciem JavaScript<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/#Metoda_serwerowa_%E2%80%93_PHP\" >Metoda serwerowa \u2013 PHP<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/#Metoda_wtyczkowa_%E2%80%93_CMS\" >Metoda wtyczkowa \u2013 CMS<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/#Czym_jest_natywny_lazy_loading\" >Czym jest natywny lazy loading?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/#Gdzie_mozna_zastosowac_leniwe_ladowanie\" >Gdzie mo\u017cna zastosowa\u0107 leniwe \u0142adowanie?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/#Lazy_loading_a_eager_loading_Jakie_sa_roznice\" >Lazy loading a eager loading. Jakie s\u0105 r\u00f3\u017cnice?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/wenet.pl\/blog\/lazy-loading-jak-wprowadzic-je-na-stronie\/#Lazy_loading_a_UX_design\" >Lazy loading a UX design<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Na_czym_polega_lazy_loading\"><\/span>Na czym polega lazy loading?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Lazy loading to technika optymalizacji \u0142adowania strony internetowej polegaj\u0105ca na op\u00f3\u017anionym wczytywaniu element\u00f3w, takich jak obrazy czy filmy, kt\u00f3re nie s\u0105 widoczne dla u\u017cytkownika od razu po wej\u015bciu na stron\u0119. Dzi\u0119ki temu <strong>czas na wst\u0119pne \u0142adowanie strony ulega skr\u00f3ceniu, a u\u017cytkownik mo\u017ce szybciej zacz\u0105\u0107 przegl\u0105da\u0107 zawarto\u015b\u0107<\/strong>. Elementy te s\u0105 wczytywane dopiero wtedy, gdy u\u017cytkownik przewija stron\u0119 i zbli\u017ca si\u0119 do nich. W praktyce oznacza to, \u017ce skrypt JavaScript odpowiedzialny za lazy loading sprawia, \u017ce obrazy czy filmy s\u0105 \u0142adowane tylko wtedy, gdy s\u0105 one potrzebne.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Jakie_sa_najwazniejsze_zalety_lazy_loading\"><\/span>Jakie s\u0105 najwa\u017cniejsze zalety lazy loading?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Wdro\u017cenie lazy loading na stronie internetowej mo\u017ce przynie\u015b\u0107 wiele korzy\u015bci. Najwa\u017cniejsze z nich to przyspieszenie \u0142adowania oraz poprawa do\u015bwiadczenia korzystania z witryny. U\u017cytkownik dzi\u0119ki lazy loading nie musi czeka\u0107 na za\u0142adowanie wszystkich element\u00f3w przed rozpocz\u0119ciem przegl\u0105dania zawarto\u015bci.<\/p>\n\n\n\n<p>Dzi\u0119ki temu <strong>szybko\u015b\u0107 wczytywania strony ulega poprawie, co wp\u0142ywa na wydajno\u015b\u0107 strony<\/strong> (website performance) oraz jej optymalizacj\u0119 (website optimization). Strona potrzebuje mniej danych do wst\u0119pnego \u0142adowania, co oznacza p\u0142ynne dzia\u0142anie nawet przy s\u0142abszym \u0142\u0105czu internetowym.<\/p>\n\n\n\n<p>Ponadto kolejn\u0105 korzy\u015bci\u0105 jest oszcz\u0119dno\u015b\u0107 transferu danych, co jest istotne zw\u0142aszcza dla os\u00f3b korzystaj\u0105cych z ograniczonych plan\u00f3w taryfowych. Im mniej danych zu\u017cywa strona, tym mniej kosztuje jej przegl\u0105danie.<\/p>\n\n\n\n<p>Dla tw\u00f3rc\u00f3w stron oznacza r\u00f3wnie\u017c prostsze zarz\u0105dzanie tre\u015bci\u0105, poniewa\u017c nie musz\u0105 martwi\u0107 si\u0119 o optymalizacj\u0119 ka\u017cdego elementu z osobna. Wystarczy zastosowa\u0107 odpowiedni\u0105 technik\u0119, aby strona dzia\u0142a\u0142a sprawnie.