Web Scraping
Playwright Stealth: Bypassing Cloudflare & DataDome Anti-Bot Defenses (2026)
Learn headless Chrome fingerprint spoofing, TLS JA3/JA4 fingerprinting, WebGL/Canvas spoofing, and Cloudflare challenge evasion.
How Anti-Bot Shields Detect Automated Browsers
Modern shields like Cloudflare and DataDome inspect the `navigator.webdriver` flag, WebGL hardware vendor strings, installed fonts, TLS Client Hello signatures (JA3/JA4), and human mouse movement trajectories.
import asyncio
from playwright.async_api import async_playwright
from playwright_stealth import stealth_async
async def run():
async with async_playwright() as p:
browser = await p.chromium.launch(headless=True)
context = await browser.new_context(
user_agent="Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36",
locale="en-US",
viewport={"width": 1920, "height": 1080}
)
page = await context.new_page()
await stealth_async(page)
await page.goto("https://bot.sannysoft.com")
print("Stealth evasion activated!")
await browser.close()
asyncio.run(run())Related Technical Guides
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Smart Web Scraping with Playwright and AI: Accessibility Trees (AOM) & Vision
How AI vision models and browser automation tools transform fragile CSS selectors into self-healing, intelligent scraping pipelines resilient against anti-bot shields.
Crawl4AI Guide: Clean Markdown & Structured JSON Extraction for LLMs & RAG
Learn the open-source Crawl4AI library to strip HTML noise and extract LLM-friendly clean Markdown and structured JSON for RAG pipelines.
Browserbase & Cloud Browser Infrastructure: Scalable Headless Fleet Management
Solve memory leaks, IP bans, and server scaling bottlenecks by delegating headless Chrome execution to managed cloud browser grids via CDP.