[{"data":1,"prerenderedAt":1316},["ShallowReactive",2],{"blog-how-to-fix-cls":3},{"id":4,"title":5,"author":6,"authorSlug":7,"body":8,"date":1306,"description":1307,"extension":1308,"faq":7,"featured":1309,"image":1310,"meta":1311,"navigation":616,"path":1312,"readTime":7,"seo":1313,"stem":1314,"tags":7,"__hash__":1315},"blog\u002Fblog\u002Fhow-to-fix-cls.md","How to Fix CLS in E-Commerce Galleries and Carousels","Epicmax Team",null,{"type":9,"value":10,"toc":1287},"minimark",[11,15,27,34,50,67,72,75,80,83,86,89,92,95,98,102,140,144,149,154,220,225,292,297,359,364,438,444,448,547,550,554,559,645,650,684,688,692,727,731,802,806,811,851,855,913,917,985,989,1017,1021,1027,1041,1045,1048,1074,1077,1081,1084,1119,1123,1126,1150,1155,1169,1174,1177,1182,1196,1203,1207,1210,1215,1218,1221,1224,1227,1230,1234,1244,1247,1260,1263,1278,1283],[12,13,14],"p",{},"Image galleries are often the centerpiece of an e-commerce product page — sleek, interactive, and visually engaging.",[12,16,17,18,22,23,26],{},"But they also hide a major performance trap: they’re among the leading causes of ",[19,20,21],"strong",{},"Cumulative Layout Shift (CLS)"," — a key ",[19,24,25],{},"Core Web Vital"," that directly impacts user experience, SEO rankings, and conversion rates.",[12,28,29,30,33],{},"💡 ",[19,31,32],{},"In short:"," CLS measures unexpected layout movements during page load. When images push or shift content around, it not only frustrates users — it can also cost your business trust and sales.",[12,35,36,37,43,44,49],{},"This comprehensive guide explains how to fix ",[38,39,21],"a",{"href":40,"rel":41},"https:\u002F\u002Fweb.dev\u002Farticles\u002Fcls",[42],"nofollow"," issues in image galleries and improve your website’s ",[38,45,48],{"href":46,"rel":47},"https:\u002F\u002Fweb.dev\u002Farticles\u002Fvitals",[42],"Core Web Vitals",".",[12,51,52,53,58,59,66],{},"Created by ",[38,54,57],{"href":55,"rel":56},"https:\u002F\u002Fepicmax.co",[42],"Epicmax"," — a ",[19,60,61],{},[38,62,65],{"href":63,"rel":64},"https:\u002F\u002Fepicmax.co\u002F",[42],"Vue.js development company"," specializing in performance, scalability, and Core Web Vitals optimization.",[68,69,71],"h2",{"id":70},"why-galleries-are-cls-hotspots","😬 Why Galleries Are CLS Hotspots",[12,73,74],{},"Image galleries are interactive, media-heavy, and frequently rendered via JavaScript — making them prone to layout instability.",[12,76,77],{},[19,78,79],{},"Common issues include:",[12,81,82],{},"📷 Multiple high-res images with inconsistent sizes",[12,84,85],{},"🎠 JS-heavy carousels initialized after load",[12,87,88],{},"💭 Lazy-loaded media without placeholders",[12,90,91],{},"🔍 Hover-based zoom or overlays",[12,93,94],{},"⚙️ Late-rendered Vue components in SPAs",[12,96,97],{},"❗ Even small layout shifts can push CTAs, prices, or descriptions out of place, damaging trust and usability.",[68,99,101],{"id":100},"️-common-cls-causes-in-image-galleries","⚠️ Common CLS Causes in Image Galleries",[103,104,105,112,118,128,134],"ol",{},[106,107,108,111],"li",{},[19,109,110],{},"Missing Image Dimensions"," - Without width, height, or aspect-ratio, no space is reserved.",[106,113,114,117],{},[19,115,116],{},"Lazy Loading Without Placeholder"," - No pre-allocated space = sudden pop-ins during scroll.",[106,119,120,127],{},[19,121,122],{},[38,123,126],{"href":124,"rel":125},"https:\u002F\u002Fweb.dev\u002Fcls\u002F#unsized-content",[42],"Carousels"," That Inject DOM After Load - JS libraries render content late, shifting