<\/p>\n\n\n\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-6eaba40b-8ba5-4c48-bea7-8cf6135f3b39\"><span class=\"hs-cta-node hs-cta-6eaba40b-8ba5-4c48-bea7-8cf6135f3b39\" id=\"hs-cta-6eaba40b-8ba5-4c48-bea7-8cf6135f3b39\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/hubspot-cta-redirect-eu1-prod.s3.amazonaws.com\/cta\/redirect\/25646044\/6eaba40b-8ba5-4c48-bea7-8cf6135f3b39\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"hs-cta-img colorbox-9632 lazyload\" id=\"hs-cta-img-6eaba40b-8ba5-4c48-bea7-8cf6135f3b39\" style=\"border-width:0px;\" data-src=\"https:\/\/hubspot-no-cache-eu1-prod.s3.amazonaws.com\/cta\/default\/25646044\/6eaba40b-8ba5-4c48-bea7-8cf6135f3b39.png\"  alt=\"Zam\u00f3w budow\u0119 strony!\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js-eu1.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(25646044, '6eaba40b-8ba5-4c48-bea7-8cf6135f3b39', {\"useNewLoader\":\"true\",\"region\":\"eu1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Lazy_loading_a_pozycjonowanie\"><\/span>Lazy loading a pozycjonowanie<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Jaki jest wp\u0142yw lazy load na SEO? Stosowanie lazy loading w \u015bwiecie SEO jest bardzo wa\u017cnym dzia\u0142aniem. Rozwi\u0105zanie to mo\u017ce wp\u0142yn\u0105\u0107 na pozycjonowanie (search engine optimization) strony w wynikach wyszukiwania. <strong>Wdro\u017cenie leniwego \u0142adowania sprawia, \u017ce czas wst\u0119pnego \u0142adowania jest kr\u00f3tszy<\/strong>, co jest jednym z czynnik\u00f3w branych pod uwag\u0119 przez wyszukiwark\u0119 przy ocenie witryny. Lazy loading images, czyli leniwe \u0142adowanie obraz\u00f3w, mo\u017ce wi\u0119c przyczyni\u0107 si\u0119 do poprawy pozycji w wynikach wyszukiwania.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Google_a_lazy_loading\"><\/span>Google a lazy loading<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Google docenia strony optymalizowane pod k\u0105tem szybko\u015bci \u0142adowania i mo\u017ce premiowa\u0107 je wy\u017cszym miejscem w wynikach. Warto zatem pomy\u015ble\u0107 o zastosowaniu lazy loadingu w praktyce, szczeg\u00f3lnie w przypadku stron z du\u017c\u0105 ilo\u015bci\u0105 tre\u015bci, takich jak galerie zdj\u0119\u0107 czy artyku\u0142y. Nale\u017cy jednak pami\u0119ta\u0107, \u017ce samo wprowadzenie lazy load nie wystarczy \u2013 warto r\u00f3wnie\u017c zadba\u0107 o optymalizacj\u0119 innych element\u00f3w, takich jak tre\u015b\u0107 czy struktura.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Czy_sa_wady\"><\/span>Czy s\u0105 wady?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Mimo licznych zalet leniwe \u0142adowanie ma tak\u017ce swoje wady.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Potencjalne problemy z indeksacj\u0105: niekt\u00f3re wyszukiwarki mog\u0105 mie\u0107 problemy z indeksacj\u0105 stron korzystaj\u0105cych z lazy loadingu. Dlatego warto zadba\u0107 o odpowiednie oznaczenie element\u00f3w oraz stosowa\u0107 techniki, kt\u00f3re s\u0105 przyjazne dla wyszukiwarek.