NodeJs get size of variable in bytes

Question

I have a variable 'img' which is an image file that has been loaded via:

Click to copy

var img = fs.readFileSync('./tmp.png');

How do I determine how many bytes the 'img' variable is?

Answer 1

Like img is a buffer, you can simply use img.length, it will give you the size in octets (byte of 8bits)