{"id":36687,"date":"2026-04-20T13:40:27","date_gmt":"2026-04-20T11:40:27","guid":{"rendered":"https:\/\/madwise.si\/blog\/?p=36687"},"modified":"2026-03-31T15:31:10","modified_gmt":"2026-03-31T13:31:10","slug":"optimizacija-slik-wordpress","status":"publish","type":"post","link":"https:\/\/madwise.si\/blog\/optimizacija-slik-wordpress\/","title":{"rendered":"Optimizacija slik na WordPress spletnih straneh"},"content":{"rendered":"\n<p>Slike so pomemben del vsake spletne strani, ampak ravno zaradi njih se stran pogosto <strong>nalaga prepo\u010dasi<\/strong>. \u010ce je optimizacija slik premi\u0161ljena, je rezultat dvojen: <strong>stran deluje hitreje<\/strong>, poleg tega pa se na Googlu bolje uvr\u0161\u010da.<\/p>\n\n\n\n<p>Urejanje slik ni nekaj dodatnega ali nepotrebnega. Je <strong>osnovna stvar pri postavitvi spletne strani<\/strong>, ki prinese obiskovalce in konverzije.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Neoptimizirane slike upo\u010dasnijo WordPress stran in poslab\u0161ajo uvrstitev v Googlu<\/h2>\n\n\n\n<p>Na povpre\u010dni spletni strani slike zavzamejo <strong>ve\u010d kot 40\u00a0% celotne velikosti datotek<\/strong>. \u010ce so prevelike, se stran nalaga po\u010dasneje, obiskovalci pa jo pogosto zapustijo, <strong>\u0161e preden sploh pridejo do vsebine<\/strong>. <\/p>\n\n\n\n<p>Po <a href=\"https:\/\/10web.io\/blog\/best-wordpress-image-optimizers\" target=\"_blank\" rel=\"noreferrer noopener\">analizi portala 10Web<\/a> prav slike najbolj obremenijo stran in so najpogostej\u0161i razlog za slab\u0161e metrike Core Web Vitals.<\/p>\n\n\n\n<p><a href=\"https:\/\/madwise.si\/blog\/core-web-vitals-optimizacija-za-google\/\" target=\"_blank\" rel=\"noreferrer noopener\">Metrike Core Web Vitals<\/a> jasno poka\u017eejo, kako pomembna je hitrost nalaganja. Slike, ki se nalagajo prepo\u010dasi, poslab\u0161ajo <strong>LCP (Largest Contentful Paint)<\/strong>.<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>Ena konkretna razlika: JPEG slika, velika 3\u00a0MB, se prika\u017ee ve\u010d kot sekundo po\u010dasneje kot WebP razli\u010dica s 350\u00a0KB.<\/p>\n<\/blockquote>\n\n\n\n<p><a href=\"https:\/\/developers.google.com\/speed\/webp\/docs\/webp_study\" target=\"_blank\" rel=\"noreferrer noopener\">Google v svoji raziskavi<\/a> potrjuje, da <strong>WebP<\/strong> v povpre\u010dju <strong>zmanj\u0161a velikost slik za 25\u201334&nbsp;%<\/strong>, brez opazne izgube kakovosti.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Optimizacija slik v WordPress medijski knji\u017enici<\/h2>\n\n\n\n<p>Optimizacija slik se za\u010dne \u017ee pri nalaganju. V <strong>Media Library<\/strong> dodamo slike v tak\u0161ni velikosti, kot jih bomo dejansko uporabili. \u010ce imamo fotografijo iz telefona v velikosti 4000 \u00d7 3000 px, jo predhodno <strong>obre\u017eemo na najve\u010d 1600 px \u0161irine<\/strong>, \u010de bo namenjena kot vizual za blog.<\/p>\n\n\n\n<p>WordPress sam ustvari ve\u010d razli\u010dic slike in doda <code>srcset<\/code> ter <code>sizes<\/code>. Tako lahko brskalnik sam izbere najbolj primerno lo\u010dljivost glede na velikost zaslona. A to deluje le, \u010de <strong>izvorna slika ni prevelika<\/strong> \u017ee na za\u010detku.<\/p>\n\n\n\n<p>Vedno dodamo \u0161e <code>width<\/code> in <code>height<\/code>, kar pomaga prepre\u010diti premike vsebine med nalaganjem (CLS). <\/p>\n\n\n\n<p>Tudi <strong>ime datoteke naj bo opisno<\/strong>, na primer \u2018optimizacija-slik-wordpress.webp\u2019, ne pa \u2018IMG_1234.webp\u2019.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/dimenzije-slik-wordpress-1024x576.webp\" alt=\"Prilagojene dimenzije slik v WordPress medijski knji\u017enici\" class=\"wp-image-36702\" srcset=\"https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/dimenzije-slik-wordpress-1024x576.webp 1024w, https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/dimenzije-slik-wordpress-300x169.webp 300w, https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/dimenzije-slik-wordpress-768x432.webp 768w, https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/dimenzije-slik-wordpress-1536x864.webp 1536w, https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/dimenzije-slik-wordpress-1568x882.webp 1568w, https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/dimenzije-slik-wordpress.webp 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Slike nalo\u017eite v dejanski velikosti prikaza, ne ve\u010djih.