<\/li>\n\n\n\n<li>Trudno\u015bci z nawigacj\u0105: u\u017cytkownicy mog\u0105 napotka\u0107 problemy z nawigacj\u0105 na stronach korzystaj\u0105cych z leniwego \u0142adowania, zw\u0142aszcza gdy przewijaj\u0105 je szybko. W takich przypadkach elementy mog\u0105 nie zd\u0105\u017cy\u0107 si\u0119 za\u0142adowa\u0107, co mo\u017ce prowadzi\u0107 do frustracji.<\/li>\n\n\n\n<li>Implementacja i utrzymanie: wdro\u017cenie lazy loadingu mo\u017ce by\u0107 skomplikowane i wymaga\u0107 wsparcia specjalist\u00f3w. Ponadto konieczne mo\u017ce by\u0107 regularne aktualizowanie technologii, aby strona dzia\u0142a\u0142a poprawnie.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Jak_zastosowac_lazy_loading_na_stronie\"><\/span>Jak zastosowa\u0107 lazy loading na stronie?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Aby zaimplementowa\u0107 lazy loading na stronie internetowej, mo\u017cna wybra\u0107 jeden z kilku sposob\u00f3w. Mo\u017cna skorzysta\u0107 z gotowych rozwi\u0105za\u0144, takich jak wtyczki do CMS-a (CMS plugins) czy skrypt\u00f3w JavaScript.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Metoda_z_uzyciem_JavaScript\"><\/span>Metoda z u\u017cyciem JavaScript<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Najbardziej popularn\u0105 metod\u0105 wprowadzenia lazy loading jest u\u017cycie j\u0119zyka programowania JavaScript. Istnieje wiele gotowych skrypt\u00f3w i bibliotek, kt\u00f3re umo\u017cliwiaj\u0105 implementacj\u0119 tej funkcji. Jednym z nich jest Intersection Observer API, kt\u00f3ry pozwala na monitorowanie element\u00f3w strony i wczytywanie ich tylko wtedy, gdy s\u0105 one widoczne dla u\u017cytkownika. Aby skorzysta\u0107 z tego rozwi\u0105zania, wystarczy doda\u0107 odpowiedni kod do pliku JavaScript na swojej stronie.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Metoda_serwerowa_%E2%80%93_PHP\"><\/span>Metoda serwerowa \u2013 PHP<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Je\u015bli twoja strona korzysta z j\u0119zyka programowania PHP, mo\u017cesz zastosowa\u0107 lazy loading na poziomie serwera. W tym celu nale\u017cy zainstalowa\u0107 odpowiedni\u0105 bibliotek\u0119, np. Image Lazy Loader, a nast\u0119pnie doda\u0107 odpowiedni kod do plik\u00f3w PHP swojej strony. Taka implementacja pozwala na oszcz\u0119dno\u015b\u0107 zasob\u00f3w serwera i zmniejszenie obci\u0105\u017cenia.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Metoda_wtyczkowa_%E2%80%93_CMS\"><\/span>Metoda wtyczkowa \u2013 CMS<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>Dla os\u00f3b korzystaj\u0105cych z system\u00f3w zarz\u0105dzania tre\u015bci\u0105 (CMS), takich jak WordPress czy Joomla, istnieje mo\u017cliwo\u015b\u0107 wprowadzenia lazy loading za pomoc\u0105 wtyczek. W przypadku WordPressa warto sprawdzi\u0107 takie rozwi\u0105zania jak a3 Lazy Load czy Lazy Load by WP Rocket. Wystarczy zainstalowa\u0107 i aktywowa\u0107 odpowiedni\u0105 wtyczk\u0119, a funkcja op\u00f3\u017anionego \u0142adowania zostanie automatycznie dodana do strony.