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Convert XLTM File to XLS in C#

The native XLTM file conversion API makes it easy to convert XLTM to XLS in C#, VB.NET, and ASP.NET applications. It supports highly-accurate conversion of popular Excel worksheet formats to and from Word documents (DOC, DOCX), PowerPoint presentations (PPT,PPTX), PDF, Photoshop (PSD, PSB), eBook (EPUB), web (HTML, XML, JSON) and image file formats (JPG, PNG, BMP, PNG) without using any external tool or a third party API. The advanced XLTM document manipulation and conversion features allow you to programmatically add watermarks, select different page numbers or ranges in the source XLTM document that you want to convert; customize the appearance of it and save it as XLS document using a few lines of C# code. The online XLTM to XLS converter tool is free to use and efficiently showcases the conversion functionality inherited in Conholdate.Total for .NET APIs. No registration required – just upload your XLTM file and get your XLS file in seconds.

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Convert XLTM to XLS in .NET

Follow these simple steps to convert XLTM files to XLS in .NET. You can view the converted files as they are, or render and display them as HTML without using any external software.

Get the respective assembly files from the downloads or fetch the whole package from NuGet to add Conholdate.Total for .NET directly in your workspace.

  • Create Converter object to convert XLTM document
  • Set the convert options for XLS format
  • Call Convert method of Converter class instance for conversion to XLS
  • Set options for HTML viewer
  • Create Viewer object to view converted XLS as HTML

Free App for XLTM to XLS Conversion



Convert XLTM to PDF/Word/HTML/PPTX in C#

Convert your XLTM files to other popular documents formats such as PDF, HTML, PowerPoint presentations and Word processing documents using C# .NET code. Load the source XLTM file and save it as a converted document in some other document format such as PDF, DOCX, HTML or PPTX.

  • Create Converter object and pass source XLTM file to it
  • Instantiate the proper ConvertOptions class e.g. (PdfConvertOptions for conversion to PDF, WordProcessingConvertOptions for conversion to Word formats, MarkupConvertOptions for conversion to HTML, PresentationConvertOptions for conversion to PowerPoint formats)
  • Call Convert method of Converter class instance for conversion to PDF/HTML/PPTX or Word document format

Auto-Cache Converted XLS Document

In certain situations, the converted document may have a larger file size and require additional time for conversion. By default, the cached converted documents are stored locally. However, with Conholdate.Total for .NET, you can take advantage of the custom cache implementation feature using the iCache interface. This allows you to efficiently manage and customize the storage of conversion results according to your specific requirements. By implementing this feature, you can significantly improve the repetitive conversion process.

The .NET Excel conversion library offers comprehensive support for converting to and from password protected archives. Additionally, it provides the ability to compress the conversion results into various archive formats, including ZIP, RAR, 7Z, TAR, GZ, and BZ2.


Convert XLTM to XLS with Watermarks

Accurately convert XLTM to XLS exactly as the original source file and apply text or image watermarks to XLS pages using C# .NET.

  • Create Converter object to convert XLTM document
  • Create new instance of WatermarkOptions class
  • Specify watermark properties (color, width, text, image etc)
  • Instantiate the proper ConvertOptions class
  • Set Watermark property of the ConvertOptions instance
  • Call Convert method of Converter class instance for conversion to XLS

Extract XLTM Document Information

Discover valuable file-format specific information using the document information extraction feature. Obtain basic details from the source document file (XLTM) and extract additional data, including project start and end dates from Microsoft Project files, printing restrictions from PDF documents, and a list of enclosed folders from Outlook data files.

Easily convert popular document file formats across various operating systems including Windows, Linux, and macOS. Seamlessly utilize platforms such as Windows Azure, Mono, and Xamarin for efficient document conversions.


Convert JSON File to XLTM in .NET

Converting a JSON file to XLTM in .NET is now easier with Conholdate.Total for .NET APIs. Easily leverage JSON files as data sources and precisely convert them to Excel spreadsheet format (XLTM) using just a few lines of C# code, all without the need for external software.

  • Create Converter object to convert JSON file
  • Instantiate SpreadsheetConvertOptions class
  • Call Convert method of Converter class instance for conversion to XLSX

Remote XLTM Conversion Simplified

With Conholdate.Total for .NET, developers can follow a simple method to load and convert XLTM documents from remote locations and cloud-based document storage resources. Supported sources include Amazon S3, Microsoft Azure Blob, FTP, local disk, stream, and simple URLs. By specifying the appropriate method to obtain the remotely located document stream, programmers can easily pass it on to the Converter class as a constructor, enabling seamless conversion capabilities.

The Conholdate.Total for .NET APIs seamlessly integrate with various application types based on the .NET Framework 2.0 or later, including Windows Forms, ASP.NET, WPF, and WCF. Enjoy the native compatibility and leverage the APIs’ functionality within your preferred .NET application environment.