layout.",[106,129,130,133],{},[19,131,132],{},"Animations That Move Layout"," - Modifying margin, top, or position causes shifts.",[106,135,136,139],{},[19,137,138],{},"Dynamic UI Near the Gallery"," - Stock alerts, banners, or popups push content unexpectedly.",[68,141,143],{"id":142},"️-fixes-for-cls-in-image-galleries","🛠️ Fixes for CLS in Image Galleries",[145,146,148],"h3",{"id":147},"_1-reserve-space-with-dimensions-or-aspect-ratios","1. ✅ Reserve Space with Dimensions or Aspect Ratios",[12,150,151],{},[19,152,153],{},"❌ Bad:",[155,156,161],"pre",{"className":157,"code":158,"language":159,"meta":160,"style":160},"language-html shiki shiki-themes material-theme-lighter material-theme material-theme-palenight","\u003Cimg src=\"shoe.jpg\" alt=\"Red shoe\" loading=\"lazy\">\n","html","",[162,163,164],"code",{"__ignoreMap":160},[165,166,169,173,177,181,184,187,191,193,196,198,200,203,205,208,210,212,215,217],"span",{"class":167,"line":168},"line",1,[165,170,172],{"class":171},"sMK4o","\u003C",[165,174,176],{"class":175},"swJcz","img",[165,178,180],{"class":179},"spNyl"," src",[165,182,183],{"class":171},"=",[165,185,186],{"class":171},"\"",[165,188,190],{"class":189},"sfazB","shoe.jpg",[165,192,186],{"class":171},[165,194,195],{"class":179}," alt",[165,197,183],{"class":171},[165,199,186],{"class":171},[165,201,202],{"class":189},"Red shoe",[165,204,186],{"class":171},[165,206,207],{"class":179}," loading",[165,209,183],{"class":171},[165,211,186],{"class":171},[165,213,214],{"class":189},"lazy",[165,216,186],{"class":171},[165,218,219],{"class":171},">\n",[12,221,222],{},[19,223,224],{},"✅ Good:",[155,226,228],{"className":157,"code":227,"language":159,"meta":160,"style":160},"\u003Cimg src=\"shoe.jpg\" width=\"300\" height=\"400\" loading=\"lazy\" alt=\"Red shoe\">\n",[162,229,230],{"__ignoreMap":160},[165,231,232,234,236,238,240,242,244,246,249,251,253,256,258,261,263,265,268,270,272,274,276,278,280,282,284,286,288,290],{"class":167,"line":168},[165,233,172],{"class":171},[165,235,176],{"class":175},[165,237,180],{"class":179},[165,239,183],{"class":171},[165,241,186],{"class":171},[165,243,190],{"class":189},[165,245,186],{"class":171},[165,247,248],{"class":179}," width",[165,250,183],{"class":171},[165,252,186],{"class":171},[165,254,255],{"class":189},"300",[165,257,186],{"class":171},[165,259,260],{"class":179}," height",[165,262,183],{"class":171},[165,264,186],{"class":171},[165,266,267],{"class":189},"400",[165,269,186],{"class":171},[165,271,207],{"class":179},[165,273,183],{"class":171},[165,275,186],{"class":171},[165,277,214],{"class":189},[165,279,186],{"class":171},[165,281,195],{"class":179},[165,283,183],{"class":171},[165,285,186],{"class":171},[165,287,202],{"class":189},[165,289,186],{"class":171},[165,291,219],{"class":171},[12,293,294],{},[19,295,296],{},"✅ Vue Example:",[155,298,300],{"className":157,"code":299,"language":159,"meta":160,"style":160},"\u003Cimg :src=\"img.url\" :width=\"img.width\" :height=\"img.height\" :alt=\"img.alt\" \u002F>\n",[162,301,302],{"__ignoreMap":160},[165,303,304,306,308,311,313,315,318,320,323,325,327,330,332,335,337,339,342,344,347,349,351,354,356],{"class":167,"line":168},[165,305,172],{"class":171},[165,307,176],{"class":175},[165,309,310],{"class":179}," :src",[165,312,183],{"class":171},[165,314,186],{"class":171},[165,316,317],{"class":189},"img.url",[165,319,186],{"class":171},[165,321,322],{"class":179}," :width",[165,324,183],{"class":171},[165,326,186],{"class":171},[165,328,329],{"class":189},"img.width",[165,331,186],{"class":171},[165,333,334],{"class":179}," :height",[165,336,183],{"class":171},[165,338,186],{"class":171},[165,340,341],{"class":189},"img.height",[165,343,186],{"class":171},[165,345,346],{"class":179}," :alt",[165,348,183],{"class":171},[165,350,186],{"class":171},[165,352,353],{"class":189},"img.alt",[165,355,186],{"class":171},[165,357,358],{"class":171}," \u002F>\n",[12,360,361],{},[19,362,363],{},"✅ CSS with aspect-ratio:",[155,365,369],{"className":366,"code":367,"language":368,"meta":160,"style":160},"language-css shiki shiki-themes material-theme-lighter material-theme material-theme-palenight",".product-img {\n  aspect-ratio: 4 \u002F 5;\n  width: 100%;\n  height: auto;\n}\n","css",[162,370,371,382,406,419,432],{"__ignoreMap":160},[165,372,373,375,379],{"class":167,"line":168},[165,374,49],{"class":171},[165,376,378],{"class":377},"sBMFI","product-img",[165,380,381],{"class":171}," {\n",[165,383,385,389,392,396,400,403],{"class":167,"line":384},2,[165,386,388],{"class":387},"sqsOY","  aspect-ratio",[165,390,391],{"class":171},":",[165,393,395],{"class":394},"sbssI"," 4",[165,397,399],{"class":398},"sTEyZ"," \u002F ",[165,401,402],{"class":394},"5",[165,404,405],{"class":171},";\n",[165,407,409,412,414,417],{"class":167,"line":408},3,[165,410,411],{"class":387},"  width",[165,413,391],{"class":171},[165,415,416],{"class":394}," 100%",[165,418,405],{"class":171},[165,420,422,425,427,430],{"class":167,"line":421},4,[165,423,424],{"class":387},"  height",[165,426,391],{"class":171},[165,428,429],{"class":398}," auto",[165,431,405],{"class":171},[165,433,435],{"class":167,"line":434},5,[165,436,437],{"class":171},"}\n",[12,439,440,443],{},[19,441,442],{},"Quick Win:"," Just adding width and height (or aspect-ratio) to your gallery images is often enough to cut CLS by 50%+.",[145,445,447],{"id":446},"_2-add-placeholders-for-lazy-loaded-images","2. ✅ Add Placeholders for Lazy-Loaded Images",[155,449,451],{"className":157,"code":450,"language":159,"meta":160,"style":160},"\u003Cdiv class=\"img-frame\" style=\"width:300px; height:400px;\">\n  \u003Cimg src=\"placeholder.jpg\" data-src=\"shoe.jpg\" class=\"lazy\" alt=\"...\">\n\u003C\u002Fdiv>\n",[162,452,453,486,538],{"__ignoreMap":160},[165,454,455,457,460,463,465,467,470,472,475,477,479,482,484],{"class":167,"line":168},[165,456,172],{"class":171},[165,458,459],{"class":175},"div",[165,461,462],{"class":179}," class",[165,464,183],{"class":171},[165,466,186],{"class":171},[165,468,469],{"class":189},"img-frame",[165,471,186],{"class":171},[165,473,474],{"class":179}," style",[165,476,183],{"class":171},[165,478,186],{"class":171},[165,480,481],{"class":189},"width:300px; height:400px;",[165,483,186],{"class":171},[165,485,219],{"class":171},[165,487,488,491,493,495,497,499,502,504,507,509,511,513,515,517,519,521,523,525,527,529,531,534,536],{"class":167,"line":384},[165,489,490],{"class":171},"  \u003C",[165,492,176],{"class":175},[165,494,180],{"class":179},[165,496,183],{"class":171},[165,498,186],{"class":171},[165,500,501],{"class":189},"placeholder.jpg",[165,503,186],{"class":171},[165,505,506],{"class":179}," data-src",[165,508,183],{"class":171},[165,510,186],{"class":171},[165,512,190],{"class":189},[165,514,186],{"class":171},[165,516,462],{"class":179},[165,518,183],{"class":171},[165,520,186],{"class":171},[165,522,214],{"class":189},[165,524,186],{"class":171},[165,526,195],{"class":179},[165,528,183],{"class":171},[165,530,186],{"class":171},[165,532,533],{"class":189},"...",[165,535,186],{"class":171},[165,537,219],{"class":171},[165,539,540,543,545],{"class":167,"line":408},[165,541,542],{"class":171},"\u003C\u002F",[165,544,459],{"class":175},[165,546,219],{"class":171},[12,548,549],{},"Even