PDF and document conversion server

Document Engine accepts multiple file formats as input, including PDF, Word, Excel, PowerPoint, and images. It can output files in PDF, PDF/A, Excel, PNG, JPEG, WebP, and TIFF formats. Converted files can be opened in our Web, iOS, Android, React Native, and Flutter client SDKs.

Guides for conversion

Office to PDF
Learn how to convert Microsoft Office files to PDF using Document Engine’s API. Includes examples for disk and URL sources with markup mode options.
To PDF/A
Follow our guide to convert documents to PDF/A format and ensure long-term preservation with expert tips and techniques.
Office to image
To convert an Office document to an image, post a multipart request to the /api/build endpoint, including both the Office file as the input.
To PDF/UA
Learn how to automatically tag PDF documents for PDF/UA-1 accessibility compliance using Nutrient Document Engine build instructions.
Image to PDF
To convert an image file to a PDF, send a request to the /api/build endpoint, including both the image file as input and the instructions JSON.
Text to PDF
Learn how to convert text files to PDF using Document Engine’s API. Includes examples for disk and URL sources with simple conversion instructions.
PDF to image
To convert a PDF file to an image, send a multipart request to the /api/build API endpoint, including both the source document.
PDF to Office
To convert a PDF document to Office format, send a multipart request to the /api/build API endpoint, including both the source document.
PDF to HTML
Learn how to convert PDF to HTML with Document Engine, including page and reflow layouts and optional processing steps.
HTML to PDF
Learn how to convert HTML to PDF with operations such as watermarking and page rotation. Explore our guide for PDF generation techniques.
CAD to PDF
To convert a CAD file to a PDF, send a request to the /api/build endpoint, including both the CAD file as input and the instructions JSON.

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