---
title: "Fill PDF forms using Instant JSON in Node.js"
canonical_url: "https://www.nutrient.io/guides/nodejs/json/filling-a-form-with-instant-json/"
md_url: "https://www.nutrient.io/guides/nodejs/json/filling-a-form-with-instant-json.md"
last_updated: "2026-05-21T17:12:02.267Z"
description: "Learn to fill PDF forms with Instant JSON files easily. Follow our step-by-step guide for efficient management of form fields."
---

# Effortlessly fill PDF forms with Instant JSON

Follow the steps in this guide to fill a PDF form using an Instant JSON file with Nutrient Node.js SDK.

1. Create a new Instant JSON file. You can see an [example of an Instant JSON file here](https://www.nutrient.io/guides/nodejs/json/example-json-file.md).

2. Add the values for the various form fields to a top-level `formFieldValues` field in the Instant JSON file, like so:

```json

{
    "annotations": [...],
    "formFields": [...],
    "format": "https://pspdfkit.com/instant-json/v1",
    "formFieldValues": [
        {
            "name": "Client Address",
            "type": "pspdfkit/form-field-value",
            "v": 1,
            "value": "An address"
        },
        {
            "name": "Client ZIP",
            "type": "pspdfkit/form-field-value",
            "v": 1,
            "value": "333333"
        },
        {
            "name": "Check Box 11",
            "type": "pspdfkit/form-field-value",
            "v": 1,
            "value": ["Yes"]
        },
        {
            "name": "Check Box 17",
            "type": "pspdfkit/form-field-value",
            "v": 1,
            "value": ["Yes"]
        },...
    ]
}

```

3. Follow the instructions in the [import Instant JSON](https://www.nutrient.io/guides/nodejs/annotations/import-annotations.md) guide to import the Instant JSON file containing the new `formFieldValues` to the PDF document.
---

## Related pages

- [Download our Instant JSON file example](/guides/nodejs/json/example-json-file.md)
- [Instant JSON in Node.js workflows](/guides/nodejs/json.md)
- [How Instant JSON works](/guides/nodejs/json/how-it-works.md)