with native loading=\"lazy\", dimensions are still essential.",[145,551,553],{"id":552},"_3-stabilize-carousels-on-first-render","3. ✅ Stabilize Carousels on First Render",[12,555,556],{},[19,557,558],{},"CSS:",[155,560,562],{"className":366,"code":561,"language":368,"meta":160,"style":160},".my-slider > .slide:not(:first-child) {\n  display: none;\n}\n\n.carousel {\n  min-height: 400px;\n}\n",[162,563,564,596,608,612,618,627,640],{"__ignoreMap":160},[165,565,566,568,571,574,577,580,582,585,588,591,594],{"class":167,"line":168},[165,567,49],{"class":171},[165,569,570],{"class":377},"my-slider",[165,572,573],{"class":171}," >",[165,575,576],{"class":171}," .",[165,578,579],{"class":377},"slide",[165,581,391],{"class":171},[165,583,584],{"class":179},"not",[165,586,587],{"class":171},"(:",[165,589,590],{"class":179},"first-child",[165,592,593],{"class":171},")",[165,595,381],{"class":171},[165,597,598,601,603,606],{"class":167,"line":384},[165,599,600],{"class":387},"  display",[165,602,391],{"class":171},[165,604,605],{"class":398}," none",[165,607,405],{"class":171},[165,609,610],{"class":167,"line":408},[165,611,437],{"class":171},[165,613,614],{"class":167,"line":421},[165,615,617],{"emptyLinePlaceholder":616},true,"\n",[165,619,620,622,625],{"class":167,"line":434},[165,621,49],{"class":171},[165,623,624],{"class":377},"carousel",[165,626,381],{"class":171},[165,628,630,633,635,638],{"class":167,"line":629},6,[165,631,632],{"class":387},"  min-height",[165,634,391],{"class":171},[165,636,637],{"class":394}," 400px",[165,639,405],{"class":171},[165,641,643],{"class":167,"line":642},7,[165,644,437],{"class":171},[12,646,647],{},[19,648,649],{},"Vue Example:",[155,651,653],{"className":157,"code":652,"language":159,"meta":160,"style":160},"\u003Cdiv v-show=\"index === 0\">...\u003C\u002Fdiv>\n",[162,654,655],{"__ignoreMap":160},[165,656,657,659,661,664,666,668,671,673,676,678,680,682],{"class":167,"line":168},[165,658,172],{"class":171},[165,660,459],{"class":175},[165,662,663],{"class":179}," v-show",[165,665,183],{"class":171},[165,667,186],{"class":171},[165,669,670],{"class":189},"index === 0",[165,672,186],{"class":171},[165,674,675],{"class":171},">",[165,677,533],{"class":398},[165,679,542],{"class":171},[165,681,459],{"class":175},[165,683,219],{"class":171},[145,685,687],{"id":686},"_4-animate-with-transform-not-margin-or-position","4. ✅ Animate with transform, Not margin or position",[12,689,690],{},[19,691,153],{},[155,693,695],{"className":366,"code":694,"language":368,"meta":160,"style":160},".zoom:hover {\n  margin-top: 20px;\n}\n",[162,696,697,711,723],{"__ignoreMap":160},[165,698,699,701,704,706,709],{"class":167,"line":168},[165,700,49],{"class":171},[165,702,703],{"class":377},"zoom",[165,705,391],{"class":171},[165,707,708],{"class":179},"hover",[165,710,381],{"class":171},[165,712,713,716,718,721],{"class":167,"line":384},[165,714,715],{"class":387},"  margin-top",[165,717,391],{"class":171},[165,719,720],{"class":394}," 20px",[165,722,405],{"class":171},[165,724,725],{"class":167,"line":408},[165,726,437],{"class":171},[12,728,729],{},[19,730,224],{},[155,732,734],{"className":366,"code":733,"language":368,"meta":160,"style":160},".zoom {\n  transition: transform 0.3s ease;\n}\n.zoom:hover {\n  transform: scale(1.1);\n}\n",[162,735,736,744,762,766,778,798],{"__ignoreMap":160},[165,737,738,740,742],{"class":167,"line":168},[165,739,49],{"class":171},[165,741,703],{"class":377},[165,743,381],{"class":171},[165,745,746,749,751,754,757,760],{"class":167,"line":384},[165,747,748],{"class":387},"  transition",[165,750,391],{"class":171},[165,752,753],{"class":398}," transform ",[165,755,756],{"class":394},"0.3s",[165,758,759],{"class":398}," ease",[165,761,405],{"class":171},[165,763,764],{"class":167,"line":408},[165,765,437],{"class":171},[165,767,768,770,772,774,776],{"class":167,"line":421},[165,769,49],{"class":171},[165,771,703],{"class":377},[165,773,391],{"class":171},[165,775,708],{"class":179},[165,777,381],{"class":171},[165,779,780,783,785,789,792,795],{"class":167,"line":434},[165,781,782],{"class":387},"  transform",[165,784,391],{"class":171},[165,786,788],{"class":787},"s2Zo4"," scale",[165,790,791],{"class":171},"(",[165,793,794],{"class":394},"1.1",[165,796,797],{"class":171},");\n",[165,799,800],{"class":167,"line":629},[165,801,437],{"class":171},[145,803,805],{"id":804},"_5-pre-allocate-space-for-injected-ui","5. ✅ Pre-allocate Space for Injected UI",[12,807,808],{},[19,809,810],{},"HTML:",[155,812,814],{"className":157,"code":813,"language":159,"meta":160,"style":160},"\u003Cdiv class=\"promo-placeholder\" style=\"min-height: 60px;\">\u003C\u002Fdiv>\n",[162,815,816],{"__ignoreMap":160},[165,817,818,820,822,824,826,828,831,833,835,837,839,842,844,847,849],{"class":167,"line":168},[165,819,172],{"class":171},[165,821,459],{"class":175},[165,823,462],{"class":179},[165,825,183],{"class":171},[165,827,186],{"class":171},[165,829,830],{"class":189},"promo-placeholder",[165,832,186],{"class":171},[165,834,474],{"class":179},[165,836,183],{"class":171},[165,838,186],{"class":171},[165,840,841],{"class":189},"min-height: 60px;",[165,843,186],{"class":171},[165,845,846],{"class":171},">\u003C\u002F",[165,848,459],{"class":175},[165,850,219],{"class":171},[12,852,853],{},[19,854,558],{},[155,856,858],{"className":366,"code":857,"language":368,"meta":160,"style":160},".gallery-wrapper::before {\n  content: \"\";\n  display: block;\n  height: 60px;\n}\n",[162,859,860,875,887,898,909],{"__ignoreMap":160},[165,861,862,864,867,870,873],{"class":167,"line":168},[165,863,49],{"class":171},[165,865,866],{"class":377},"gallery-wrapper",[165,868,869],{"class":171},"::",[165,871,872],{"class":179},"before",[165,874,381],{"class":171},[165,876,877,880,882,885],{"class":167,"line":384},[165,878,879],{"class":387},"  content",[165,881,391],{"class":171},[165,883,884],{"class":171}," \"\"",[165,886,405],{"class":171},[165,888,889,891,893,896],{"class":167,"line":408},[165,890,600],{"class":387},[165,892,391],{"class":171},[165,894,895],{"class":398}," block",[165,897,405],{"class":171},[165,899,900,902,904,907],{"class":167,"line":421},[165,901,424],{"class":387},[165,903,391],{"class":171},[165,905,906],{"class":394}," 60px",[165,908,405],{"class":171},[165,910,911],{"class":167,"line":434},[165,912,437],{"class":171},[145,914,916],{"id":915},"clsfriendly-carousel-libraries","🌟 CLS ‑Friendly Carousel Libraries",[918,919,920,939],"table",{},[921,922,923],"thead",{},[924,925,926,930,933,936],"tr",{},[927,928,929],"th",{},"Library",[927,931,932],{},"Type",[927,934,935],{},"CLS Safety",[927,937,938],{},"Why It Helps",[940,941,942,957,971],"tbody",{},[924,943,944,948,951,954],{},[945,946,947],"td",{},"vue3-carousel",[945,949,950],{},"Vue 3",[945,952,953],{},"✅ Good",[945,955,956],{},"Lightweight SSR-friendly carousel: slides aren’t injected in