XLTX to XLS Online Converter | Free App & Android Cloud API

GroupDocs.Conversion Cloud is a reliable REST API designed specifically for Android developers who need to convert Word documents (XLTX) to XLS effortlessly. With support for over 153 document and image formats, our API allows you to integrate powerful conversion capabilities into your applications without the need for additional software like Microsoft Office or Adobe Acrobat Reader. Whether you’re working on Windows, macOS, Linux, or any other platform, GroupDocs.Conversion Cloud ensures seamless and accurate document transformations anytime, anywhere.

Our API offers unparalleled flexibility, allowing you to customize your XLTX to XLS conversions to fit your specific requirements. You can choose to convert entire documents, select specific pages, or define custom page ranges. Additionally, you have control over the output quality and resolution, enabling you to produce high-quality XLS files tailored to your project’s standards. For added functionality, you can include watermarks or password-protect your XLS files to ensure document security and integrity.

GroupDocs.Conversion Cloud enforces strict security measures. Conversion requests for XLTX to XLS are validated using unique Client ID and Secret credentials, preventing unauthorized access. Documents remain protected throughout processing, and all conversions are completed with consistency and confidentiality.

Integrating GroupDocs.Conversion Cloud into your Android applications is straightforward thanks to our comprehensive SDKs. Our Android SDK provides clear and concise documentation, along with practical examples, making it easy for you to get started quickly. Whether you’re building a simple script or a complex application, our SDKs streamline the integration process, allowing you to add XLTX to XLS conversion functionality with minimal effort. Additionally, our API Explorer tool lets you test and experiment with the API directly in your browser, helping you understand its capabilities and how to implement them effectively.

GroupDocs.Conversion Cloud supports all major platforms like .NET, Java, PHP, Ruby, Python, Android, Go, JavaScript and cURL. Whether you’re building web, desktop or mobile apps, the API is easy to integrate, supports batch processing and flexible conversion options for real-world development needs.


  • Convert XLTX to XLS via Free App or .NET
  • Convert XLTX to XLS via Free App or Node.js
  • Convert XLTX to XLS via Free App or cURL
  • Convert XLTX to XLS via Free App or Ruby
  • Convert XLTX to XLS via Free App or Python
  • Convert XLTX to XLS via Free App or PHP
  • Convert XLTX to XLS via Free App or Go
  • Convert XLTX to XLS via Free App or Java

XLTX to XLS Conversion via Android REST APIs

Free conversion Apps for Popular Formats

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

How to convert XLTX to XLS

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

Frequently Asked Questions (FAQ)

May I use GroupDocs.Conversion Cloud Free Apps for commercial purposes?

GroupDocs.Conversion Cloud Free Apps are primarily for evaluation and testing purposes. For commercial use, consider upgrading to a paid subscription plan for full features and support.

Can I integrate GroupDocs.Conversion Cloud into my CI/CD pipeline for automated document conversions?

Yes, the API is built to support automation workflows. You can easily integrate it into your CI/CD pipeline using the available SDKs for .NET, Java, PHP, Ruby, Android, Go, Python and other platforms. This allows you to trigger document conversions automatically during builds, deployments or post-processing steps.

Can I add my own watermark when converting XLTX file to XLS in Android?

Yes, you can. The API lets you add your own text or image watermark to the XLS while converting. It’s a great way to include your branding add copyright notices, or mark documents as confidential.

Does GroupDocs provide support for technical issues related to GroupDocs.Conversion Cloud Free Apps?

GroupDocs offers technical support for Free Apps users to help resolve any issues or answer questions related to the GroupDocs.Conversion Cloud platform.

Is there a limit on the number of conversions I can perform using GroupDocs.Conversion Cloud APIs?

GroupDocs.Conversion Cloud APIs offer flexible conversion limits based on your subscription plan. Contact GroupDocs support for more information on conversion limits.

How can I access GroupDocs.Conversion Cloud Free Apps?

GroupDocs.Conversion Cloud Free Apps can be accessed directly from the GroupDocs website or through the GroupDocs web or mobile applications.

How do I convert only specific pages or a page range from XLTX to XLS?

GroupDocs.Conversion Cloud allows you to define custom page ranges for conversion. You can select specific pages (e.g., 1, 3, 5) or page ranges (e.g., 2–6) using the Pages parameter in your API request.

Are there any limitations to the features available in GroupDocs.Conversion Cloud Free Apps?

GroupDocs.Conversion Cloud Free Apps may have limitations on the number of conversions, file size, or output formats compared to the paid subscription plans.

How does GroupDocs.Conversion Cloud handle large sized XLTX files in Android during conversion?

GroupDocs.Conversion Cloud is built to handle large XLTX files smoothly. Whether you are working with a small document or one that is several gigabytes in size, the API keeps conversions fast and accurate without hitting performance issues.

