The readability of your website depends on your targeted audience.
In most cases, I recommend keeping everything simple to reach the widest audience. In some cases, you may find it better to use a higher level of English:
There are many tools to help you measure readability on websites. Most of the ones I found don’t work. Here are 2 that do:
They will help you make sure you website is easy to understand. If you are a global company, you are probably targeting people that use English as a second language. In this case there are additional considerations:
For more tips on how to increase conversions globally click here