<\/p>\n\n\n\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-941725f0-680b-4a96-8b20-8d683fb18381\"><span class=\"hs-cta-node hs-cta-941725f0-680b-4a96-8b20-8d683fb18381\" id=\"hs-cta-941725f0-680b-4a96-8b20-8d683fb18381\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/hubspot-cta-redirect-eu1-prod.s3.amazonaws.com\/cta\/redirect\/25646044\/941725f0-680b-4a96-8b20-8d683fb18381\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" class=\"hs-cta-img colorbox-9632 lazyload\" id=\"hs-cta-img-941725f0-680b-4a96-8b20-8d683fb18381\" style=\"border-width:0px;\" data-src=\"https:\/\/hubspot-no-cache-eu1-prod.s3.amazonaws.com\/cta\/default\/25646044\/941725f0-680b-4a96-8b20-8d683fb18381.png\"  alt=\"Nowe wezwanie do dzia\u0142ania\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js-eu1.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(25646044, '941725f0-680b-4a96-8b20-8d683fb18381', {\"useNewLoader\":\"true\",\"region\":\"eu1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Czym_jest_natywny_lazy_loading\"><\/span>Czym jest natywny lazy loading?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Warto wspomnie\u0107 r\u00f3wnie\u017c o natywnym lazy loading, kt\u00f3ry jest dost\u0119pny w nowoczesnych przegl\u0105darkach internetowych. Aby skorzysta\u0107 z tej funkcji, wystarczy doda\u0107 atrybut loading=lazy do tag\u00f3w obraz\u00f3w na stronie. Dzi\u0119ki temu przegl\u0105darka b\u0119dzie automatycznie op\u00f3\u017ania\u0107 \u0142adowanie obraz\u00f3w, kt\u00f3re nie s\u0105 widoczne na ekranie. To prosty spos\u00f3b na wprowadzenie leniwego \u0142adowania bez konieczno\u015bci korzystania ze skrypt\u00f3w JavaScript.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Gdzie_mozna_zastosowac_leniwe_ladowanie\"><\/span>Gdzie mo\u017cna zastosowa\u0107 leniwe \u0142adowanie?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Warto zwr\u00f3ci\u0107 uwag\u0119, \u017ce rozwi\u0105zanie to mo\u017ce by\u0107 stosowane nie tylko na stronach internetowych, ale tak\u017ce w aplikacjach webowych. W takim przypadku mo\u017cna zastosowa\u0107 technik\u0119 on-demand loading, kt\u00f3ra pozwala na \u0142adowanie tylko tych element\u00f3w aplikacji, kt\u00f3re s\u0105 aktualnie potrzebne u\u017cytkownikowi.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Lazy_loading_a_eager_loading_Jakie_sa_roznice\"><\/span>Lazy loading a eager loading. Jakie s\u0105 r\u00f3\u017cnice?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Eager loading &#8211; co to jest w\u0142a\u015bciwie? To strategia wst\u0119pnego \u0142adowania danych. W przeciwie\u0144stwie do pierwszej metody eager loading polega na wczytaniu wszystkich danych przed rozpocz\u0119ciem korzystania z aplikacji. Oznacza to, \u017ce wszystkie zwi\u0105zane obiekty s\u0105 inicjalizowane od razu, co mo\u017ce prowadzi\u0107 do wi\u0119kszego zu\u017cycia zasob\u00f3w systemowych.<\/p>\n\n\n\n<p>Eager loading ma te\u017c swoje zalety. Przede wszystkim pozwala unikn\u0105\u0107 problem\u00f3w zwi\u0105zanych ze spowolnieniem dzia\u0142ania aplikacji spowodowanym op\u00f3\u017anionym \u0142adowaniem danych. Dzi\u0119ki temu u\u017cytkownik ma natychmiastowy dost\u0119p do wszystkich potrzebnych informacji.<\/p>\n\n\n\n<p>Kiedy stosowa\u0107 loading lazy i eager w praktyce? Wyb\u00f3r zale\u017cy od specyfiki danej aplikacji oraz potrzeb u\u017cytkownik\u00f3w. Je\u015bli aplikacja przechowuje ogromne ilo\u015bci danych, kt\u00f3re nie s\u0105 konieczne dla ka\u017cdego u\u017cytkownika, warto stosowa\u0107 lazy loading. Dzi\u0119ki temu mo\u017cna unikn\u0105\u0107 przeci\u0105\u017cenia serwera oraz poprawi\u0107 wydajno\u015b\u0107 aplikacji.