Web Crawling And Scraping Reference

---
name: web-crawling-and-scraping-reference
description: "Web crawling and scraping reference — robots.txt protocol, Scrapy framework, anti-bot detection, headless browsers, and legal considerations"
category: "Web & Scraping"
author: community
version: "3.0.0"
icon: globe
---

# Crawler

Web crawling and scraping reference — robots.txt protocol, Scrapy framework, anti-bot detection, headless browsers, and legal considerations. No API keys or credentials required — outputs reference documentation only.

## Commands

| Command | Description |
|---------|-------------|
| `intro` | Crawling vs scraping, robots.txt, sitemap |
| `standards` | HTTP caching, structured data, meta tags |
| `troubleshooting` | Anti-bot detection, JS rendering, encoding |
| `performance` | Concurrency, dedup, incremental, distributed |
| `security` | Legal landscape, ethical guidelines, proxies |
| `migration` | BeautifulSoup to Scrapy, requests to Playwright |
| `cheatsheet` | Scrapy commands, CSS/XPath, curl, user-agents |
| `faq` | Legality, JS pages, blocking, storage |

## Output Format

All commands output plain-text reference documentation via heredoc. No external API calls, no credentials needed, no network access.

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