URL to HTML API Documentation - Convert Web Pages to Static HTML Files
URL to HTML API
Category: Web Tools & Static HTML Generation Endpoint: POST https://api.gugudata.io/v1/websitetools/url2html?appkey={{appkey}} Description: Efficiently convert any webpage URL to a static HTML file with permanent CDN storage
Overview
The URL to HTML API from GuGuData provides powerful webpage conversion capabilities that enable you to transform any URL into a static HTML file. This robust API offers high-fidelity conversion with resource compression and permanent CDN storage. Perfect for web archiving, content backup, static site generation, and offline access.
Key highlights:
High-fidelity conversion – Ultra-high accuracy in webpage conversion
Resource compression – Compress all site resources into a single file
Permanent storage – CDN-based permanent storage for generated HTML
Direct access – Generate directly accessible HTML site files
Real-time processing – Convert webpages on-demand with fast response times
Secure delivery – HTTPS support with TLS v1.0-1.3 compatibility
Image Showcase

Above: Example of a webpage converted to a static HTML file with all resources compressed
Demo URL
https://api.gugudata.io/v1/websitetools/url2html/demo
Request Parameters
Send a POST request to the endpoint with the following parameters:
| Parameter | Type | Required | Default Value | Description |
url | string | Yes | YOUR_VALUE | URL of the webpage to convert. Note that SPA (Single Page Application) sites may have issues with content retrieval |
Example Request:
POST /v1/websitetools/url2html?appkey=YOUR_APPKEY
Content-Type: application/json
{
"url": "https://www.example.com"
}
Response Format
The API returns a JSON response with the following structure:
{
"DataStatus": {
"StatusCode": 200,
"StatusDescription": "Success",
"ResponseDateTime": "2024-05-22T16:27:25.509Z",
"DataTotalCount": 1
},
"Data": "https://cdn.gugudata.io/html/example.html"
}
Error Codes
| Error Code | Description | Notes |
200 | Success | Normal response |
400 | Parameter error | Invalid parameters |
429 | Request rate limited | Max 100 requests per second |
403 | Account in arrears | Subscription expired |
402 | Invalid APPKEY | Check APPKEY from developer center |
500 | API response error | Internal error |
Features
Non-SPA Support – Convert traditional website content effectively
High-Fidelity Conversion – Ultra-high accuracy in webpage conversion
Resource Compression – Compress all site resources into a single file
Permanent Storage – CDN-based permanent storage for generated HTML
Direct Access – Generate directly accessible HTML site files
HTTPS Support – Secure API calls (TLS v1.0-1.3)
Apple ATS Compatibility – Fully compatible with Apple's App Transport Security
CDN Deployment – Nationwide multi-node content delivery
Load Balancing – Multiple server support for rapid response
Use Cases
Web Archiving – Create static archives of web content
Content Backup – Generate backups of important web pages
Static Site Generation – Convert dynamic sites to static HTML
Offline Access – Create offline versions of web content
Content Migration – Transfer content between platforms
Documentation – Archive technical documentation
Legal Compliance – Store web content for legal purposes
Research – Preserve web content for research
Portfolio – Create static versions of portfolio sites
Educational Resources – Archive educational content
Integration Examples
cURL
curl -X POST "https://api.gugudata.io/v1/websitetools/url2html?appkey=YOUR_APPKEY" \
-H "Content-Type: application/json" \
-d '{"url": "https://www.example.com"}'
JavaScript (Node.js)
const response = await fetch("https://api.gugudata.io/v1/websitetools/url2html?appkey=YOUR_APPKEY", {
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify({
url: "https://www.example.com",
}),
});
const result = await response.json();
Python
import requests
response = requests.post(
'https://api.gugudata.io/v1/websitetools/url2html',
params={'appkey': 'YOUR_APPKEY'},
json={
'url': 'https://www.example.com'
}
)
result = response.json()
Getting Started
Register at GuGuData.io – Get your API access key
Choose Your Plan – Select the subscription that best fits your needs (starting at ¥49)
Make API Calls – Start converting URLs to HTML
Integrate – Add HTML conversion to your applications
Best Practices
Rate Limiting – Stay within the 100 requests per second limit
URL Validation – Ensure target URLs are accessible
Error Handling – Implement proper error handling for all status codes
Security – Keep your APPKEY secure and never expose it in client-side code
Testing – Test with different types of web pages
Performance – Consider caching frequently accessed HTML files
Technical Specifications
Supported Protocols: HTTPS
Maximum URL Length: 2048 characters
Processing Timeout: 30 seconds
Concurrent Requests: Up to 100 per second
Geographic Coverage: Global CDN deployment
About GuGuData
GuGuData is a leading provider of data-centric APIs, offering solutions for Website Tools, QR Code Generation, Image Recognition, and more. Our services emphasize reliability, ease of use, and performance—helping developers build better applications faster.
Why Choose GuGuData:
Proven Track Record – Nine years of reliable service
Extensive API Portfolio – Over 4,200 APIs available
High Customer Satisfaction – 95% customer satisfaction rate
Global Infrastructure – Worldwide CDN deployment
24/7 Support – Dedicated technical assistance
Competitive Pricing – Starting at ¥49 with ¥19 discount available
Transform your web content with the URL to HTML API. Visit our official website to explore more data-driven solutions from GuGuData.