How to lazy load images in Blogger:(Defer Offscreen images)
The most effective method to empower Apathetic stacking on Blogger
Pictures assume significant parts in site speed and In the event that you are utilizing heaps of pictures on a site page, it will demand more assets and hinders your website page stacking speed.
A site should stack inside 3 seconds for a superior client experience yet As indicated by Google research normal stacking season of website pages is 22 seconds. To improve your site speed you need to more readily streamline your Pictures.
In WordPress, you will discover many Picture enhancement modules like short pixel, Smush, and so forth yet on the Blogger site, you need to physically advance your pictures and transfer them to your site.
So you can follow a few strategies to upgrade your site speed by utilizing picture designs like .webp, JPG 2000 and You can likewise carry out lazyload on a blogger site for better client experience and speed.
What is apathetic stacking?
Sluggish stacking is an advancement method for Sites that defer the stacking of assets or items until they're really required and lessen the underlying burden time.
For instance, If a site page has different pictures at the lower part of the page and the client needs to look down to see the picture, you can show a placeholder and lethargic burden the full picture just when the client shows up at its area.
There are a few advantages of empowering the lazyload for pictures. It lessens the underlying burden time by diminishing the page weight and save both worker and customer assets. Lethargic stacking helps preserves transmission capacity by conveying substance to clients just if it's mentioned.
Steps to enable lazyload on blogger:
Follow the below steps to add a lazyload script for bloggers. It will apply the lazy load for all images automatically. There is no need to manually add the Inline <img> tags.
- In to the Blogger dashboard and click on the theme section.
- Click on Edit HTML from the drop-down menu.
- On the HTML Editor click on ctrl + F and search for </body> or scroll down to the end you will find this </body> tag.
- Paste the javascript code just above the </body> tag and save it.
Lazyload script:
< script >
//<;
b.loaded = true
}).attr("src", a(b).attr("original"))
}
});
if ("scroll" != c.event) {
a(b).bind(c.event, function(c) {
if (!b.loaded) {
a(b).trigger("appear")
}
})
}
});
a(c.container).trigger(c.event);
return this
};
a.belowthefold = function(b, c) {
if (c.container === undefined || c.container === window) {
var d = a(window).height() + a(window).scrollTop()
} else {
var d = a(c.container).offset().top + a(c.container).height()
}
return d <= a(b).offset().top - c.threshold
};
a.rightoffold = function(b, c) {
if (c.container === undefined || c.container === window) {
var d = a(window).width() + a(window).scrollLeft()
} else {
var d = a(c.container).offset().left + a(c.container).width()
}
return d <= a(b).offset().left - c.threshold
};
a.abovethetop = function(b, c) {
if (c.container === undefined || c.container === window) {
var d = a(window).scrollTop()
} else {
var d = a(c.container).offset().top
}
return d >= a(b).offset().top + c.threshold + a(b).height()
};
a.leftofbegin = function(b, c) {
if (c.container === undefined || c.container === window) {
var d = a(window).scrollLeft()
} else {
var d = a(c.container).offset().left
}
return d >= a(b).offset().left + c.threshold + a(b).width()
};
a.extend(a.expr[":"], {
"below-the-fold": "$.belowthefold(a, {threshold : 0, container: window})",
"above-the-fold": "!$.belowthefold(a, {threshold : 0, container: window})",
"right-of-fold": "$.rightoffold(a, {threshold : 0, container: window})",
"left-of-fold": "!$.rightoffold(a, {threshold : 0, container: window})"
})
})(jQuery);
$(function() {
$("img").lazyload({
placeholder: "https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgM3s15bwLhogyx3UCtzXEttA9qer_yNSF2cd3tY_PdXkIa0U0bozM8Me5aZRjHaBxJmE2QzpT_4-jHjf_rBK8otRfUZsDZOubPC26M_STbq4-bDzYhWagMhdDtavWr63ENXvmAtu5vV9Q/s10/loadingku.gif",
effect: "fadeIn",
threshold: "-50"
})
});
//]]>
<
