How to Handle Website Challenges Automatically
Many websites present challenge pages to verify that visitors are real users before delivering content. Standard HTTP scrapers receive the challenge page instead of the data — requiring a full browser environment with challenge resolution capability to proceed.
Step-by-Step Guide
Identify the challenge type
Common challenges include JavaScript verification pages and browser integrity checks. If your scraper returns a page asking to 'verify you are human', a compatibility-capable browser environment is needed.
Use AlterLab's automatic compatibility tier
Send your request to AlterLab with the appropriate tier parameter. The API automatically selects a browser environment capable of resolving the challenge on the target site.
Verify the response contains your data
Check the returned HTML for your target content. If the challenge was resolved, you will receive the actual page content rather than the challenge page.
Code Example
import requests
response = requests.post(
"https://alterlab.io/api/v1/scrape",
headers={"X-API-Key": "YOUR_API_KEY", "Content-Type": "application/json"},
json={
"url": "https://example.com/protected-page",
"render_js": True,
# AlterLab auto-escalates to the appropriate compatibility tier
},
)
data = response.json()
print(f"Status: {data['status_code']}")
print(f"HTML length: {len(data.get('html', ''))}")Replace YOUR_API_KEY with your key from the dashboard. No credit card required.
Ready to try it?
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Frequently Asked Questions
Related Guides
Responsible Use
AlterLab is designed for extracting publicly available data. Always review the terms of service for any website you access, respect robots.txt directives, and ensure your use case complies with applicable laws in your jurisdiction.
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