Slow speeds or an intermittent connection are big enough problems for you to know that there's something wrong with your internet. If you want to know exactly what's wrong, there are tons of free tools out there that can help you out. Think of it as step one: your speed test might be hiding what actually makes your internet feel slow. Screenshot by Yadullah Abidi | No Attribution Required. They offer free tiers which include most tools you'll need for diagnosing a spotty connection at home.