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daniel_puehringer

Simple Image Optimization for SEO Optimization

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Hey,

so we all know about SEO and the importance of performance. Basically we do it, because if no one finds the website we just built, it´s frustrating. We all try to write clean markup, css and js code and most might have a webpack/gulp/whatever pipeline to minimize css&js.
But when thinking about it, optimizing your pipeline might save you a few (hundreds) of kb, compared to loading an image with 1 mb that´s literally nothing and frankly just ridiculous.

Don´t get me wrong, frontend pipelines are great and should be used, but let´s shift your "I will optimize the shit out of that 3 css lines" focus to something different: try to serve images as fast as possible, this is where the performance boost really happens.

I´m no pro on processwire so far, but I built a very easy to use picture element, which some of you could find interesting:

1. the picture comes with 3 different sizes: one for mobile (keep in mind the double dpi, therefore width of 828px), one for tablet and one for desktop

2. the picture generates a webp version and the original file extension as a fallback

3. the filesize of each element is rendered within the "data" attribute

4. lazy loading(sooo important!!!) is done via the native 'loading="lazy"' attribute.


Please try it out and see the difference 🙂

I posted this so others can easily optimize their images, but I would also like to hear your suggestions in making it better. Maybe you could decrease the rendering time or maybe you have some easy improvements.

Please let me know.

Greetings from Austria!



 

<picture>
    <source data="<?php echo($oElement->repeater_image->width(828)->webp->filesize);?>" media="(max-width: 414px)" srcset="<?php echo($oElement->repeater_image->width(828)->webp->url) ?> 2x" type="image/webp">
    <source data="<?php echo($oElement->repeater_image->width(828)->filesize) ?>" media="(max-width: 414px)" srcset="<?php echo($oElement->repeater_image->width(828)->url) ?> 2x" type="image/<?php echo($oElement->repeater_image->ext)?>">
    <source data="<?php echo($oElement->repeater_image->width(767)->webp->filesize) ?>" media="(min-width: 415) and (max-width: 767px)" srcset="<?php echo($oElement->repeater_image->width(767)->webp->url) ?> 2x" type="image/webp">
    <source data="<?php echo($oElement->repeater_image->width(767)->filesize) ?>" media="(min-width: 415) and (max-width: 767px)" srcset="<?php echo($oElement->repeater_image->width(767)->url) ?> 2x" type="image/<?php echo($oElement->repeater_image->ext)?>">
    <source data="<?php echo($oElement->repeater_image->webp->filesize) ?>" media="(min-width: 768px)" srcset="<?php echo($oElement->repeater_image->webp->url) ?>" type="image/webp">
    <source data="<?php echo($oElement->repeater_image->filesize) ?>" media="(min-width: 768px)" srcset="<?php echo($oElement->repeater_image->url) ?>" type="image/<?php echo($oElement->repeater_image->ext)?>">
    <img data="<?php echo($oElement->repeater_image->filesize) ?>" class="img-fluid" loading="lazy" src="<?php echo($oElement->repeater_image->url) ?>" alt="<?php echo($oElement->repeater_image->description) ?>" type="image/<?php echo($oElement->repeater_image->ext)?>">
</picture>
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