<\/figcaption><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Optimizacija slik: alt besedilo, ime datoteke in napis<\/h3>\n\n\n\n<p>Alt besedilo je <strong>osnovna informacija<\/strong>, ki pomaga bralnikom zaslona razumeti vsebino slike in hkrati izbolj\u0161a razumevanje strani za iskalnike. Namesto splo\u0161nih oznak raje napi\u0161emo <strong>to\u010dno, kaj je na sliki<\/strong> \u2013 na primer: \u2018primerjava jpeg in webp hitrosti nalaganja\u2019.<\/p>\n\n\n\n<p>Tudi ime datoteke naj bo smiselno. \u010ce slika prikazuje rezultate SEO testa, <strong>naj bo to razvidno \u017ee iz imena<\/strong>, na primer: <code>seo-test-rezultati-velikost-slike.webp<\/code>.<\/p>\n\n\n\n<p>Napis pod sliko dodamo, kadar \u017eelimo <strong>gledalcu ponuditi dodatno razlago<\/strong> \u2013 \u0161e posebej pri grafih, tabelah ali kadar slika potrebuje kraj\u0161i komentar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Formati in kompresija slik za sodobne strani<\/h2>\n\n\n\n<p><strong>JPEG<\/strong> in <strong>PNG<\/strong> sta bila dolgo standard, a danes sta <strong>pogosto prevelika za splet<\/strong>. Format <strong>WebP<\/strong> v povpre\u010dju <strong>zmanj\u0161a velikost slike za 25\u201335&nbsp;%<\/strong>, ne da bi izgubili na kakovosti. <strong>AVIF<\/strong> gre \u0161e dlje in je posebej uporaben tam, kjer je slik veliko \u2013 na primer v galerijah ali spletnih trgovinah.<\/p>\n\n\n\n<p>PNG naj ostane le tam, kjer <strong>res potrebujemo prosojnost<\/strong>, druga\u010de je bolj smiselna uporaba modernej\u0161ih formatov.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Format<\/th><th>Povpre\u010dno zmanj\u0161anje velikosti<\/th><th>Kdaj uporabiti<\/th><th>Slabosti<\/th><\/tr><\/thead><tbody><tr><td>JPEG<\/td><td>0\u201320&nbsp;%<\/td><td>fotografije, ve\u010d barv<\/td><td>izguba kakovosti pri stiskanju<\/td><\/tr><tr><td>PNG<\/td><td>minimalno<\/td><td>grafike s prosojnostjo<\/td><td>velika velikost datotek<\/td><\/tr><tr><td>WebP<\/td><td>25\u201335&nbsp;% (<a href=\"https:\/\/cloudinary.com\/guides\/image-formats\/jpeg-vs-webp\" target=\"_blank\" rel=\"noreferrer noopener\">cloudinary.com<\/a>)<\/td><td>ve\u010dina primerov, tudi e-trgovina<\/td><td>omejena podpora v starej\u0161ih brskalnikih<\/td><\/tr><tr><td>AVIF<\/td><td>30\u201350&nbsp;% (<a href=\"https:\/\/www.digidop.com\/blog\/website-image-sizes-formats-to-respect\" target=\"_blank\" rel=\"noreferrer noopener\">digidop.com<\/a>)<\/td><td>galerije, ve\u010dje zbirke slik<\/td><td>ve\u010dja obremenitev pri pretvorbi<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Katera orodja za stiskanje so najbolj\u0161a<\/h3>\n\n\n\n<p>Za stiskanje slik uporabimo orodja, kot so <strong>TinyPNG, ShortPixel ali Imagify<\/strong>. Pomembno je, da najprej <strong>zmanj\u0161amo dimenzijo slike<\/strong>, \u0161ele nato jo stisnemo. \u010ce se fotografija velikosti 4000 \u00d7 3000 px prikazuje v \u0161irini 1200 px, gre za <strong>nepotrebno potrato prostora in hitrosti<\/strong>.<\/p>\n\n\n\n<p>Praksa: sliko izdelka shranimo v <strong>WebP formatu<\/strong>, s <strong>\u0161irino 1000 px<\/strong> in velikostjo <strong>pod 100&nbsp;KB<\/strong>. S tem se \u010das nalaganja ob\u010dutno skraj\u0161a. <\/p>\n\n\n\n<p>Po <a href=\"https:\/\/www.digidop.com\/blog\/website-image-sizes-formats-to-respect\" target=\"_blank\" rel=\"noreferrer noopener\">podatkih Digidop<\/a> pravilno dimenzioniranje slik neposredno <strong>zmanj\u0161a obremenitev stre\u017enika<\/strong> in <strong>pospe\u0161i nalaganje strani<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Lazy loading in prioriteta hero slike<\/h2>\n\n\n\n<p>WordPress privzeto doda <code>loading=\"lazy\"<\/code> vsem slikam. To je koristno za galerije, blog objave in spodnje dele strani. Vendar hero slika na vrhu potrebuje druga\u010den pristop.