/script>Compressed Lazyload script:
<script>
//<;b.loaded=true}).attr("src",a(b).attr("original"))}});if("scroll"!=c.event){a(b).bind(c.event,function(c){if(!b.loaded){a(b).trigger("appear")}})}});a(c.container).trigger(c.event);return this};a.belowthefold=function(b,c){if(c.container===undefined||c.container===window){var d=a(window).height()+a(window).scrollTop()}else{var d=a(c.container).offset().top+a(c.container).height()}return d<=a(b).offset().top-c.threshold};a.rightoffold=function(b,c){if(c.container===undefined||c.container===window){var d=a(window).width()+a(window).scrollLeft()}else{var d=a(c.container).offset().left+a(c.container).width()}return d<=a(b).offset().left-c.threshold};a.abovethetop=function(b,c){if(c.container===undefined||c.container===window){var d=a(window).scrollTop()}else{var d=a(c.container).offset().top}return d>=a(b).offset().top+c.threshold+a(b).height()};a.leftofbegin=function(b,c){if(c.container===undefined||c.container===window){var d=a(window).scrollLeft()}else{var d=a(c.container).offset().left}return d>=a(b).offset().left+c.threshold+a(b).width()};a.extend(a.expr[":"],{"below-the-fold":"$.belowthefold(a, {threshold : 0, container: window})","above-the-fold":"!$.belowthefold(a, {threshold : 0, container: window})","right-of-fold":"$.rightoffold(a, {threshold : 0, container: window})","left-of-fold":"!$.rightoffold(a, {threshold : 0, container: window})"})})(jQuery);$(function(){$("img").lazyload({placeholder:"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgM3s15bwLhogyx3UCtzXEttA9qer_yNSF2cd3tY_PdXkIa0U0bozM8Me5aZRjHaBxJmE2QzpT_4-jHjf_rBK8otRfUZsDZOubPC26M_STbq4-bDzYhWagMhdDtavWr63ENXvmAtu5vV9Q/s10/loadingku.gif",effect:"fadeIn",threshold:"-50"})});
//]]>
</script>Or Alternative
Preview:
<!-- Blogger Scripts -->
<script>
//<;b.loaded=true}).attr("src",a(b).attr("original"))}});if("scroll"!=c.event){a(b).bind(c.event,function(c){if(!b.loaded){a(b).trigger("appear")}})}});a(c.container).trigger(c.event);return this};a.belowthefold=function(b,c){if(c.container===undefined||c.container===window){var d=a(window).height()+a(window).scrollTop()}else{var d=a(c.container).offset().top+a(c.container).height()}return d<=a(b).offset().top-c.threshold};a.rightoffold=function(b,c){if(c.container===undefined||c.container===window){var d=a(window).width()+a(window).scrollLeft()}else{var d=a(c.container).offset().left+a(c.container).width()}return d<=a(b).offset().left-c.threshold};a.abovethetop=function(b,c){if(c.container===undefined||c.container===window){var d=a(window).scrollTop()}else{var d=a(c.container).offset().top}return d>=a(b).offset().top+c.threshold+a(b).height()};a.leftofbegin=function(b,c){if(c.container===undefined||c.container===window){var d=a(window).scrollLeft()}else{var d=a(c.container).offset().left}return d>=a(b).offset().left+c.threshold+a(b).width()};a.extend(a.expr[":"],{"below-the-fold":"$.belowthefold(a, {threshold : 0, container: window})","above-the-fold":"!$.belowthefold(a, {threshold : 0, container: window})","right-of-fold":"$.rightoffold(a, {threshold : 0, container: window})","left-of-fold":"!$.rightoffold(a, {threshold : 0, container: window})"})})(jQuery);$(function(){$("img").lazyload({placeholder:"https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiIlgkmGdKzUrz0l9GRSz7G7FX_lcY1XzMIIZOQ5vcdFq8UijthUkyZZR8nKrK0UfW69oWAj9pD3cFxcP5i6LQg6NTry4cO825qqF9HUl1dQlo8xVJQXtkCW1-iyDRO6m2H70VY6GrDJhNb/s1/arlinadesign.gif",effect:"fadeIn",threshold:"-50"})});
//]]>
</script>
Presently you can check your site speed on google page speed knowledge and It will show if the sluggish burden is appropriately carried out on your site or not. You can find in the underneath screen capture that my site passed the review on lazyload.
Lazyload Script for Blogger Image - Speed Up your Blog/blogspot
Sluggish burden review passed on page speed knowledge
In the event that you have any questions with respect to Picture advancement or Apathetic stacking script execution on blogger ask me in the remark area. Likewise, Buy in to our week by week pamphlet to get refreshed on future substance that we post consistently.
