AI PDF Form Filler — Fill PDF Forms Instantly with Natural Language

AI handles variations like "company", "business", "org name", "organization" and maps them to the same field.

Onboarding a new hire means a stack of forms: the I-9, a federal W-4, a W-9 for contractors, state withholding certificates, direct deposit authorizations, and benefits enrollment paperwork. Miss the I-9's three-business-day completion deadline and you risk compliance penalties — DocuQueue's bulk pipeline keeps every packet on schedule.

Upload each form type once as a template, then prepare a CSV or Excel file with one row per new hire. DocuQueue processes up to 50 forms per request — one filled PDF per new hire per form type — and scales to 10,000 PDFs per hour for enterprise onboarding waves. Download the completed documents as a ZIP, ready to file for E-Verify, hand to payroll, or send for e-signature. Every field is mapped by AI from your column headers, so no manual field mapping is required.

See the HR document automation use case →

View the PDF Filling API for developers →

Learn about document workflow automation →

Form filler SDK: cURL, JavaScript, and Python

Every form-filling action in the web app is available over REST. Upload a PDF once to create a template, then fill it with JSON data. Here are working samples in three languages.

cURL

# 1) Upload the PDF — AI detects every field (1 credit)
curl -X POST https://api.docuqueue.com/api/v1/forms/upload \
  -H "api-key: YOUR_API_KEY" \
  -F "file=@w9-form.pdf"

# 2) Fill it with JSON data
curl -X POST https://api.docuqueue.com/api/v1/forms/FORM_ID/fill \
  -H "api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"data": {"name": "Jane Smith", "tax_id": "12-3456789"}}' \
  -o filled-w9.pdf

JavaScript (fetch)

// Upload the PDF template
const form = new FormData();
form.append("file", fileInput.files[0]);
const upload = await fetch("https://api.docuqueue.com/api/v1/forms/upload", {
  method: "POST",
  headers: { "api-key": "YOUR_API_KEY" },
  body: form
});
const { id: formId } = await upload.json();

// Fill from structured data
const filled = await fetch(`https://api.docuqueue.com/api/v1/forms/${formId}/fill`, {
  method: "POST",
  headers: { "api-key": "YOUR_API_KEY", "Content-Type": "application/json" },
  body: JSON.stringify({ data: { name: "Jane Smith", tax_id: "12-3456789" } })
});
const blob = await filled.blob();

Python (requests)

import requests

# Upload the PDF template (1 credit)
with open("w9-form.pdf", "rb") as f:
    upload = requests.post(
        "https://api.docuqueue.com/api/v1/forms/upload",
        headers={"api-key": "YOUR_API_KEY"},
        files={"file": f},
    )
form_id = upload.json()["id"]

# Fill it and save the completed PDF
filled = requests.post(
    f"https://api.docuqueue.com/api/v1/forms/{form_id}/fill",
    headers={"api-key": "YOUR_API_KEY", "Content-Type": "application/json"},
    json={"data": {"name": "Jane Smith", "tax_id": "12-3456789"}},
)
with open("filled-w9.pdf", "wb") as out:
    out.write(filled.content)

Prefer an AI agent to do the filling? Connect the DocuQueue MCP server to Claude or ChatGPT and fill forms from chat.

Supported field types

Over 48 field types are supported across government, business, and legal PDFs. Batch fill up to 50 forms per request via /api/v1/forms/FORM_ID/fill-batch.