---
title: "Fill PDF form (file upload)"
method: POST
path: "/api/pdf-forms/fill/upload"
tags: ["PDF Forms"]
---

# Fill PDF form (file upload)

`POST /api/pdf-forms/fill/upload`

## Request

- Base URL: `https://api.dokmatiq.com`
- URL: `https://api.dokmatiq.com/api/pdf-forms/fill/upload`
- Auth: API key in header `X-API-Key`

Upload a PDF form file and fill it with the provided field values. Alternative to the Base64-based endpoint for direct file upload.

## Query parameters

- `flatten` boolean
- `password` string

## Response `200`

Filled PDF document

## Other responses

- `400`: Invalid request or PDF has no form fields

---

[API](https://skmtc.dev/dokmatiq/apis/docgen-api.md) · [All operations](https://skmtc.dev/dokmatiq/apis/docgen-api/llms.txt) · [OpenAPI document](https://skmtc.dev/dokmatiq/apis/docgen-api/revisions/3fa1a922764d?raw)