Two of the most popular and free online tools that are used to check a website loading speed and offer suggestions to make it quicker are Google Page Speed and YSlow.
GTmetrix is another tool which combines the Google page speed test and YSlow test to generate a side by side report showing load times and offering recommendations.
To use it :
1. Go to GTMetrix and enter the webpage or website that needs to be tested. Then click “Go” for testing to begin.
2. The result will show a score of both Page Speed and YSlow. It can also be downloaded as a PDF report for reference.
Happy testing.