Medium like image loading in Hugo

Hugo

Quick walkthrough of strategy

Initially when page is loading browser request image as well(provided in src tag)

• We will provide only 2px image placeholder of original image
• using css will make medium like effect on image
• using js, when original image arrives after t ms will replace placeholder image with original one.

I assume you’re using a Hugo theme and you want to add this feature in the theme. Even if it’s not a theme it will still work just you need to keep files in layouts/** directory rather than themes/THEME/layouts/**

create shortcode inside themes/THEME/layouts /shortcodes/SHORTCODENAME.html

In my case SHORTCODENAME is lazyImage

JS

this code should run, so place it in any JS file you want!

CSS

similar to JS put wherever you like…

Usage

now in content/**/**.md

{{ < lazyImage src=”images/someimage.jpg” > }}
{{ < lazyImage width=”30rem” height=”10rem” src=”images/someimage.jpg” > }}
{{ % lazyImage src=”images/someimage.jpg” % }}
{{ % lazyImage width=”30rem” height=”10rem” src=”images/someimage.jpg” % }}

Note

• This doesn't include images in /static/img/** folder
• Image should be at same/below level w.r.t markup file

Eg.

reference(s)

• medium like lazy loading of images
• lazy loading images complete guide
• Intersection observation api

For any queries, Do let me know in comments down below.

Thankyou, peace out 😄

Originally published at https://itsjwala.github.io/2019/08/31/medium-like-image-loading-in-hugo/