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Free online XLS to XLSX conversion App via net

Use free online app or Net SDK to convert between XLS & XLSX as well as several popular formats from Microsoft® Excel.

How to Convert XLS to XLSX on Net: Step-by-Step Code Example

// Converting XLS to HTML
CellsApi cellsApi = CellsApi(clientId, clientSecret);

string name = "file.XLS";
SaveOptions saveOptions = new SaveOptions;
svaeOption.setSaveFormat("HTML");
string newfilename = name;
bool? isAutoFitRows = true;
bool? isAutoFitColumns = true;
string folder = null;
var response = cellsApi.CellsSaveAsPostDocumentSaveAs(name, saveOptions, newfilename, isAutoFitRows, isAutoFitColumns, folder);
Console.WriteLine(response);

// Converting HTML to XLSX
CellsApi cellsApi = CellsApi(clientId, clientSecret);

string name = "file.HTML";
SaveOptions saveOptions = new SaveOptions;
svaeOption.setSaveFormat("XLSX");
string newfilename = name;
bool? isAutoFitRows = true;
bool? isAutoFitColumns = true;
string folder = null;
var response = cellsApi.CellsSaveAsPostDocumentSaveAs(name, saveOptions, newfilename, isAutoFitRows, isAutoFitColumns, folder);
Console.WriteLine(response);

Transform XLS into XLSX with the Net Cloud SDK

  1. Initialize WordsApi and CellsApi with Client Id, Client Secret, Base URL & API version
  2. Set ConvertDocumentRequest with parameters local file name and format as HTML
  3. Call WordsApi convertDocument to convert XLS document to HTML
  4. Initialize SaveOption from CellsAPI with parameters SaveFormat as XLSX
  5. Call cellsSaveAsPostDocumentSaveAs method to convert XLS file to XLSX

Start leveraging Aspose.Total REST APIs for XLS to XLSX

  1. Create an account at Dashboard to get free API quota & authorization details
  2. Get Aspose.Words and Aspose.Cells Cloud SDKs for Net source code from Aspose.Words GitHub and Aspose.Cells GitHub repos to compile/use the SDK yourself or head to the Releases for alternative download options.
  3. Also have a look at Swagger-based API Reference for Aspose.Words and Aspose.Cells to know more about the REST API.

How to Convert Excel XLS to other formats online

Transform XLS files into HTML format using Aspose.Cells API, and seamlessly integrate them with any Aspose.Total APIs, such as Aspose.Words, Aspose.PDF, Aspose.Email, Aspose.Slides, Aspose.Diagram, Aspose.Tasks, Aspose.3D, Aspose.HTML. This enables conversion of your files into hundreds of different formats.

For a complete list of supported formats, visit the Aspose.Total Cloud page.

How to Convert MS Excel Spreadsheets, XLS to Image Formats

Aspose.Cells Cloud SDK provides quick and easy solutions for converting MS Excel files into various image formats, similar to the process demonstrated above for XLSX. Whether you use direct REST API calls or SDKs, Aspose.Cells Cloud APIs enable you to convert Excel sheets into multiple image formats, including JPEG, PNG, BMP, GIF, and TIFF.

  1. Create SaveOption object and set desire format using SaveFormat property.
  2. Create ConvertDocumentRequest object to convert XLS document
  3. Call SaveAsPostDocument method of CellsApi class instance for conversion from XLS

Simple Steps to Convert XLS to PDF Online

For XLS to PDF please follow these steps:

  1. Visit the XLS to PDF webpage.
  2. Upload your XLS file from your device.
  3. Click on the “Convert” button.
  4. Wait for the conversion to finish.
  5. Once the conversion is complete, download the PDF file to your device.

How to Convert Webpage to XLSX format

To convert a webpage to the XLSX format, follow these steps:

  1. Visit the “Webpage to XLSX” website.
  2. Enter the URL of the webpage you wish to convert into the designated input box.
  3. Click the “Convert” button to initiate the conversion process.
  4. Wait for the conversion to complete.
  5. Download the XLSX file to your device once the conversion is finished.

By following these steps, you can easily convert and download webpages in the desired XLSX format for offline access and further use.

FAQ

  • What is XLS Format?
    Files with XLS extension represent Excel Binary File Format. Such files can be created by Microsoft Excel as well as other similar spreadsheet programs such as OpenOffice Calc or Apple Numbers. File saved by Excel is known as Workbook where each workbook can have one or more worksheets. Data is stored and displayed to users in table format in worksheet and can span numeric values, text data, formulas, external data connections, images, and charts. Applications like Microsoft Excel lets you export workbook data to several different formats including PDF, CSV, XLSX, TXT, HTML, XPS, and several others. The XLS file format was replaced with a more open and structured format, XLSX, with the release of Microsoft Excel 2007. The latest versions still provide support for creating and reading XLS files, though XLSX is the first choice of use now.
  • What is XLSX Format?
    XLSX is well-known format for Microsoft Excel documents that was introduced by Microsoft with the release of Microsoft Office 2007. Based on structure organized according to the Open Packaging Conventions as outlined in Part 2 of the OOXML standard ECMA-376, the new format is a zip package that contains a number of XML files. The underlying structure and files can be examined by simply unzipping the .xlsx file.
  • Starting with Aspose.Total REST APIs Using Net SDK: A Beginner's Guide
    Quickstart not only guides through the initialization of Aspose.Total Cloud API, it also helps in installing the required libraries.
  • Where can I find the Aspose.Total Cloud API release notes for Net?
    Complete release notes can be reviewed at Aspose.Total Cloud Documentation.
  • Is it safe to convert XLS to XLSX in the Cloud?
    Of course! Aspose Cloud uses Amazon EC2 cloud servers that guarantee the security and resilience of the service. Please read more about Aspose's Security Practices.
  • What file formats are supported by Aspose.Total Cloud API?
    Aspose.Total Cloud can convert file formats from any product family to any other product family to PDF, DOCX, XPS, image(TIFF, JPEG, PNG BMP), MD and more. Checkout the complete list of supported file formats.
  • I can not find the SDK for my favorite language. What should I do?
    Aspose.Total Cloud is also available as a Docker Container. Try using it with cURL in case your required SDK is not available yet.