the DOM until after hydration. No surprise shifts.",[924,958,959,962,965,968],{},[945,960,961],{},"vue3-ssr-carousel",[945,963,964],{},"Vue 3 (SSR\u002FSSG)",[945,966,967],{},"✅ Excellent",[945,969,970],{},"No JS layout changes post-hydration—fully SSR-rendered slides ensure zero CLS.",[924,972,973,976,979,982],{},[945,974,975],{},"Glider.js",[945,977,978],{},"Vanilla JS",[945,980,981],{},"✅ Better",[945,983,984],{},"Lightweight (≈2.8 KB), native scrolling, and uses CSS layout—minimal DOM manipulation helps stabilize CLS.",[68,986,988],{"id":987},"why-these-matter-for-cls","🧹 Why These Matter for CLS",[990,991,992,1005],"ul",{},[106,993,994,997,998,1001,1002,1004],{},[19,995,996],{},"SSR ‑friendliness",": Libraries like ",[999,1000,947],"em",{}," and ",[999,1003,961],{}," render the carousel fully on the server (or pre-render), preventing sudden DOM injections post-load.",[106,1006,1007,1010,1011,1001,1014,1016],{},[19,1008,1009],{},"CSS ‑driven layout",": Tools like ",[999,1012,1013],{},"vue-horizontal",[999,1015,975],{}," rely on CSS (e.g., native scroll or transform), which avoids modifying layout and therefore minimizes layout thrashing.",[68,1018,1020],{"id":1019},"business-impact-of-cls-why-it-matters","📈 Business Impact of CLS: Why It Matters",[12,1022,1023,1026],{},[19,1024,1025],{},"CLS isn’t just a developer metric"," — it’s a silent killer of conversions, trust, and SEO. In e-commerce, layout shifts from image galleries directly impact revenue.",[12,1028,1029,1030,1033,1034,1036,1037,1040],{},"A ",[19,1031,1032],{},"Vue.js development agency"," like ",[19,1035,57],{}," helps teams detect and fix CLS issues early — improving stability, Core Web Vitals, and user experience. If you’re looking to ",[19,1038,1039],{},"hire Vue.js developers"," who care about both performance and UX, you’re in the right place.",[68,1042,1044],{"id":1043},"real-world-cls-data","📊 Real-World CLS Data",[12,1046,1047],{},"Understanding how your site compares to the wider web is the first step:",[990,1049,1050,1056,1062,1068],{},[106,1051,1052,1055],{},[19,1053,1054],{},"∼50%"," of page loads already meet Google’s “Good” threshold (CLS \u003C 0.10) — if you’re above this, your competition is likely offering a smoother, more stable experience.",[106,1057,1058,1061],{},[19,1059,1060],{},"0.28"," is the 75th percentile — if you're above this, you're among the worst 25% in layout stability and almost certainly losing trust and revenue.",[106,1063,1064,1067],{},[19,1065,1066],{},"CLS > 0.1"," correlates with lower conversions and higher bounce rates.",[106,1069,1070,1073],{},[19,1071,1072],{},"Google’s target",": CLS ≤ 0.1 in at least 75% of sessions.",[12,1075,1076],{},"💡 If your product gallery causes unexpected shifts, you’re likely losing users and sales to competitors with smoother experiences.",[68,1078,1080],{"id":1079},"business-benefits-of-fixing-cls","💡 Business Benefits of Fixing CLS",[12,1082,1083],{},"Stable galleries deliver measurable results:",[990,1085,1086,1093,1100,1112],{},[106,1087,1088,1089,1092],{},"📉 ",[19,1090,1091],{},"Reduced Bounce:"," Users stay longer when pages don’t jump",[106,1094,1095,1096,1099],{},"⏳ ",[19,1097,1098],{},"Longer Sessions:"," A stable interface encourages exploration",[106,1101,1102,1103,1106,1107,1111],{},"🔍 ",[19,1104,1105],{},"SEO Boost:"," CLS is a ",[38,1108,48],{"href":1109,"rel":1110},"https:\u002F\u002Fweb.dev\u002Fvitals\u002F",[42]," ranking factor",[106,1113,1114,1115,1118],{},"💳 ",[19,1116,1117],{},"More Conversions:"," A smooth