Frequently Asked Questions (FAQs)

Can I convert XLTM files to XLS online without paying anything?

Yes. You can easily convert XLTM files to XLS online using our completely free converter. It requires no software installation or user registration—just upload your file, convert and download your XLS.

How do I convert XLTM files to XLS using C# code?

Converting XLTM files to XLS using C# is straightforward with the Conholdate.Total for .NET APIs. We provide practical, ready-to-use code samples and clear documentation to simplify the integration into your applications.

Do I need to have Microsoft XLTM installed to perform XLTM-to-XLS conversions with C#?

No. you don’t need Microsoft XLTM installed. Conholdate.Total APIs operate independently, allowing you to convert XLTM documents directly to XLS format within your .NET applications without XLTM itself.

How quickly does your online XLTM-to-XLS converter work?

Our online converter is built for speed and efficiency. Most conversions take just a few seconds—even when dealing with larger or more complex XLTM files.

Will the online converter preserve formulas and hyperlinks from my XLTM files?

Our online XLTM-to-XLS converter keeps all your hyperlinks, images, charts and formatting intact. However, XLTM formulas are converted into their resulting values in the final XLS, ensuring an accurate and readable document.

Can I automate the XLTM-to-XLS conversion on my own servers?

Definitely! You can automate the XLTM-to-XLS conversion process using Conholdate.Total for .NET. It’s perfect for handling batch jobs, scheduled conversions, or integrating seamlessly into your backend workflows.

Is it safe to upload my XLTM files for online XLS conversion?

Your security and privacy are extremely important to us. Uploaded files are securely processed and automatically deleted from our servers shortly afterward, ensuring your data remains confidential.

Can I convert several XLTM sheets into a single XLS using C#?

Yes. you can. Conholdate.Total allows you to select and combine multiple sheets from your XLTM workbook into a single XLS document effortlessly.

Does Conholdate.Total for .NET support batch XLTM files conversion to other formats?

Yes. Conholdate.Total for .NET supports batch conversion of XLTM documents, allowing developers to convert multiple files at once.

Does the XLTM to XLS API work with .NET Core, .NET 5 and newer versions?

Absolutely. Our XLTM-to-XLS conversion API supports all modern .NET frameworks, including .NET Core, .NET 5, .NET 6, and even .NET 7. This gives you flexibility regardless of your project environment.

Can I add watermarks or passwords to XLSs created from XLTM files?

Yes. Conholdate.Total provides convenient features to enhance your XLS documents. You can add watermarks for branding or confidentiality, apply password protection, and even customize other XLS security settings easily during the conversion process.

What file formats for documents and images are supported by Conholdate.Total for .NET?

Conholdate.Total for .NET integrates APIs from Aspose and GroupDocs to enable .NET programmers to perform various document manipulation actions on a wide range of file formats including Word, Excel, PDF, PowerPoint, Visio, HTML and images in .NET, C#, ASP.NET and VB.NET applications.

Can I convert password-protected XLTM files to XLS in .NET?

Yes. Conholdate.Total for .NET supports the conversion of password-protected XLTM files. With built-in methods to handle encrypted documents, you can securely convert sensitive files to XLS while preserving their confidentiality and integrity.

What are the licensing costs for Conholdate.Total’s XLTM to XLS conversion API?

Conholdate.Total for .NET offers a fully functional free trial version for 30 days. Paid plans are available for higher usage levels. Developers should carefully review the pricing and licensing terms before using the document conversion API.

What is XLTM file format?

XLTM is an XML-based file format used by Microsoft Excel to save spreadsheet data. It is an alternative to the XLSX file format, which is the current default format for new spreadsheets created in Excel. XLTM files are especially useful for workbooks that contain macros or other automation code, as they allow the code to be saved along with the data. They provide added security as they can be password protected and also allow for digital signing. XLTM files are not supported by all spreadsheet applications, so it is important to make sure that the file is opened with the program that created it.

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What is XLS file format?

The XLS file format is a file format used by Microsoft Excel, an application for spreadsheet and graphing. It is an updated version of the XLS file format that was introduced in Excel 97. The XLS file format is a spreadsheet format and can be used to store data in cells arranged in a tabular format. It can be used to create charts and graphs, along with other features such as formulas, variables and macros.

XLS files can be protected with passwords and encryption, allowing users to protect sensitive data. They also support multiple sheets, so they can contain large amounts of data. XLS files can be opened and read by a wide variety of software, including Microsoft Excel and other spreadsheet applications.

XLS files are compatible with a variety of operating systems and devices, making them a popular choice for storing, sharing and transferring data. They are usually used for data analysis, report-building, simulations and other business operations.

