What Is Web Scraping?
Web scraping is the automated extraction of publicly available data from websites using software. A scraper requests web pages, parses the HTML, and saves structured data such as prices, listings or reviews. At scale, scraping relies on proxies to distribute requests and avoid being blocked.
How web scraping works
- 1The scraper sends an HTTP request to a target URL.
- 2The server returns the page's HTML.
- 3The scraper parses the HTML and extracts the data fields it needs.
- 4The data is cleaned and stored (CSV, database, API).
- 5The process repeats across many pages, often in parallel.
What web scraping is used for
- Price monitoring and competitor research
- SEO and SERP tracking
- Lead generation and market research
- Real estate, travel and job aggregation
- Training and evaluating AI / machine-learning models
Why proxies are essential
Websites block scrapers that send many requests from one IP or from known datacenter ranges. Proxies — especially rotating residential proxies — spread requests across many real IPs so traffic looks like separate visitors, keeping success rates high and avoiding bans and CAPTCHAs.
Scrape responsibly: respect robots.txt, pace your requests, and only collect public data in line with the site's terms and local law.
Frequently asked questions
Is web scraping legal?
Scraping publicly available data is broadly permitted in many jurisdictions, but legality depends on the data, the site's terms and local law. Proxies are a neutral tool; you are responsible for scraping lawfully.
What proxies are best for web scraping?
Rotating residential proxies are best for protected sites; datacenter proxies are best for high-volume scraping of sites that don't block aggressively.
Do I need to code to scrape the web?
Building custom scrapers usually involves code (Python, Node.js), but no-code scraping tools also exist. Either way, proxies integrate via standard authentication.
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GuidesHow to Avoid Getting Blocked When Web Scraping
A practical checklist to keep scraping success rates high and avoid bans, CAPTCHAs and rate limits.
GuidesAre Proxies Legal? What You Need to Know
Proxies are legal networking tools. Here's what's allowed, what depends on how you use them, and how to stay compliant.