<\/p>\n\n\n\n<p>Z kolei, je\u015bli aplikacja wymaga szybkiego dost\u0119pu do danych, eager loading mo\u017ce okaza\u0107 si\u0119 lepszym rozwi\u0105zaniem. Warto jednak pami\u0119ta\u0107, \u017ce strategia ta mo\u017ce prowadzi\u0107 do wi\u0119kszego zu\u017cycia zasob\u00f3w systemowych oraz obci\u0105\u017cenia serwera.<\/p>\n\n\n\n<p>W praktyce cz\u0119sto stosuje si\u0119 po\u0142\u0105czenie obu rozwi\u0105za\u0144, co pozwala na osi\u0105gni\u0119cie najlepszych rezultat\u00f3w. Na przyk\u0142ad, <strong>mo\u017cna zastosowa\u0107 lazy loading dla danych, kt\u00f3re nie s\u0105 kluczowe dla dzia\u0142ania aplikacji<\/strong>, a eager loading dla tych, kt\u00f3re s\u0105 tylko niezb\u0119dne dla jej prawid\u0142owego funkcjonowania.<\/p>\n\n\n\n<p>Zar\u00f3wno jedna, jak i druga opcja, ma swoje zalety i wady. Kluczem do sukcesu jest zrozumienie specyfiki danej aplikacji oraz potrzeb u\u017cytkownik\u00f3w, co pozwoli na wybranie odpowiedniej strategii. W ten spos\u00f3b mo\u017cna wp\u0142yn\u0105\u0107 na przyspieszenie strony internetowej, zoptymalizowa\u0107 dzia\u0142anie aplikacji oraz zapewni\u0107 jej wysok\u0105 wydajno\u015b\u0107 i responsywno\u015b\u0107.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Lazy_loading_a_UX_design\"><\/span>Lazy loading a UX design<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Warto zaznaczy\u0107, \u017ce lazy loading nie wp\u0142ywa negatywnie na dzia\u0142anie UX design. Wr\u0119cz przeciwnie, dzi\u0119ki szybszemu wczytywaniu strony u\u017cytkownicy mog\u0105 cieszy\u0107 si\u0119 lepszym do\u015bwiadczeniem podczas korzystania z niej. Warto jednak pami\u0119ta\u0107 o tym, aby lazy loading by\u0142 odpowiednio zaimplementowany i dostosowany do potrzeb u\u017cytkownik\u00f3w.<\/p>\n\n\n\n<p>Podsumowuj\u0105c, korzy\u015bci z lazy loading s\u0105 zar\u00f3wno dla u\u017cytkownik\u00f3w, jak i w\u0142a\u015bcicieli stron. Szybka strona internetowa wp\u0142ywa na popraw\u0119 user experience oraz dzia\u0142ania SEO, czyli pozycjonowanie w wynikach wyszukiwania. Warto wi\u0119c rozwa\u017cy\u0107 praktyczne zastosowanie lazy loading na swojej witrynie lub aplikacji webowej. Postaw na lazy loading, aby cieszy\u0107 si\u0119 szybszym i bardziej wydajnym dzia\u0142aniem.<\/p><div class=\"jnyvx69f2cc47373cd\" ><!-- Komunikacja z klientem -->\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-8265bd58-ea47-4c6a-9f25-dd290dd6f8c8\"><span class=\"hs-cta-node hs-cta-8265bd58-ea47-4c6a-9f25-dd290dd6f8c8\" id=\"hs-cta-8265bd58-ea47-4c6a-9f25-dd290dd6f8c8\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/hubspot-cta-redirect-eu1-prod.s3.amazonaws.com\/cta\/redirect\/25646044\/8265bd58-ea47-4c6a-9f25-dd290dd6f8c8\" target=\"_blank\" rel=\"noopener\"><img class=\"hs-cta-img colorbox-9632 lazyload\" id=\"hs-cta-img-8265bd58-ea47-4c6a-9f25-dd290dd6f8c8\" style=\"border-width:0px;\" data-src=\"https:\/\/hubspot-no-cache-eu1-prod.s3.amazonaws.com\/cta\/default\/25646044\/8265bd58-ea47-4c6a-9f25-dd290dd6f8c8.png\"  alt=\"Nowe wezwanie do dzia\u0142ania\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js-eu1.