For user's it doesn't matter how we do the stuff under the hood. You can run a quick speed test on top of any websites you are currently visiting by just one c

For user's it doesn't matter how we do the stuff under the hood. You can run a quick speed test on top of any websites you are currently visiting by just one click of a button. (It's running in a popup window) How can you offer this feature to users without an Extension. or is there is a way? as far as i know there is no other WAY.