XLS files are also used for statistical analysis. They are used to visually display data in the form of charts, graphs and tables. They can also be used to store and analyze large amounts of data.

Overall, the XLS file format is an important file format used for storing and sharing data. It is used for data storage, analysis and report-building. It is compatible with a variety of different operating systems and devices, making it a popular choice for businesses.

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Popular XLTM Conversion Options with .NET

Convert XLTM to PDF

(Portable Document Format)

Convert XLTM to WORD

(Word Processing Files)

Convert XLTM to IMAGE

(Digital Image Files)

Convert XLTM to DOC

(Microsoft Word Binary Format)

Convert XLTM to DOCX

(Office 2007+ Word Document)

Convert XLTM to DOCM

(Microsoft Word 2007 Marco File)

Convert XLTM to DOT

(Microsoft Word Template Files)

Convert XLTM to DOTX

(Microsoft Word Template File )

Convert XLTM to DOTM

(Microsoft Word 2007+ Template File)

Convert XLTM to TXT

(Text Document)

Convert XLTM to RTF

(Rich Text Format)

Convert XLTM to HTML

(Hyper Text Markup Language)

Convert XLTM to HTM

(Hypertext Markup Language File)

Convert XLTM to MHTML

(Web Page Archive Format)

Convert XLTM to MHT

(MHTML Web Archive)

Convert XLTM to XLS

(Microsoft Excel Spreadsheet (Legacy))

Convert XLTM to XLSX

(Open XML Workbook)

Convert XLTM to XLSM

(Macro-enabled Spreadsheet)

Convert XLTM to XLSB

(Excel Binary Workbook)

Convert XLTM to XLT

(Excel 97 - 2003 Template)

Convert XLTM to XLTX

(Excel Template)

Convert XLTM to XLTM

(Excel Macro-Enabled Template)

Convert XLTM to XLAM

(Excel Macro-Enabled Add-In)

Convert XLTM to CSV

(Comma Seperated Values)

Convert XLTM to TSV

(Tab Seperated Values)

Convert XLTM to DIF

(Data Interchange Format)

Convert XLTM to SXC

(StarOffice Calc Spreadsheet)

Convert XLTM to FODS

(OpenDocument Flat XML Spreadsheet)

Convert XLTM to PPT

(Microsoft PowerPoint 97-2003)

Convert XLTM to PPTX

(Open XML presentation Format)

Convert XLTM to PPS

(PowerPoint Slide Show)

Convert XLTM to PPSX

(PowerPoint Slide Show)

Convert XLTM to PPSM

(Macro-enabled Slide Show)

Convert XLTM to POT

(Microsoft PowerPoint Template Files)

Convert XLTM to POTX

(Microsoft PowerPoint Template Presentation)

Convert XLTM to PPTM

(Macro-enabled Presentation File)

Convert XLTM to POTM

(Microsoft PowerPoint Template File)

Convert XLTM to ODT

(OpenDocument Text File Format)

Convert XLTM to OTT

(OpenDocument Standard Format)

Convert XLTM to OTP

(OpenDocument Standard Format)

Convert XLTM to ODP

(OpenDocument Presentation Format)

Convert XLTM to ODS

(OpenDocument Spreadsheet)

Convert XLTM to EMZ

(Windows Compressed Enhanced Metafile)

Convert XLTM to WMZ

(Compressed Windows Metafile)

Convert XLTM to SVG

(Scalar Vector Graphics)

Convert XLTM to SVGZ

(Compressed Scalable Vector Graphics)

Convert XLTM to XPS

(XML Paper Specifications)

Convert XLTM to TEX

(LaTeX Source Document)

Convert XLTM to DCM

(DICOM Image)

Convert XLTM to WMF

(Windows Metafile)

Convert XLTM to EMF

(Enhanced Metafile Format)

Convert XLTM to BMP

(Bitmap Image File)

Convert XLTM to PNG

(Portable Network Graphic)

Convert XLTM to GIF

(Graphical Interchange Format)

Convert XLTM to JPEG

(Joint Photographic Expert Group Image)

Convert XLTM to JPG

(Joint Photographic Expert Group Image)

Convert XLTM to TIFF

(Tagged Image File Format)

Convert XLTM to WEBP

(Raster Web Image Format)

Convert XLTM to JP2

(JPEG 2000 Core Image)

Convert XLTM to TGA

(Truevision Graphics Adapter)

Convert XLTM to PSB

(Photoshop Large Document Format)

Convert XLTM to PSD

(Photoshop Document)

Convert XLTM to EPUB

(Open eBook File)

Convert XLTM to MD

(Markdown Language)

Convert XLTM to JSON

(JavaScript Object Notation File)

Convert XLTM to FODP

(Formula One for Data Presentation)

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