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

Remove Digital Signatures from XLSX in C#

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

Instantiate Signature with input (XLSX) document
Instantiate DigitalSearchOptions object with needed properties
Call Search method and get list of DigitalSignatures
Select digital signatures to remove from (XLSX) 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 XLSX in C#

The .NET signature API supports manipulating and removing barcode and QR-Code signatures from XLSX 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 (XLSX) document
Instantiate BarcodeSearchOptions object with needed properties
Call Search method and get list of BarcodeSignature
Select barcode signatures to remove from (XLSX) document
Call Signature object Delete method and pass sigantures to it

XLSX Document Information Extraction

The documents information extraction API not only allows getting the basic information about the source document file (XLSX) 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 XLSX

Deleting text or image signatures from digitally signed XLSX 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 (XLSX) document
Instantiate TextSearchOptions object with needed properties
Call Search method and get list of TextSignatures
Select text signatures to remove from (XLSX) 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 XLSX file format?

The XLSX file format is a widely used file format for storing spreadsheet data. It was introduced by Microsoft as part of their Microsoft Office suite, specifically for the Excel application. XLSX stands for Excel Open XML Spreadsheet. Unlike its predecessor, the XLS format, which was based on a proprietary binary file structure, XLSX is based on the Open XML file format.

XLSX files are structured as a collection of XML files compressed into a single ZIP archive. This XML-based structure allows for more efficient storage and faster data processing. XLSX files store data in a tabular format, with rows and columns that can contain text, numbers, formulas, and other types of data. They also support formatting options such as cell styles, fonts, colors, and conditional formatting.

One of the advantages of the XLSX format is its compatibility across different platforms and software applications. Many spreadsheet programs, including Microsoft Excel, Google Sheets, and LibreOffice Calc, can open and edit XLSX files. This makes it easy to share and collaborate on spreadsheet data with others, regardless of the software they are using.

XLSX files also offer features like data validation, filtering, sorting, and the ability to create charts and graphs based on the data. Additionally, XLSX files can contain multiple sheets within a single file, allowing users to organize and manage different sets of data within a single document.

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Remove Signatures from XLSX File in C# .NET