Can I automate bulk XLTX to XLS conversions using GroupDocs.Conversion Cloud APIs?

All of the GroupDocs.Conversion Cloud APIs allow batch processing and conversion of individual XLTX files to XLS in one API call. This feature is quite useful for enterprises working with large document workloads.

Are there any SDKs available for GroupDocs.Conversion Cloud APIs?

GroupDocs.Conversion Cloud provides SDKs for various programming languages such as .NET, Java, Android, PHP, Node.js, Python, Ruby, cURL and Go, making it easy to integrate into different development environments.

Does GroupDocs.Conversion Cloud provide OCR when converting scanned XLTX files to XLS?

Yes. you can use OCR (Optical Character Recognition) in GroupDocs.Conversion Cloud API Settings when converting scanned XLTX files to searchable XLS files. GroupDocs will automatically search for any scanned images in your XLTX files, enable OCR based on your preference, extract and convert the text into a searchable XLS.

Is there a mobile SDK available for building Android apps?

Yes. GroupDocs Cloud offers a native Android SDK, the Conversion Cloud SDK for Android, enabling developers to directly integrate document processing capabilities into their Android applications.

Can I customize output formats (e.g., adjust image quality, PDF compression, or page ranges)?

Yes, the APIs provide advanced customization options, such as setting image quality for PDFs, specifying page ranges for conversion, and adjusting compression levels. Refer to the documentation for details.

How reliable is the performance of GroupDocs.Conversion Cloud Free Apps?

GroupDocs.Conversion Cloud Free Apps offer reliable performance and high-quality output for your conversion needs, ensuring a seamless experience.

Does the API support integration with cloud storage providers like AWS S3, Azure Blob, or Google Drive?

Absolutely. GroupDocs.Conversion Cloud offers built-in integration with popular cloud storage platforms, allowing direct file retrieval and output saving without intermediate uploads.

How accurate is the conversion for complex layouts (e.g., tables, embedded fonts)?

Our engine maintains the original formatting with 99% accuracy, particularly for tables and vector graphics; however, in edge cases, fallback rules may be customized.

What file formats are supported by GroupDocs.Conversion Cloud APIs?

GroupDocs.Conversion Cloud APIs support a wide range of file formats including Word, Excel, PDF, and more. Refer to the documentation for the full list of supported formats.

Can I preview a XLTX file before converting it to XLS using the API?

Yes. GroupDocs.Conversion Cloud supports document preview feature before conversion. This helps ensure layout accuracy, check formatting and make informed decisions before committing the final conversion.

How secure is the conversion process in GroupDocs.Conversion Cloud?

GroupDocs.Conversion Cloud ensures a secure conversion process by encrypting data in transit and at rest, and by following industry-standard security protocols.

What XLTX to XLS Conversion API can do?

XLTX conversion APIs are secured and require authentication

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

XLTX conversion API explorer based on swagger collection

Watermark XLTX pages

Convert XLTX across all common file formats

Password protect XLS output document

File Format Conversion

Convert documents between various file formats such as Word, Excel, PDF, and more.

Compliance and Security

Ensure compliance with data security regulations and industry standards.

Document Watermarking

Add watermarks to converted documents for branding or security purposes.

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.

Free Apps to Get Started and convert XLTX to XLS 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.

Scalable Performance

Efficiently convert large volumes of documents with high performance and reliability.

Secure Conversion Process

Securely convert documents without exposing sensitive data to third parties.

Comprehensive Documentation

Access detailed documentation and support resources for easy implementation.

Scheduled Conversions

Schedule conversions at a convenient time to optimize resource utilization.

Free online conversion Apps for XLTX

Convert unlimited documents and images using our Free online conversion Apps

Customizable Output Formats

Choose from a variety of output formats to meet specific needs.

Version Control

Maintain version control of documents through efficient conversion processes.

Batch Conversion

Convert multiple documents simultaneously for improved productivity.

OCR Support

Benefit from Optical Character Recognition (OCR) to convert scanned documents into editable formats.

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

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.

Document Preview

Preview documents before conversion to ensure desired output.

API Integration

Easily integrate conversion capabilities into your applications using APIs.

Cloud-Based Solution

Access the conversion services from anywhere with internet connectivity.

High-Quality Output

Maintain the quality of the converted documents with accurate formatting and layout.

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.

Configurable Conversion Options

Customize conversion settings such as conversion quality, page range, and more.

User-Friendly Interface

Intuitive interface for seamless navigation and operation.

Collaborative Workflows

Facilitate collaboration by converting documents for sharing and editing.

Document Metadata Preservation

Retain important metadata during the conversion process for better document management.

Support and Learning Resources

Learning Resources

Product Support

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Download GitHub Repository

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