Free OTS to PDF Conversion in cURL | Top REST APIs & Apps 2024

GroupDocs.Conversion Cloud is a reliable REST API designed specifically for cURL developers who need to convert Word documents (OTS) to PDF 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 OTS to PDF 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 PDF files tailored to your project’s standards. For added functionality, you can include watermarks or password-protect your PDF files to ensure document security and integrity.

Security is a top priority with GroupDocs.Conversion Cloud. Every conversion request is authenticated using a unique Client ID and Client Secret, ensuring that your data remains protected throughout the process. Our robust authentication mechanisms safeguard your documents, giving you peace of mind when handling sensitive information. You can trust that your OTS to PDF conversions are handled securely and reliably, maintaining the confidentiality and integrity of your data.

Integrating GroupDocs.Conversion Cloud into your cURL applications is straightforward thanks to our comprehensive SDKs. Our cURL 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 OTS to PDF 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.


  • Convert OTS to PDF via Free App or Android
  • Convert OTS to PDF via Free App or Java
  • Convert OTS to PDF via Free App or Ruby
  • Convert OTS to PDF via Free App or .NET
  • Convert OTS to PDF via Free App or PHP
  • Convert OTS to PDF via Free App or Node.js
  • Convert OTS to PDF via Free App or Python

OTS to PDF Conversion via cURL REST APIs

Free conversion Apps for Popular Formats

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

How to convert OTS to PDF

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

Frequently Asked Questions (FAQ)

What are the benefits of using GroupDocs.Conversion Cloud Free Apps?

GroupDocs.Conversion Cloud Free Apps offer a convenient way to test and experience the conversion capabilities before committing to a subscription plan.

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

Yes, GroupDocs provides SDKs for various programming languages to help you easily integrate and use the Conversion Cloud APIs in your applications.

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.

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.

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.

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.

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.

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.

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 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.

How can I integrate GroupDocs.Conversion Cloud APIs into my application?

Integrate GroupDocs.Conversion Cloud APIs seamlessly with your application by following the API documentation and integration guides provided on the GroupDocs website.

What OTS to PDF Conversion API can do?

OTS conversion API explorer based on swagger collection

Watermark OTS pages

Password protect PDF output document

Convert OTS to PDF page by page or custom range of pages

OTS conversion APIs are secured and require authentication

Convert OTS across all common formats

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.

Collaborative Workflows

Facilitate collaboration by converting documents for sharing and editing.

Convert password protected OTS spreadsheets to PDF document

If your OTS spreadsheets are password protected, you can directly convert them to PDF document without first removing the password.

Cloud-Based Solution

Access the conversion services from anywhere with internet connectivity.

Convert individual sheets from OTS spreadsheet into PDF pages

Convert your OTS spreadsheet into PDF document while placing each sheet on separate pages

Batch Conversion

Convert multiple documents simultaneously for improved productivity.

Free online conversion Apps for OTS

Convert unlimited documents and images using our Free online conversion Apps

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.

Configurable Conversion Options

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

Document Watermarking

Add watermarks to converted documents for branding or security purposes.

OCR Support

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

Free Apps to Convert OTS to Multitude of Document Formats beside PDF

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.

Comprehensive Documentation

Access detailed documentation and support resources for easy implementation.

Compliance and Security

Ensure compliance with data security regulations and industry standards.

File Format Conversion

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

User-Friendly Interface

Intuitive interface for seamless navigation and operation.

High-Quality Output

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

Secure Conversion Process

Securely convert documents without exposing sensitive data to third parties.

Version Control

Maintain version control of documents through efficient conversion processes.

Document Metadata Preservation

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

API Integration

Easily integrate conversion capabilities into your applications using APIs.

Scalable Performance

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

Free Apps to Get Started and convert OTS to PDF 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.

Document Preview

Preview documents before conversion to ensure desired output.

Scheduled Conversions

Schedule conversions at a convenient time to optimize resource utilization.

Customizable Output Formats

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

Support and Learning Resources

Convert OTS to PDF using SDKs in other popular languages

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