- Extension
- .rb
- .xlsx
- Format
- Text
- Binary
- Category
- Ebook
- Spreadsheet
- Developer
- NuvoMedia
- Microsoft
- Description
- RB is an eBook file format that was developed by NuvoMedia. It was first used in Nuvo Media’s Rocket eBook device. It contains the contents of the book in HTML form.
- An XLSX file is an Excel spreadsheet created by Microsoft Excel or another spreadsheet program, such as OpenOffice Calc or Apple Numbers. It stores data in worksheets, which contain cells arranged in a grid of rows and columns, and may also contain charts, mathematical functions, styles, and formatting. XLSX files are commonly used to store financial data and to create simple or complex mathematical models.
- MIME Type
- application/x-rocketebook
- application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
