> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/core/forms.md). # Forms - [PDF form filling library for Server/Desktop](https://docs.apryse.com/core/forms/forms.md): Learn how to import, export, create, and fill form data in PDFs. Discover how to merge XFDF into FDF, extract data, create new form fields, and flatten forms for efficient document management. The Apr - [Merge Form Data File (FDF or XFDF) to PDF Forms on Server/Desktop](https://docs.apryse.com/core/forms/import-data.md): Learn how to efficiently import XFDF or FDF annotations into PDF documents using FDFUpdate, FDFMerge, and MergeXFDF APIs. Choose the best method for your use case and optimize your PDF workflow. The A - [Extract FDF data from a PDF on Server/Desktop](https://docs.apryse.com/core/forms/export-data.md): Learn how to extract data from PDF to FDF and export FDF as XFDF with full sample code for PDF form fill and data extraction. Get complete support for FDF merge/extract functionality here! The Apryse - [Create new form fields and widget annotations on Server/Desktop](https://docs.apryse.com/core/forms/new-fields.md): Learn how to create new form fields and widget annotations within a PDF document. Explore PDF interactive forms (AcroForms) and discover various field types like text-box, checkbox, radio-button, and - [Filling PDF form fields on Server/Desktop](https://docs.apryse.com/core/forms/fill-fields.md): We show how to fill PDF form fields on Server/Desktop. Guide includes sample code. - [Flatten PDF form content on Server/Desktop](https://docs.apryse.com/core/forms/flatten.md): Flatten form fields in a PDF document with PDF interactive forms (AcroForms). Learn how to use Field.Flatten() method and more with this comprehensive guide. Unlock PDFNet capabilities now! The Apryse - [Code samples to fill PDF forms & extract data on Server/Desktop](https://docs.apryse.com/core/forms/samples.md): Discover how to work with PDF interactive forms (AcroForms) using this sample that showcases PDFNet capabilities for form fill, data extraction, and FDF merge/extract functions. The Apryse Server SDK - [APIs for PDF form filling on Server/Desktop](https://docs.apryse.com/core/forms/apis.md): Discover utility classes for forms on PDF documents in C++, Java, Android, Web, Node.js, .NET, iOS, Xamarin, and UWP with PDFNet.FDFDoc and PDFNet.FDFField. Optimize your PDF forms now! The Apryse Ser --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` GET https://docs.apryse.com/core/forms.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.