How to tell if lazy loading is working?

Question

Im using a js called blazy and the image loads as i scroll down the page to it. The image shows up in pingdom speed test, should it show up in the speed test tree if lazy loading is working for the image?

Answer 1

Very easy solution:

in Google Chrome open chrome dev tools.

1. Select the Network tab

step one screenshot/image

2. Click on No throttling

step two screenshot/image

3. And then choose how much you want to make the network slower to let Lazy Loading show up (until the data is received)

You can check this way if your app/site lazy loading is working or not.