Too little information...


Mac OS and Word version/release?
What are you expecting to happen?
What happens instead? Details!
Screenshots?
How to attach a screenshot in this forum
Attach a Sample File Demonstrating the Problem - Here's How


Why do you need to convert to html? Word handles font changes, etc., without conversion.

What is the current file format when you receive the file?


Document conversion always loses information and creates formatting anomalies even if the result looks fine.