Everyone wants their website to be friendlier for users and rank better in searches. Now you can quickly see exactly what Google is looking for in terms of how your site delivers pages, both on desktops and on mobile devices.
The neat part is that after running the test (which only takes about 30 seconds for an average business site), Google gives you a report of findings and exactly what you should work on. Just forward that off to your web developer and have them get to work!
You can access the Tester here.