<\/p>\n\n\n\n<p>Za <strong>hero sliko<\/strong> izklopimo lazy loading in dodamo <code>fetchpriority=\"high\"<\/code>. Tako se nalo\u017ei prva in zagotovi dober LCP rezultat. Preload uporabimo le za to eno sliko. \u010ce jih dodamo ve\u010d, u\u010dinka ni in le pove\u010damo obremenitev.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/hero-slika-lazy-loading-optimizacija-1024x576.webp\" alt=\"Lazy loading in prioriteta hero slike v WordPressu\" class=\"wp-image-36703\" srcset=\"https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/hero-slika-lazy-loading-optimizacija-1024x576.webp 1024w, https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/hero-slika-lazy-loading-optimizacija-300x169.webp 300w, https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/hero-slika-lazy-loading-optimizacija-768x432.webp 768w, https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/hero-slika-lazy-loading-optimizacija-1536x864.webp 1536w, https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/hero-slika-lazy-loading-optimizacija-1568x882.webp 1568w, https:\/\/madwise.si\/blog\/wp-content\/uploads\/2025\/09\/hero-slika-lazy-loading-optimizacija.webp 1600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Hero sliko nastavite na fetchpriority=&#8221;high&#8221;, ostale pa naj imajo lazy loading.<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Kako preverimo, ali je optimizacija slik uspela<\/h2>\n\n\n\n<p>Ko uredimo slike, <strong>rezultate vedno preverimo<\/strong>. V orodju Google PageSpeed Insights poi\u0161\u010demo priporo\u010dila, kot sta \u2018Serve images in next-gen formats\u2019 in \u2018Properly size images\u2019. \u010ce se ta opozorila \u0161e vedno pojavljajo, so slike verjetno <strong>prevelike ali v neprimernem formatu<\/strong>.<\/p>\n\n\n\n<p>Za bolj podroben vpogled uporabimo <strong>WebPageTest<\/strong>, ki poka\u017ee, katere slike so najbolj problemati\u010dne in koliko <strong>dejanskega \u010dasa nalaganja porabijo<\/strong>.<\/p>\n\n\n\n<p>Tako hitro vidimo, ali optimizacija slik res izbolj\u0161uje Core Web Vitals. In \u010de je odziv dober, to pomeni tudi <strong>vi\u0161jo uvrstitev v iskalnikih<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Kaj sledi, ko to zaklju\u010dite<\/h2>\n\n\n\n<p>Optimizacija slik je le <strong>en del celotne zgodbe<\/strong>. \u010ce \u017eelite razumeti, kako se izogniti najpogostej\u0161im SEO napakam, preverite prispevek \u2018<a href=\"https:\/\/madwise.si\/blog\/optimizacija-spletnih-strani-seo-2025\/\" target=\"_blank\" rel=\"noreferrer noopener\">Optimizacija spletnih strani SEO v letu 2025<\/a>\u2019.<\/p>\n\n\n\n<p>\u010ce \u017eelite konkretno oceno, kaj na va\u0161i strani <strong>dejansko zavira rast<\/strong>, se oglasite pri nas. Pri Madwise <strong>ne i\u0161\u010demo bli\u017enjic<\/strong> \u2013 delamo premi\u0161ljeno in ciljno. Re\u0161itve, ki jih predlagamo, se poznajo pri hitrosti nalaganja, bolj\u0161em SEO in vi\u0161ji konverziji. <\/p>\n\n\n\n<p>Pi\u0161ite nam na <a href=\"mailto:zivjo@madwise.si\" target=\"_blank\" rel=\"noreferrer noopener\">zivjo@madwise.si<\/a> ali nas pokli\u010dite na <a href=\"tel:+386 31 370 639\" target=\"_blank\" rel=\"noreferrer noopener\">+386 31 370 639<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Optimizacija slik v WordPress je eden najhitrej\u0161ih na\u010dinov za bolj\u0161e SEO rezultate in hitrej\u0161e nalaganje strani. V prispevku poka\u017eemo konkretne razlike med formati, prakti\u010dne primere stiskanja ter nastavitve, ki izbolj\u0161ajo Core Web Vitals. \u010ce \u017eelite preverjene postopke, je to obvezno branje.<\/p>\n","protected":false},"author":45,"featured_media":36701,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[18],"tags":[],"class_list":["post-36687","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-optimizacija-spletnih-strani-seo","entry"],"acf":{"izpostavljen_vodic_shortcode":"","drugi_del_vsebine":"","onemogoci_kazalo":false,"alternate_povezava":""},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Optimizacija slik na WordPress spletnih straneh<\/title>\n<meta name=\"description\" content=\"Optimizacija slik poskrbi za hitrej\u0161e nalaganje, bolj\u0161o izku\u0161njo uporabnika in vi\u0161je uvrstitve strani na Googlu. 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