Spreadsheet Unlocker Tool

Sheetize Spreadsheet Unlocker for .NET empowers developers to strip passwords and sheet‑level locks, enabling full editing or restyling of previously secured workbooks.

Key Features

Unlock Protected Workbooks

Effortlessly remove password restrictions or sheet protections, making the workbook fully editable.

Step‑by‑Step Tutorial

How to Unlock a Locked Workbook

  1. Instantiate the Unlocker – Create a SpreadsheetUnlocker object.
  2. Provide Unlock Details – Supply the password or relevant unlock options.
  3. Define Source and Target Paths – Set the location of the locked file and the destination for the unlocked version.
  4. Execute the Unlock Process – Call the Process method with the configured options.

Sample Code – Unlocking an XLSX File 

var loadOptions = new UnlockerLoadOptions
{
    Password   = "********",
    InputFile  = @"D:\Input.xlsx"
};

var saveOptions = new SaveOptions
{
    OutputFile = @"D:\Output.xlsx"
};

SpreadsheetUnlocker.Process(loadOptions, saveOptions);

This snippet demonstrates how developers can programmatically unlock spreadsheets for further manipulation.

SEO‑Optimized Information

The tool accepts input files in the following formats: Xlsx, Xlsb, Xlsm, Xltm, Xlam, Excel97To2003. Once unlocked, you can export the workbook to a wide range of formats, including Xlsx, Xlsb, Xlsm, Xltm, Xlam, Excel97To2003, Excel95, SpreadsheetML, Xlt, Csv, Tsv, SqlScript, Dif, Xml, Epub, Azw3, Html, MHtml, Json. If your source or target files use different formats, ensure that a compatible Converter license is installed and active.

The Spreadsheet Unlocker is an essential utility for developers needing to modify or repurpose protected Excel files efficiently.

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