Remove Barcode, Image, Text, Digital Signatures in XLSM in C# .NET

Remove Digital Signatures from XLSM in C#

Search and remove all or certain types of e-signatures from digitally secured and signed XLSM files at once using Conholdate.Total for .NET APIs.

Instantiate Signature with input (XLSM) document
Instantiate DigitalSearchOptions object with needed properties
Call Search method and get list of DigitalSignatures
Select digital signatures to remove from (XLSM) document
Call Signature object Delete method and pass sigantures to it

Download & Install .NET Signature API

Deleting signatures from digitally signed documents requires GroupDocs.Signature namespace. Proceed to download the respective files or fetch the whole package directly from NuGet.

Remove any type of Barcode, Text, Image, or QR Code signatures from documents using operating systems such as Windows, Linux or macOS while working on Windows Azure, Mono and Xamarin platforms.

Remove Barcode Signatures from XLSM in C#

The .NET signature API supports manipulating and removing barcode and QR-Code signatures from XLSM documents in .NET applications using a few lines of C# code. Remove one or several digital signatures of different types from signed documents at the same time.

Instantiate Signature with input (XLSM) document
Instantiate BarcodeSearchOptions object with needed properties
Call Search method and get list of BarcodeSignature
Select barcode signatures to remove from (XLSM) document
Call Signature object Delete method and pass sigantures to it

XLSM Document Information Extraction

The documents information extraction API not only allows getting the basic information about the source document file (XLSM) but it also supports extracting some valuable document information such as file type, size, number of pages, height and width using stream or a file stored on local disk.

The .NET document signature library offers a set of useful features to cancel digital signature processes (sign, verify, search) at any stage using a few simple steps.

Remove Text & Image Signatures from XLSM

Deleting text or image signatures from digitally signed XLSM files in C# .NET is easier with Conholdate.Total for .NET APIs. Sign digital documents with custom signatures using different colors, font, padding and styling options.

Instantiate Signature with input (XLSM) document
Instantiate TextSearchOptions object with needed properties
Call Search method and get list of TextSignatures
Select text signatures to remove from (XLSM) document
Call Signature object Delete method and pass sigantures to it

Load & Sign Remotely Located Documents

The document eSign API enables you to render remotely located documents from various cloud document storage sources such as stream, local disk, URL, FTP, Amazon S3, and Azure Blob storage. The document preview feature enables you to get the image representation of the document pages that can be useful to preview and adjust the position of digital signature inside the document.

Get the document preview of whole document or some specific page numbers in PNG, JPG or BMP image formats.

What is XLSM file format?

The XLSM file format is an extension of the XLSX file format used for Microsoft Excel workbooks. Similar to XLSX, it is based on the Open XML file format and is associated with the Excel application. The “M” in XLSM stands for “macro-enabled”, indicating that it supports the inclusion of macros.

XLSM files store spreadsheet data, including worksheets, formulas, charts, and other elements commonly found in Excel workbooks. Additionally, XLSM files allow the embedding of VBA (Visual Basic for Applications) macros within the workbook. Macros are scripts written in VBA that automate tasks, perform calculations, and interact with the spreadsheet data.

By including macros in XLSM files, users can create customized functions, automate repetitive tasks, and enhance the functionality of their Excel workbooks. Macros can be written to manipulate data, generate reports, perform complex calculations, or interact with other applications.

When opening an XLSM file, Excel prompts the user to enable or disable macros due to security concerns. Enabling macros allows the embedded VBA code to execute, while disabling macros prevents potential security risks associated with malicious code.

XLSM files provide advanced features and customization options for Excel users who require automation beyond the capabilities of the standard XLSX format. They are commonly used in business environments, financial modeling, data analysis, and other scenarios where complex calculations and automation are necessary.

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Remove Signatures from XLSM File in C# .NET