I want to add a CSS class "myimg" to every image both inside and outside of a post. What is the best way to approach this?

2 Answers 2

function add_image_class($class){
    $class .= ' additional-class';
    return $class;

Try to use this j query function like this in header file

$(document).ready(function() {
  • is there a way to do this via PHP or a WP function rather than JS?
    – manc
    Aug 3, 2013 at 9:59
  • The better way is not php or wordpress for all images. Aug 3, 2013 at 10:04

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