I’m working with a confidential spreadsheet and I don’t want to upload it to any online converter or editor.

Process and edit spreadsheets locally on your device so sensitive data never needs to be uploaded to an online converter or editor. This helps you maintain confidentiality while still completing common spreadsheet tasks quickly and safely.

This feature enables you to work with confidential spreadsheets entirely offline, keeping files and data on your local device. It supports common spreadsheet workflows—such as opening, viewing, editing, and saving—without requiring any upload to third-party web tools. By avoiding online converters and editors, it reduces the risk of accidental data exposure and helps meet internal security policies. The feature is designed for privacy-sensitive environments where internet access may be restricted or monitored. You can use it to prepare reports, clean data, or make last-minute updates while maintaining full control of the file. It is especially useful when handling customer records, financial statements, HR data, legal documents, or proprietary business information. Local processing can also improve reliability by eliminating dependency on network connectivity and website availability. The workflow is straightforward: open the spreadsheet locally, perform your required changes or transformations, and save the updated file in the needed format. Overall, it provides a secure and convenient way to complete spreadsheet tasks without sharing confidential content online.