What Is Web Scraping?

Web scraping is when an automated bot downloads the content of a website to reuse it somewhere else, regardless of whether the owner agrees. It powers price-comparison tools, search indexes, and AI training datasets, and it is also how a competitor can copy your pages wholesale. Whether it is legal depends on the data and the country, and it often comes down to a site's terms of service, not just its code.

How does web scraping work?

Web scraping works by having a bot request your pages like a browser would, then save the content instead of displaying it. The bot reads the raw HTML and pulls out the parts it wants.

Cloudflare describes a scraper as a bot that "downloads much or all of the content on a website, regardless of the website owner's wishes". It sends a series of HTTP requests, copies each reply, and works through the site until it has everything.

From there the data can be stored, republished, fed into a model, or resold. The scrape itself is quiet. You usually only notice the result.

Scraping vs crawling: what is the difference?

Scraping and crawling both send bots across the web, but they do different jobs. A crawler discovers and indexes pages so an engine can point people to them. A scraper downloads and keeps the content itself.

	Web crawler	Web scraper
Main goal	Discover and index pages	Copy content to reuse
Typical example	Googlebot	Price trackers, AI datasets
What it wants	To point readers to your page	To take your page's content

Source: crawler and scraper definitions, Cloudflare learning center.

The line blurs with AI. A crawler like GPTBot gathers text that can end up training a model, which is closer to copying than to indexing. That overlap is why blocking AI crawlers is now a real decision, and why the same Anthropic and OpenAI bots show up in this conversation at all.

Is web scraping legal?

Web scraping sits in a legal gray area that depends on the data, the method, and the country. Scraping content that is already public is treated differently from breaking into a login.

In the United States, a federal appeals court examined automated scraping of public data. Its ruling: such scraping "likely does not violate the Computer Fraud and Abuse Act" (EFF, September 2019, on hiQ Labs v. LinkedIn).

That was not a green light. The same company was later found to have broken LinkedIn's terms of service, and the case settled.

Malaysia has no equivalent landmark ruling, so the practical picture is simpler. Scraping public pages is hard to stop through the law alone, and your terms of service and technical controls carry most of the weight. Copyright still protects your original text and images, so republishing them can be a separate wrong even when the scrape itself is not.

Is my content being copied, and can you stop it?

You can make scraping harder and easier to catch, though you cannot make a public page truly uncopyable. Anything a visitor can see, a bot can usually download.

Robots.txt lets you ask well-behaved bots to stay out, but it is advisory only. Honest crawlers respect it; a determined scraper ignores it, because the file grants no real access control.

The controls that actually bite are technical: rate limiting, bot detection, and a web application firewall that blocks abusive traffic. These also help when heavy scraping slows your site down by hammering the server with rapid requests.

The first thing we check on a site worried about who is reading it is its own robots.txt. It is often quietly blocking the search crawlers the business wants, while doing nothing about the scrapers it fears.

The file is widely misunderstood as a lock when it is really a request.

Frequently asked questions

Is web scraping the same as web crawling?

No, though they overlap. Crawling is about discovery: a bot like Googlebot finds pages and indexes them so search engines can point people to you. Scraping is about extraction: a bot downloads your actual content to reuse it. A search crawler wants to send readers to your page. A scraper wants to take what is on it.

Is it illegal for someone to scrape my website?

Usually not automatically, and it depends on the country. In the US, scraping publicly visible data has been ruled unlikely to break computer-hacking law, though it can still breach a site's terms of service. Malaysia has no landmark ruling. Copyright still protects your original text and images, so republishing them may be a separate violation even when the scrape is not.

Can robots.txt stop web scraping?

No, not on its own. Robots.txt is a polite request that well-behaved bots like Googlebot honor. A scraper built to copy your content can simply ignore it, because the file grants no access control at all. To actually block abusive bots you need technical measures like rate limiting, bot detection, or a web application firewall.

Does web scraping slow down my website?

It can. Aggressive scrapers send many rapid requests, which adds load to your server and can slow the site for real visitors or even knock it offline. Light, well-paced scraping is usually unnoticeable. Persistent heavy scraping is worth blocking, both to protect your content and to keep the site fast for the people you want.

How do I know if my content is being scraped?

Watch for the signs: unusual traffic spikes from unknown sources, your exact text appearing on other sites, or search results showing duplicate copies of your pages. Server logs and analytics reveal odd request patterns. Searching a distinctive sentence from your site in quotation marks often surfaces copies quickly.

Keeping your content yours

Storming Solutions builds and maintains websites for Malaysian businesses. Part of that work is setting sensible bot controls, so honest crawlers get in and abusive scrapers get slowed down. We would rather configure that quietly at launch than react after a competitor has copied a site.

Worried your pages are being copied, or unsure what your site currently allows? Message us on WhatsApp with the URL, see what a website audit checks, or ask us about web development.