Load Image

index.html

<script src="https://cdn.jsdelivr.net/npm/p5@0.10.2/lib/p5.js"></script>
<script src="https://cdn.jsdelivr.net/gh/georgesb/lib/drawGrid.js"></script>
<script src="script.js"></script>

script.js

let img;
    
function preload() {
  img = loadImage('https://upload.wikimedia.org/wikipedia/commons/thumb/4/4d/Cat_November_2010-1a.jpg/180px-Cat_November_2010-1a.jpg');
} 
    
function setup(){  
   createCanvas(650,450);      
   drawGrid();  
   image(img,100,100);
}
       

thumbnail.png