Method 2: Native Lazy Loading
This method is very easy and works in almost every modern browser. To implement this method, make sure you added a lazy loading attribute whenever you add media files for your blog posts. For your old posts, you must add lazy loading attributes by editing them. That's it. See the example below:<img loading="lazy" alt="alt_text_here" src="your_image_path"/>Method 3: Use Original Lazysizes Lazy Load Plugin
Lazysizes is a very lightweight lazy loading plugin to optimize the media files of a webpage. To implement lazysizes please :- Log in to your Blogger dashboard and select your targeted blog(if you have multiple blogs)
- Select Theme and Click on the down arrow button next to the customize button and then click on EDIT HTML.
- Now search for the </body> and paste the below script just above the </body> tag and save your template.
<script type='text/javascript' src='https://raw.githubusercontent.com/aFarkas/lazysizes/gh-pages/lazysizes.min.js'/><img class="lazyload" alt="alt_text_here" data-src="your_image_path"/>How to verify lazy loading?
There are many tools to verify that lazy load plugin is working or not on your site. You can compare the page speed performance of your site using GTMetrix or PageSpeed Insights with or without a lazy load script. Alternatively, you can verify lazy loading with the help of Inspect Element Feature of web browsers.- Navigate to your website.
- Right-click on any blank space and click on Inspect Element
- Go to Network Tab and then click on the Reload button.
- Scroll down and you will see that media files are getting loaded one after another.
Conclusion
If this tutorial helped you to implement the lazy load plugin in your Blogger Blogspot blog then kindly share it with others.And if you face any problem while installing this plugin in your blog, please leave a comment below I would love to give you the solution.
Preview the original script:
/*! lazysizes - v5.3.2 */ !function(e){var t=function(u,D,f){"use strict";var k,H;if(function(){var e;var t={lazyClass:"lazyload",loadedClass:"lazyloaded",loadingClass:"lazyloading",preloadClass:"lazypreload",errorClass:"lazyerror",autosizesClass:"lazyautosizes",fastLoadedClass:"ls-is-cached",iframeLoadMode:0,srcAttr:"data-src",srcsetAttr:"data-srcset",sizesAttr:"data-sizes",minSize:40,customMedia:{},init:true,expFactor:1.5,hFac:.8,loadMode:2,loadHidden:true,ricTimeout:0,throttleDelay:125};H=u.lazySizesConfig||u.lazysizesConfig||{};for(e in t){if(!(e in H)){H[e]=t[e]}}}(),!D||!D.getElementsByClassName){return{init:function(){},cfg:H,noSupport:true}}var O=D.documentElement,i=u.HTMLPictureElement,P="addEventListener",$="getAttribute",q=u[P].bind(u),I=u.setTimeout,U=u.requestAnimationFrame||I,o=u.requestIdleCallback,j=/^picture$/i,r=["load","error","lazyincluded","_lazyloaded"],a={},G=Array.prototype.forEach,J=function(e,t){if(!a[t]){a[t]=new RegExp("(\\s|^)"+t+"(\\s|$)")}return a[t].test(e[$]("class")||"")&&a[t]},K=function(e,t){if(!J(e,t)){e.setAttribute("class",(e[$]("class")||"").trim()+" "+t)}},Q=function(e,t){var a;if(a=J(e,t)){e.setAttribute("class",(e[$]("class")||"").replace(a," "))}},V=function(t,a,e){var i=e?P:"removeEventListener";if(e){V(t,a)}r.forEach(function(e){t[i](e,a)})},X=function(e,t,a,i,r){var