Convert XLS to XLSX via Free App or Ruby

GroupDocs.Conversion Cloud for Ruby and Free Apps have been developed to help you get started with Document Conversion REST API. It not only allows you to convert between Excel Spreadsheet (XLS) & Microsoft Excel Open XML Spreadsheet (XLSX) file formats but over 153 types of documents from Microsoft Office, OpenDocument, Adobe, AutoCAD, PDF, image and many other popular categories.

Convert XLS to XLSX via Ruby

Free conversion Apps for Popular Formats

XLS to HTML XLS to HTM XLS to MHT XLS to MHTML XLS to XLS XLS to XLSX XLS to XLSM XLS to XLSB XLS to ODS XLS to XLTX XLS to XLT XLS to XLTM XLS to TSV XLS to XLAM XLS to CSV XLS to FODS XLS to DIF XLS to SXC XLS to XML XLS to JSON XLS to PDF XLS to EPUB XLS to XPS XLS to TEX

How to convert XLS to XLSX

  • Select the file by clicking the XLS to XLSX App or simply drag & drop a XLS file.
  • Click the Convert button to upload XLS and convert it to a XLSX file.
  • Click on the Save button when it appears after successful XLS to XLSX format conversion.
  • That is all! You can use your converted XLSX document as needed.

Frequently Asked Questions (FAQ)

Can I try XLS to XLSX conversion for free?

GroupDocs.Conversion Cloud App is completely free. You can convert as many XLS files to XLSX as you may like. If you are a developer and want to integrate this feature in your own app, you can try GroupDocs.Conversion Low-Code APIs without any limitations.

I do not want to upload my confidential XLS or XLSX files anywhere? What are my options?

GroupDocs.Conversion Cloud is also available as Docker image which can be used to self-host the service. Or you may build your own services using GroupDocs.Conversion High-code APIs which currently drive both XLS and XLSX Free Conversion App and REST APIs.

I want to create my own app that can convert XLS to XLSX?

Check our SDKs at GitHub if you are looking for the source code to convert XLS file format to XLSX in the Cloud.

Advanced XLS and Document Conversion API Features

Convert XLS to XLSX page by page or custom range of pages

XLS conversion APIs are secured and require authentication

Password protect XLSX output document

Convert XLS across all common formats

Watermark XLS pages

XLS conversion API explorer based on swagger collection

Free Apps to Convert XLS to Multitude of Document Formats beside XLSX

GroupDocs.Conversion REST API has the capability to perform document conversions on a number of document formats. It converts accurately making sure that the details are preserved while converting the document.

API Explorer

The easiest way to try out GroupDocs.Conversion Cloud API right away in your browser is by using GroupDocs Cloud Web API explorer, which is a collection of Swagger documentation for the GroupDocs Cloud APIs.It allows you to effortlessly interact and try out every single operation our APIs exposes.

Security and Authentication

The GroupDocs.Conversion Cloud API is secured and requires authentication. You need to register at GroupDocs Cloud and get the app access key ID (appSID) and app secret access key. Authenticated requests require a signature and AppSID query parameters or OAuth 2.0 authorization header.

Free Apps to Get Started and convert XLS to XLSX in No Time

With GroupDocs.Conversion Cloud API, you can start converting your files right away as there is no need to install anything. The API is clearly documented and comes with SDKs and live examples for all major languages. Our GroupDocs.Conversion SDKs along with working examples hosted at Github helps our users to get started in no time.

Free online conversion Apps for XLS

Convert unlimited documents and images using our Free online conversion Apps

Support and Learning Resources

Convert XLS to XLSX using SDKs in other popular languages

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