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(25646044, '8265bd58-ea47-4c6a-9f25-dd290dd6f8c8', {\"useNewLoader\":\"true\",\"region\":\"eu1\"}); 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<\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n<\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.gvpku69f2cc4735819 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.gvpku69f2cc4735819 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.gvpku69f2cc4735819 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.gvpku69f2cc4735819 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.gvpku69f2cc4735819 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"nkcjm69f2cc4735773\" ><!-- Video -->\n\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-d5317067-b35b-4752-8a1e-3ef0d70566f6\"><span class=\"hs-cta-node hs-cta-d5317067-b35b-4752-8a1e-3ef0d70566f6\" id=\"hs-cta-d5317067-b35b-4752-8a1e-3ef0d70566f6\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/hubspot-cta-redirect-eu1-prod.s3.amazonaws.com\/cta\/redirect\/25646044\/d5317067-b35b-4752-8a1e-3ef0d70566f6\" target=\"_blank\" rel=\"noopener\"><img class=\"hs-cta-img colorbox-9632 lazyload\" id=\"hs-cta-img-d5317067-b35b-4752-8a1e-3ef0d70566f6\" style=\"border-width:0px;\" data-src=\"https:\/\/hubspot-no-cache-eu1-prod.s3.amazonaws.com\/cta\/default\/25646044\/d5317067-b35b-4752-8a1e-3ef0d70566f6.png\"  alt=\"e-book 18 wskaz\u00f3wek, kt\u00f3re rozwin\u0105 Tw\u00f3j kana\u0142 na YouTube\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js-eu1.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(25646044, 'd5317067-b35b-4752-8a1e-3ef0d70566f6', {\"useNewLoader\":\"true\",\"region\":\"eu1\"}); 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<\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n<\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.clqvm69f2cc47356fd {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.clqvm69f2cc47356fd {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.clqvm69f2cc47356fd {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.clqvm69f2cc47356fd {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.clqvm69f2cc47356fd {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"ghbty69f2cc4735685\" ><!-- Strategia marketingowa -->\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-9d4aa58d-1ab7-4301-b000-ac3d639abc98\"><span class=\"hs-cta-node hs-cta-9d4aa58d-1ab7-4301-b000-ac3d639abc98\" id=\"hs-cta-9d4aa58d-1ab7-4301-b000-ac3d639abc98\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/hubspot-cta-redirect-eu1-prod.s3.amazonaws.com\/cta\/redirect\/25646044\/9d4aa58d-1ab7-4301-b000-ac3d639abc98\" target=\"_blank\" rel=\"noopener\"><img class=\"hs-cta-img colorbox-9632 lazyload\" id=\"hs-cta-img-9d4aa58d-1ab7-4301-b000-ac3d639abc98\" style=\"border-width:0px;\" data-src=\"https:\/\/hubspot-no-cache-eu1-prod.s3.amazonaws.com\/cta\/default\/25646044\/9d4aa58d-1ab7-4301-b000-ac3d639abc98.png\"  alt=\"Nowe wezwanie do dzia\u0142ania\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js-eu1.