gallery builds trust and shortens decision time",[68,1120,1122],{"id":1121},"measuring-roi-ab-and-correlation-testing","📈 Measuring ROI: A\u002FB and Correlation Testing",[12,1124,1125],{},"Fixing CLS isn’t just a tech win — it should pay off in business metrics.",[12,1127,1128,1129,1033,1132,1137,1138,1143,1144,1149],{},"Once you’ve optimized your gallery, use ",[19,1130,1131],{},"real-user monitoring (RUM) tools",[38,1133,1136],{"href":1134,"rel":1135},"https:\u002F\u002Fspeedcurve.com\u002F",[42],"SpeedCurve",", ",[38,1139,1142],{"href":1140,"rel":1141},"https:\u002F\u002Fraygun.com\u002F",[42],"Raygun",", or ",[38,1145,1148],{"href":1146,"rel":1147},"https:\u002F\u002Fnewrelic.com\u002F",[42],"New Relic"," to connect performance improvements to business impact.",[12,1151,1152],{},[19,1153,1154],{},"These tools let you monitor:",[990,1156,1157,1160,1163,1166],{},[106,1158,1159],{},"Bounce rate",[106,1161,1162],{},"Session duration",[106,1164,1165],{},"Conversion rate",[106,1167,1168],{},"CLS and other layout metrics",[12,1170,1171],{},[19,1172,1173],{},"📊 Real-world stat:",[12,1175,1176],{},"Sessions with CLS \u003C 0.1 convert 2× better than sessions with CLS > 0.25.",[12,1178,1179],{},[19,1180,1181],{},"Make it actionable by:",[990,1183,1184,1187],{},[106,1185,1186],{},"Running A\u002FB tests to compare gallery performance before and after fixes",[106,1188,1189,1190,1195],{},"Using ",[38,1191,1194],{"href":1192,"rel":1193},"https:\u002F\u002Fsupport.speedcurve.com\u002Fdocs\u002Fcreate-correlation-charts",[42],"correlation charts"," to visually tie CLS improvements to trust, engagement, and revenue gains",[12,1197,1198,1199,1202],{},"These are graphs that map CLS values against business KPIs to find patterns.",[1200,1201],"br",{},"\nBy treating CLS like a business KPI — not just a dev concern — you’ll unlock stronger results and buy-in from stakeholders.",[68,1204,1206],{"id":1205},"what-to-do-next","🚀 What to Do Next",[12,1208,1209],{},"🛒 Start by fixing one gallery on your top product page — and watch your CLS and conversions improve.",[12,1211,1212],{},[19,1213,1214],{},"📋 Start Here:",[12,1216,1217],{},"✅ Audit CLS in DevTools → Performance tab",[12,1219,1220],{},"✅ Add dimensions or aspect-ratio to gallery images",[12,1222,1223],{},"✅ Set CSS min-heights for carousels",[12,1225,1226],{},"✅ Add skeletons or placeholders for lazy media",[12,1228,1229],{},"✅ Pick a CLS-friendly library (e.g., vue3-carousel)",[68,1231,1233],{"id":1232},"conclusion","✅ Conclusion",[12,1235,1236,1237,1001,1240,1243],{},"Image galleries make your product pages engaging — but they can silently ruin your ",[19,1238,1239],{},"CLS score",[19,1241,1242],{},"conversion rates",". Thankfully, most layout shift issues are preventable with a few targeted optimizations.",[12,1245,1246],{},"By reserving space for images, adding lazy-load placeholders, stabilizing carousels, and using transform instead of layout-moving animations, you can significantly reduce CLS and improve the overall user experience.",[12,1248,1249,1250,1137,1253,1143,1256,1259],{},"Don’t stop at implementation — validate your fixes with ",[19,1251,1252],{},"Chrome DevTools",[19,1254,1255],{},"Lighthouse",[19,1257,1258],{},"RUM tools"," to confirm improvements in real-world conditions.",[12,1261,1262],{},"✨ Even small CLS optimizations can lead to measurable gains in engagement, SEO performance, and revenue.",[12,1264,1265,1266,1001,1271,1277],{},"Need help refining your gallery performance? Epicmax offers ",[38,1267,1270],{"href":1268,"rel":1269},"https:\u002F\u002Fepicmax.co\u002Fvue-js-consulting-services",[42],"Vue.js consulting services",[19,1272,1273],{},[38,1274,1276],{"href":63,"rel":1275},[42],"outsourced Vue developers"," who specialize in Core Web Vitals, performance, and UX optimization.",[1279,1280],"blog-button",{"label":1281,"to":1282},"Talk to an engineer","https:\u002F\u002Fcalendar.app.google\u002FXwRzASZitZRSVLxq6",[1284,1285,1286],"style",{},"html pre.shiki code .sMK4o, html code.shiki .sMK4o{--shiki-light:#39ADB5;--shiki-default:#89DDFF;--shiki-dark:#89DDFF}html pre.shiki code .swJcz, html code.shiki .swJcz{--shiki-light:#E53935;--shiki-default:#F07178;--shiki-dark:#F07178}html pre.shiki code .spNyl, html code.shiki .spNyl{--shiki-light:#9C3EDA;--shiki-default:#C792EA;--shiki-dark:#C792EA}html pre.shiki code .sfazB, html code.shiki .sfazB{--shiki-light:#91B859;--shiki-default:#C3E88D;--shiki-dark:#C3E88D}html .light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html.light .shiki span {color: var(--shiki-light);background: var(--shiki-light-bg);font-style: var(--shiki-light-font-style);font-weight: var(--shiki-light-font-weight);text-decoration: var(--shiki-light-text-decoration);}html .default .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .shiki span {color: var(--shiki-default);background: var(--shiki-default-bg);font-style: var(--shiki-default-font-style);font-weight: var(--shiki-default-font-weight);text-decoration: var(--shiki-default-text-decoration);}html .dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html.dark .shiki span {color: var(--shiki-dark);background: var(--shiki-dark-bg);font-style: var(--shiki-dark-font-style);font-weight: var(--shiki-dark-font-weight);text-decoration: var(--shiki-dark-text-decoration);}html pre.shiki code .sBMFI, html code.shiki .sBMFI{--shiki-light:#E2931D;--shiki-default:#FFCB6B;--shiki-dark:#FFCB6B}html pre.shiki code .sqsOY, html code.shiki .sqsOY{--shiki-light:#8796B0;--shiki-default:#B2CCD6;--shiki-dark:#B2CCD6}html pre.shiki code .sbssI, html code.shiki .sbssI{--shiki-light:#F76D47;--shiki-default:#F78C6C;--shiki-dark:#F78C6C}html pre.shiki code .sTEyZ, html code.shiki .sTEyZ{--shiki-light:#90A4AE;--shiki-default:#EEFFFF;--shiki-dark:#BABED8}html pre.shiki code .s2Zo4, html code.shiki .s2Zo4{--shiki-light:#6182B8;--shiki-default:#82AAFF;--shiki-dark:#82AAFF}",{"title":160,"searchDepth":408,"depth":408,"links":1288},[1289,1290,1291,1299,1300,1301,1302,1303,1304,1305],{"id":70,"depth":384,"text":71},{"id":100,"depth":384,"text":101},{"id":142,"depth":384,"text":143,"children":1292},[1293,1294,1295,1296,1297,1298],{"id":147,"depth":408,"text":148},{"id":446,"depth":408,"text":447},{"id":552,"depth":408,"text":553},{"id":686,"depth":408,"text":687},{"id":804,"depth":408,"text":805},{"id":915,"depth":408,"text":916},{"id":987,"depth":384,"text":988},{"id":1019,"depth":384,"text":1020},{"id":1043,"depth":384,"text":1044},{"id":1079,"depth":384,"text":1080},{"id":1121,"depth":384,"text":1122},{"id":1205,"depth":384,"text":1206},{"id":1232,"depth":384,"text":1233},"2025-10-08","Learn how to prevent layout shifts in e-commerce image galleries and carousels. Epicmax — a Vue.js development and consulting agency — helps you improve Core Web Vitals, fix CLS issues, and boost performance and conversions.","md",false,"\u002Fimages\u002Fblog\u002Fhow-to-fix-cls\u002Fcard.png",{},"\u002Fblog\u002Fhow-to-fix-cls",{"title":5,"description":1307},"blog\u002Fhow-to-fix-cls","uW-yvqs9hIxwnnuhqI2kS2sk4aaK0PjTqw_ooE8wbn8",1784559991785]