High-Volume XSL-FO to PDF Conversion

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Advanced Document Production at Scale

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Convert XSLFO to PDF, Word and 20+ output formats using Ecrion, the world’s fastest XSL-FO formatting engine. Using a simple, REST-based API interface, our XML rendering software can help you deliver stunning reports, invoices, statements, letters, and more, right from your application. System integrators and software developers all over the world rely on Ecrion to produce and distribute millions of documents per day from any data.


XSL-FO contains both data and layout, however to understand how XSLFO is converted to PDF, let’s take a look at the entire process of going from data to output.

Since XML contains primarily only data, a layout will have to be designed. This layout (also known as a template) uses the XSL-FO language to describe how data will be presented into a human readable format

Templates may also contain rules and conditions for generating output, as well as other elements such as fields and tables.

Once you have designed your template, you can then use the Ecrion API to generate PDF, Word or even interactive HTML5 documents.

Ecrion provides a truly enterprise solution, suitable for the most complex business use-cases, while providing the most easy to use design environment available today. Click Play for a quick introduction.

  • Step 1: Design a XSL-FO template using Ecrion Studio. Our WYSIWYG XSL-FO designer can help software developers and business users alike can get proficient quickly in the Office-style interface. Build dynamic invoices, statements, correspondence, and reports. Use simple drag & drop operations to build your template.
  • Step 2: Use the Ecrion API to convert XML. The template you have designed in the first step can be used to generate not only PDF, but also Word, Interactive HTML5 and more. The API can process your XML documents in real-time. Batch processing is also supported, with the ability to produce millions of documents in a single run.

Compliance and Scalability

Organizations worldwide leverage XSL-FO rendering software by Ecrion to enhance their customer experience, reduce operating costs, and take control of their document generation. The Ecrion solution is compliant with XSL-FO Specification 1.1 and can produce PDF documents compliant with several standards including PDF/A, PDF/UA and more, Thousands of companies across a broad range of industries ensure compliance with corporate branding and legal standards while establishing genuine connections with their customers—one at a time.

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Code Samples

Convert XML to PDF Sample Thumbnail

Convert XML to PDF

The code sample uses the API to convert XML to PDF using a template stored on the server. An XML string is sent to the Ecrion server and a PDF is received back.

Convert JSON to PDF Sample Thumbnail

Convert JSON to PDF

The code sample uses the API to convert JSON to PDF using a template stored on the server. A JSON is sent to the Ecrion server and a PDF is received back.

Merge Multiple Documents Sample Thumbnail

Merge Multiple Documents

The code sample uses the API to merge a document package stored on the server to a single PDF.

Convert XSL-FO to PDF Sample Thumbnail

Convert XSL-FO to PDF

The code sample uses the API to convert XSL-FO to PDF. An XSL-FO string is sent to the Ecrion server and a PDF is received back.

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