n=D.createEvent("Event");if(!a){a={}}a.instance=k;n.initEvent(t,!i,!r);n.detail=a;e.dispatchEvent(n);return n},Y=function(e,t){var a;if(!i&&(a=u.picturefill||H.pf)){if(t&&t.src&&!e[$]("srcset")){e.setAttribute("srcset",t.src)}a({reevaluate:true,elements:[e]})}else if(t&&t.src){e.src=t.src}},Z=function(e,t){return(getComputedStyle(e,null)||{})[t]},s=function(e,t,a){a=a||e.offsetWidth;while(a<H.minSize&&t&&!e._lazysizesWidth){a=t.offsetWidth;t=t.parentNode}return a},ee=function(){var a,i;var t=[];var r=[];var n=t;var s=function(){var e=n;n=t.length?r:t;a=true;i=false;while(e.length){e.shift()()}a=false};var e=function(e,t){if(a&&!t){e.apply(this,arguments)}else{n.push(e);if(!i){i=true;(D.hidden?I:U)(s)}}};e._lsFlush=s;return e}(),te=function(a,e){return e?function(){ee(a)}:function(){var e=this;var t=arguments;ee(function(){a.apply(e,t)})}},ae=function(e){var a;var i=0;var r=H.throttleDelay;var n=H.ricTimeout;var t=function(){a=false;i=f.now();e()};var s=o&&n>49?function(){o(t,{timeout:n});if(n!==H.ricTimeout){n=H.ricTimeout}}:te(function(){I(t)},true);return function(e){var t;if(e=e===true){n=33}if(a){return}a=true;t=r-(f.now()-i);if(t<0){t=0}if(e||t<9){s()}else{I(s,t)}}},ie=function(e){var t,a;var i=99;var r=function(){t=null;e()};var n=function(){var e=f.now()-a;if(e<i){I(n,i-e)}else{(o||r)(r)}};return function(){a=f.now();if(!t){t=I(n,i)}}},e=function(){var v,m,c,h,e;var y,z,g,p,C,b,A;var n=/^img$/i;var d=/^iframe$/i;var E="onscroll"in u&&!/(gle|ing)bot/.test(navigator.userAgent);var _=0;var w=0;var M=0;var N=-1;var L=function(e){M--;if(!e||M<0||!e.target){M=0}};var x=function(e){if(A==null){A=Z(D.body,"visibility")=="hidden"}return A||!(Z(e.parentNode,"visibility")=="hidden"&&Z(e,"visibility")=="hidden")};var W=function(e,t){var a;var i=e;var r=x(e);g-=t;b+=t;p-=t;C+=t;while(r&&(i=i.offsetParent)&&i!=D.body&&i!=O){r=(Z(i,"opacity")||1)>0;if(r&&Z(i,"overflow")!="visible"){a=i.getBoundingClientRect();r=C>a.left&&p<a.right&&b>a.top-1&&g<a.bottom+1}}return r};var t=function(){var e,t,a,i,r,n,s,o,l,u,f,c;var d=k.elements;if((h=H.loadMode)&&M<8&&(e=d.length)){t=0;N++;for(;t<e;t++){if(!d[t]||d[t]._lazyRace){continue}if(!E||k.prematureUnveil&&k.prematureUnveil(d[t])){R(d[t]);continue}if(!(o=d[t][$]("data-expand"))||!(n=o*1)){n=w}if(!u){u=!H.expand||H.expand<1?O.clientHeight>500&&O.clientWidth>500?500:370:H.expand;k._defEx=u;f=u*H.expFactor;c=H.hFac;A=null;if(w<f&&M<1&&N>2&&h>2&&!D.hidden){w=f;N=0}else if(h>1&&N>1&&M<6){w=u}else{w=_}}if(l!==n){y=innerWidth+n*c;z=innerHeight+n;s=n*-1;l=n}a=d[t].getBoundingClientRect();if((b=a.bottom)>=s&&(g=a.top)<=z&&(C=a.right)>=s*c&&(p=a.left)<=y&&(b||C||p||g)&&(H.loadHidden||x(d[t]))&&(m&&M<3&&!o&&(h<3||N<4)||W(d[t],n))){R(d[t]);r=true;if(M>9){break}}else if(!r&&m&&!i&&M<4&&N<4&&h>2&&(v[0]||H.preloadAfterLoad)&&(v[0]||!o&&(b||C||p||g||d[t][$](H.sizesAttr)!="auto"))){i=v[0]||d[t]}}if(i&&!r){R(i)}}};var a=ae(t);var S=function(e){var t=e.target;if(t._lazyCache){delete t._lazyCache;return}L(e);K(t,H.loadedClass);Q(t,H.loadingClass);V(t,B);X(t,"lazyloaded")};var i=te(S);var B=function(e){i({target:e.target})};var T=function(e,t){var a=e.getAttribute("data-load-mode")||H.iframeLoadMode;if(a==0){e.contentWindow.location.replace(t)}else if(a==1){e.src=t}};var F=function(e){var t;var a=e[$](H.srcsetAttr);if(t=H.customMedia[e[$]("data-media")||e[$]("media")]){e.setAttribute("media",t)}if(a){e.setAttribute("srcset",a)}};var s=te(function(t,e,a,i,r){var n,s,o,l,u,f;if(!