Yogesh Chauhan's Blog

How to progressively load images and add a blurry placeholder?

in CSS & JavaScript on August 2, 2021

Loading images progressively is very important especially when you have tons of images on your web page.

MDN has a really nice guide on Progressive loading.

Example 1: With CSS blur

Here’s a demo I created using MDN code:

Example 2: Without CSS blur

I created another example that doesn’t actually require you to add CSS blur property.

Here’s what I did.

I load the image with smaller height and width first since your browser will just start downloading the image when it sees the src.


<img loading="lazy" 
  src="https://picsum.photos/id/1016/10/10" 
  data-img="https://picsum.photos/id/1016/200/200" 
  width="200" 
  height="200" 
  class="image" 
  alt="Mountain" 
/>


As you can see, I also have another actual larger image in data-img attribute. That actual image will be fetched using JavaScript.

The idea is to change the src for the images and let browser fetch the images.


Here’s the working example:


Most Read

#1 Solution to the error “Visual Studio Code can’t be opened because Apple cannot check it for malicious software” #2 How to add Read More Read Less Button using JavaScript? #3 How to check if radio button is checked or not using JavaScript? #4 Solution to “TypeError: ‘x’ is not iterable” in Angular 9 #5 PHP Login System using PDO Part 1: Create User Registration Page #6 How to uninstall Cocoapods from the Mac OS?

Recently Posted

#Apr 8 JSON.stringify() in JavaScript #Apr 7 Middleware in NextJS #Jan 17 4 advanced ways to search Colleague #Jan 16 Colleague UI Basics: The Search Area #Jan 16 Colleague UI Basics: The Context Area #Jan 16 Colleague UI Basics: Accessing the user interface
You might also like these
How to calculate elapsed time in JavaScript?JavaScriptWhat is Hoisting in JavaScript?JavaScriptWhat are keys in React?ReactHow to modify the latest post array using get_posts() in WordPress?WordPressWhat are partials in SCSS (Sass)?SCSSWhat’s a Log File and What are Log File Monitors?MiscellaneousHow to draw an SVG path on scroll using JavaScript?JavaScriptObservation of Human Behavior [Shopping Observation Example]MiscellaneousPHP arrays for US states’ full names and abbreviationsPHPIN Operator in PostgreSQLPostgresWhat’s a Strict mode in JavaScript?JavaScriptinclude, include_once, require, require_once in PHPPHP