Many professionals need to quickly edit Office files in the browser but find Google's built-in tools too basic.
Build a Chrome extension that adds advanced formatting, collaboration, and export options to the web-based Office editing experience.
Business teams and freelancers would pay for premium features that save them from switching to desktop apps.
The MVP could focus on adding just one missing feature like track changes or advanced templates.
The biggest risk is Google deprecating or changing their Office editing APIs.