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(25646044, '9d4aa58d-1ab7-4301-b000-ac3d639abc98', {\"useNewLoader\":\"true\",\"region\":\"eu1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n<\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.ghbty69f2cc4735685 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.ghbty69f2cc4735685 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.ghbty69f2cc4735685 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.ghbty69f2cc4735685 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.ghbty69f2cc4735685 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"jvynl69f2cc473560a\" ><!-- Social Media -->\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-387c3571-1376-4b17-bb02-3ee7c0d54013\"><span class=\"hs-cta-node hs-cta-387c3571-1376-4b17-bb02-3ee7c0d54013\" id=\"hs-cta-387c3571-1376-4b17-bb02-3ee7c0d54013\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/hubspot-cta-redirect-eu1-prod.s3.amazonaws.com\/cta\/redirect\/25646044\/387c3571-1376-4b17-bb02-3ee7c0d54013\" target=\"_blank\" rel=\"noopener\"><img class=\"hs-cta-img colorbox-9632 lazyload\" id=\"hs-cta-img-387c3571-1376-4b17-bb02-3ee7c0d54013\" style=\"border-width:0px;\" data-src=\"https:\/\/hubspot-no-cache-eu1-prod.s3.amazonaws.com\/cta\/default\/25646044\/387c3571-1376-4b17-bb02-3ee7c0d54013.png\"  alt=\"Nowe wezwanie do dzia\u0142ania\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js-eu1.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(25646044, '387c3571-1376-4b17-bb02-3ee7c0d54013', {\"useNewLoader\":\"true\",\"region\":\"eu1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n<\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.jvynl69f2cc473560a {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.jvynl69f2cc473560a {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.jvynl69f2cc473560a {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.jvynl69f2cc473560a {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.jvynl69f2cc473560a {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"ycdxj69f2cc473555e\" ><!-- Copywriting -->\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-0d4fb5f3-b88d-4456-a7be-207e7a27d1d8\"><span class=\"hs-cta-node hs-cta-0d4fb5f3-b88d-4456-a7be-207e7a27d1d8\" id=\"hs-cta-0d4fb5f3-b88d-4456-a7be-207e7a27d1d8\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/hubspot-cta-redirect-eu1-prod.s3.amazonaws.com\/cta\/redirect\/25646044\/0d4fb5f3-b88d-4456-a7be-207e7a27d1d8\" target=\"_blank\" rel=\"noopener, nofollow\"><img class=\"hs-cta-img colorbox-9632 lazyload\" id=\"hs-cta-img-0d4fb5f3-b88d-4456-a7be-207e7a27d1d8\" style=\"border-width:0px;\" data-src=\"https:\/\/hubspot-no-cache-eu1-prod.s3.amazonaws.com\/cta\/default\/25646044\/0d4fb5f3-b88d-4456-a7be-207e7a27d1d8.png\"  alt=\"e-book Jak tworzy\u0107 tre\u015bci, kt\u00f3re przyci\u0105gn\u0105 Twoich klient\u00f3w\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js-eu1.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(25646044, '0d4fb5f3-b88d-4456-a7be-207e7a27d1d8', {\"useNewLoader\":\"true\",\"region\":\"eu1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n<\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.ycdxj69f2cc473555e {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.ycdxj69f2cc473555e {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.ycdxj69f2cc473555e {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.ycdxj69f2cc473555e {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.ycdxj69f2cc473555e {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"ikjiu69f2cc47345c1\" ><!