PDF Generation API

Convert HTML content to PDF documents with our reliable and easy-to-use API.

Overview

The PDF Generation API allows you to convert HTML content into high-quality PDF documents. This is useful for generating reports, invoices, certificates, and other documents that need to be distributed in PDF format.

Our API uses Playwright under the hood for accurate rendering, ensuring that your PDFs look exactly as intended with proper CSS styling, images, and layout.

Key Features

Convert any valid HTML content to PDF
Control output filename
Choose between direct download or URL access
Option to receive Base64-encoded PDF data
Secure input validation and rate limiting

API Reference

POST https://wiseapis.com/api/generate-pdf

Generate PDF

Converts HTML content to a PDF document.

Request Parameters

Parameter	Type	Required	Description
api_key	string	Yes	Your API key
api_name	string	Yes	Must be "generate-pdf"
html	string	Yes	The HTML content to convert to PDF
filename	string	No	Custom filename for the PDF (default: "document.pdf")
download	string	No	Set to "true" to download the PDF directly instead of returning a URL
include_base64	string	No	Set to "true" to include the PDF as base64-encoded data in the response

Response Format

The API returns JSON with the following structure:

{
  "success": true,
  "execution_time": 1.25,
  "file_size": 125840,
  "pdf_url": "https://wiseapis.com/pdfs/6123a8b7c9d0e/document.pdf",
  "error": null
}

If base64 encoding is requested, the response includes the PDF data:

{
  "success": true,
  "execution_time": 1.25,
  "file_size": 125840,
  "pdf_base64": "JVBERi0xLjUKJcOkw7...[truncated]",
  "error": null
}

Error Responses

Status Code	Description	Example
400	Bad Request - Missing or invalid parameters	`{"success": false, "error": "HTML content is required"}`
401	Unauthorized - Invalid API key	`{"success": false, "error": "API key is required"}`
429	Too Many Requests - Rate limit exceeded	`{"success": false, "error": "Rate limit exceeded. Try again later."}`
500	Internal Server Error	`{"success": false, "error": "PDF generation failed"}`

Code Examples

curl -X POST https://wiseapis.com/api/API.php \
  -F "api_key=your_api_key" \
  -F "api_name=generate-pdf" \
  -F "html=<html><body><h1>Hello World</h1><p>This is a test.</p></body></html>" \
  -F "filename=my-document.pdf"

<?php
$apiKey = "your_api_key";
$html = "<html><body><h1>Hello World</h1><p>This is a test.</p></body></html>";

$postData = [
    'api_key' => $apiKey,
    'api_name' => 'generate-pdf',
    'html' => $html,
    'filename' => 'my-document.pdf',
    'include_base64' => 'true'
];

$ch = curl_init('https://wiseapis.com/api/API.php');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);

$response = curl_exec($ch);
curl_close($ch);

$result = json_decode($response, true);

if ($result['success']) {
    // Base64 PDF data is in $result['pdf_base64']
    $pdfData = base64_decode($result['pdf_base64']);
    file_put_contents('downloaded-document.pdf', $pdfData);
    echo "PDF successfully generated and saved!";
} else {
    echo "Error: " . $result['error'];
}
?>

// Using fetch API
const generatePDF = async () => {
  const apiKey = 'your_api_key';
  const html = '<html><body><h1>Hello World</h1><p>This is a test.</p></body></html>';
  
  const formData = new FormData();
  formData.append('api_key', apiKey);
  formData.append('api_name', 'generate-pdf');
  formData.append('html', html);
  formData.append('filename', 'my-document.pdf');
  
  try {
    const response = await fetch('https://wiseapis.com/api/API.php', {
      method: 'POST',
      body: formData
    });
    
    const result = await response.json();
    
    if (result.success) {
      console.log('PDF generated successfully!');
      console.log('PDF URL:', result.pdf_url);
      
      // Open the PDF in a new tab
      window.open(result.pdf_url, '_blank');
    } else {
      console.error('Error:', result.error);
    }
  } catch (error) {
    console.error('Request failed:', error);
  }
};

generatePDF();

import requests

api_key = "your_api_key"
html = "<html><body><h1>Hello World</h1><p>This is a test.</p></body></html>"

payload = {
    'api_key': api_key,
    'api_name': 'generate-pdf',
    'html': html,
    'filename': 'my-document.pdf'
}

response = requests.post('https://wiseapis.com/api/API.php', data=payload)
result = response.json()

if result['success']:
    # Download the PDF
    pdf_url = result['pdf_url']
    pdf_response = requests.get(pdf_url)
    
    # Save the PDF
    with open('downloaded-document.pdf', 'wb') as f:
        f.write(pdf_response.content)
    
    print("PDF successfully generated and saved!")
else:
    print(f"Error: {result['error']}")

Limitations & Notes

Rate Limits

This API is limited to 100 requests per hour per API key. If you exceed this limit, your requests will be rejected until the limit resets.

HTML Restrictions

For security reasons, only a subset of HTML tags are allowed:

Allowed tags: html, body, div, p, h1-h6, span, strong, em, ul, ol, li, table, tr, td, th, thead, tbody, br, img
JavaScript is not allowed in the HTML content
Maximum HTML size: 5MB

PDF Storage

PDFs generated with this API are stored temporarily and will be automatically deleted after 24 hours. If you need long-term storage, download the file or use the base64 encoding option.