---
title: PDFFormFiller
product: PDF Generator
api-type: class
description: A plugin that enables you to fill interactive fields in existing PDF forms.
source: https://surveyjs.io/pdf-generator/documentation/api-reference/pdfformfiller
---

# `PDFFormFiller`

A plugin that enables you to fill interactive fields in existing PDF forms.

This plugin requires a third-party library, such as [`pdf-lib`](https://pdf-lib.js.org/) or [PDF.js](https://mozilla.github.io/pdf.js/):

[View pdf-lib Demo](https://surveyjs.io/pdf-generator/examples/map-survey-responses-to-pdf-fields-using-pdflib/ (linkStyle))

[View PDF.js Demo](https://surveyjs.io/pdf-generator/examples/fill-in-pdf-form-fields-with-dynamic-survey-data-using-pdfjs/ (linkStyle))

## Inheritance

[`PDFFormFillerBase`](https://surveyjs.io/pdf-generator/documentation/api-reference/pdfformfillerbase.md) → `PDFFormFiller`