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Lock a Workbook Online to Make It Read-Only

Always open read-only to prevent accidental changes by requiring readers to select edits.

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Aspose.Cells for .NET Aspose.Cells Protect Excel

Secure your sheets and shield your entire Excel file with confidence. Dive into the steps to password-protect both Excel files and spreadsheets, guaranteeing the confidentiality of your valuable data. Unearth effective strategies to reinforce your Excel sheets against unauthorized access.

  • Protect XLS, XLSX, XLSM, XLTX, XLTM, XLSB, ODS, NUMBERS
  • Lock Excel sheets for viewing.
  • Protect Excel files from editing.
  • Set Excel readonly.

How to set Excel files readonly

  • Upload the Excel file you want to set to readonly mode.
  • Press the "READONLY" button.
  • Download the result file now or send the download link to an email.
Note that file will be deleted from our servers after 24 hours and download links will stop working after this time period.
Fast and Easy Readonly

Fast and Easy Readonly

Upload your excel file, and click the "READONLY" button. Wait a moment and you will get your protected files instantly.

Readonly from anywhere

Readonly from anywhere

Works from all platforms including Windows, Mac, Android and iOS. All files are processed on our servers. No plugins or software installation required for you.

Readonly Quality

Readonly Quality

Powered by Aspose.Cells . All files are processed using Aspose APIs, which are being used by many Fortune 100 companies across 114 countries.

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