-- SEO1 -->\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-2e440e3a-91d6-4b6d-8268-289ea3a8329b\"><span class=\"hs-cta-node hs-cta-2e440e3a-91d6-4b6d-8268-289ea3a8329b\" id=\"hs-cta-2e440e3a-91d6-4b6d-8268-289ea3a8329b\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/hubspot-cta-redirect-eu1-prod.s3.amazonaws.com\/cta\/redirect\/25646044\/2e440e3a-91d6-4b6d-8268-289ea3a8329b\" target=\"_blank\" rel=\"noopener\"><img class=\"hs-cta-img colorbox-9632 lazyload\" id=\"hs-cta-img-2e440e3a-91d6-4b6d-8268-289ea3a8329b\" style=\"border-width:0px;\" data-src=\"https:\/\/hubspot-no-cache-eu1-prod.s3.amazonaws.com\/cta\/default\/25646044\/2e440e3a-91d6-4b6d-8268-289ea3a8329b.png\"  alt=\"e-book SEO lokalne od A do Z\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js-eu1.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(25646044, '2e440e3a-91d6-4b6d-8268-289ea3a8329b', {\"useNewLoader\":\"true\",\"region\":\"eu1\"}); <\/script><\/span><!-- end HubSpot Call-to-Action Code -->\n<\/div><style type=\"text\/css\">\r\n@media screen and (min-width: 1201px) {\r\n.ikjiu69f2cc47345c1 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 993px) and (max-width: 1200px) {\r\n.ikjiu69f2cc47345c1 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 769px) and (max-width: 992px) {\r\n.ikjiu69f2cc47345c1 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (min-width: 768px) and (max-width: 768px) {\r\n.ikjiu69f2cc47345c1 {\r\ndisplay: block;\r\n}\r\n}\r\n@media screen and (max-width: 767px) {\r\n.ikjiu69f2cc47345c1 {\r\ndisplay: block;\r\n}\r\n}\r\n<\/style>\r\n<div class=\"uwcpg69f2cc4732b3d\" ><!-- SEM -->\n<!--HubSpot Call-to-Action Code --><span class=\"hs-cta-wrapper\" id=\"hs-cta-wrapper-f76cfdbf-3591-4dda-828b-092125eedb42\"><span class=\"hs-cta-node hs-cta-f76cfdbf-3591-4dda-828b-092125eedb42\" id=\"hs-cta-f76cfdbf-3591-4dda-828b-092125eedb42\"><!--[if lte IE 8]><div id=\"hs-cta-ie-element\"><\/div><![endif]--><a href=\"https:\/\/hubspot-cta-redirect-eu1-prod.s3.amazonaws.com\/cta\/redirect\/25646044\/f76cfdbf-3591-4dda-828b-092125eedb42\" target=\"_blank\" rel=\"noopener\"><img class=\"hs-cta-img colorbox-9632 lazyload\" id=\"hs-cta-img-f76cfdbf-3591-4dda-828b-092125eedb42\" style=\"border-width:0px;\" data-src=\"https:\/\/hubspot-no-cache-eu1-prod.s3.amazonaws.com\/cta\/default\/25646044\/f76cfdbf-3591-4dda-828b-092125eedb42.png\"  alt=\"e-book Jak promowa\u0107 firm\u0119 na lokalnym rynku\" src=\"data:image\/svg+xml;base64,PHN2ZyB3aWR0aD0iMSIgaGVpZ2h0PSIxIiB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciPjwvc3ZnPg==\" \/><\/a><\/span><script charset=\"utf-8\" src=\"https:\/\/js-eu1.hscta.net\/cta\/current.js\"><\/script><script type=\"text\/javascript\"> hbspt.cta.load(25646044, 'f76cfdbf-3591-4dda-828b-092125eedb42', {\"useNewLoader\":\"true\",\"region\":\"eu1\"}); 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A czy wiesz, czym jest lazy loading? W dzisiejszych czasach, gdy szybko\u015b\u0107 \u0142adowania strony ma kluczowe znaczenie dla user experience (UX), czyli do\u015bwiadczenia u\u017cytkownika, warto zwr\u00f3ci\u0107 uwag\u0119 na technik\u0119 o nazwie leniwe \u0142adowanie. 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