(u=X(t,"lazybeforeunveil",e)).defaultPrevented){if(i){if(a){K(t,H.autosizesClass)}else{t.setAttribute("sizes",i)}}s=t[$](H.srcsetAttr);n=t[$](H.srcAttr);if(r){o=t.parentNode;l=o&&j.test(o.nodeName||"")}f=e.firesLoad||"src"in t&&(s||n||l);u={target:t};K(t,H.loadingClass);if(f){clearTimeout(c);c=I(L,2500);V(t,B,true)}if(l){G.call(o.getElementsByTagName("source"),F)}if(s){t.setAttribute("srcset",s)}else if(n&&!l){if(d.test(t.nodeName)){T(t,n)}else{t.src=n}}if(r&&(s||l)){Y(t,{src:n})}}if(t._lazyRace){delete t._lazyRace}Q(t,H.lazyClass);ee(function(){var e=t.complete&&t.naturalWidth>1;if(!f||e){if(e){K(t,H.fastLoadedClass)}S(u);t._lazyCache=true;I(function(){if("_lazyCache"in t){delete t._lazyCache}},9)}if(t.loading=="lazy"){M--}},true)});var R=function(e){if(e._lazyRace){return}var t;var a=n.test(e.nodeName);var i=a&&(e[$](H.sizesAttr)||e[$]("sizes"));var r=i=="auto";if((r||!m)&&a&&(e[$]("src")||e.srcset)&&!e.complete&&!J(e,H.errorClass)&&J(e,H.lazyClass)){return}t=X(e,"lazyunveilread").detail;if(r){re.updateElem(e,true,e.offsetWidth)}e._lazyRace=true;M++;s(e,t,r,i,a)};var r=ie(function(){H.loadMode=3;a()});var o=function(){if(H.loadMode==3){H.loadMode=2}r()};var l=function(){if(m){return}if(f.now()-e<999){I(l,999);return}m=true;H.loadMode=3;a();q("scroll",o,true)};return{_:function(){e=f.now();k.elements=D.getElementsByClassName(H.lazyClass);v=D.getElementsByClassName(H.lazyClass+" "+H.preloadClass);q("scroll",a,true);q("resize",a,true);q("pageshow",function(e){if(e.persisted){var t=D.querySelectorAll("."+H.loadingClass);if(t.length&&t.forEach){U(function(){t.forEach(function(e){if(e.complete){R(e)}})})}}});if(u.MutationObserver){new MutationObserver(a).observe(O,{childList:true,subtree:true,attributes:true})}else{O[P]("DOMNodeInserted",a,true);O[P]("DOMAttrModified",a,true);setInterval(a,999)}q("hashchange",a,true);["focus","mouseover","click","load","transitionend","animationend"].forEach(function(e){D[P](e,a,true)});if(/d$|^c/.test(D.readyState)){l()}else{q("load",l);D[P]("DOMContentLoaded",a);I(l,2e4)}if(k.elements.length){t();ee._lsFlush()}else{a()}},checkElems:a,unveil:R,_aLSL:o}}(),re=function(){var a;var n=te(function(e,t,a,i){var r,n,s;e._lazysizesWidth=i;i+="px";e.setAttribute("sizes",i);if(j.test(t.nodeName||"")){r=t.getElementsByTagName("source");for(n=0,s=r.length;n<s;n++){r[n].setAttribute("sizes",i)}}if(!a.detail.dataAttr){Y(e,a.detail)}});var i=function(e,t,a){var i;var r=e.parentNode;if(r){a=s(e,r,a);i=X(e,"lazybeforesizes",{width:a,dataAttr:!!t});if(!i.defaultPrevented){a=i.detail.width;if(a&&a!==e._lazysizesWidth){n(e,r,i,a)}}}};var e=function(){var e;var t=a.length;if(t){e=0;for(;e<t;e++){i(a[e])}}};var t=ie(e);return{_:function(){a=D.getElementsByClassName(H.autosizesClass);q("resize",t)},checkElems:t,updateElem:i}}(),t=function(){if(!t.i&&D.getElementsByClassName){t.i=true;re._();e._()}};return I(function(){H.init&&t()}),k={cfg:H,autoSizer:re,loader:e,init:t,uP:Y,aC:K,rC:Q,hC:J,fire:X,gW:s,rAF:ee}}(e,e.document,Date);e.lazySizes=t,"object"==typeof module&&module.exports&&(module.exports=t)}("undefined"!=typeof window?window:{});Links
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