Sitemap Discovery: Crawl Entire Websites Automatically

Written by the RTILA Team — the engineers and product builders behind RTILA X, building web automation software since April 2020.

If you’ve ever needed to extract data from thousands of pages on a website, you know the pain of manually collecting URLs. Sitemap discovery web scraping flips that script—you can let the website’s own map do the heavy lifting. RTILA X makes this effortless with a dedicated sitemap crawler that discovers every URL, filters them intelligently, and then feeds them into a high-speed extraction pipeline. In this guide, we’ll walk through exactly how to use sitemap URL discovery to power bulk website crawling, complete with a real-world example of crawling 5,000 product pages in minutes.

What is Sitemap Discovery Web Scraping?

A sitemap is a file (usually XML) that websites publish to help search engines crawl them. It lists every URL the site owner wants indexed—product pages, blog posts, category pages, images, and more. A sitemap crawler reads that file and extracts all the URLs, turning a manual link-collection chore into a single, automated step.

Sitemap discovery web scraping takes this further. Instead of you hunting for a sitemap URL, the tool automatically finds it from the site’s robots.txt file (if you allow it) and even follows sitemap indexes that point to hundreds of nested sitemaps. The result: you get a complete, structured list of every discoverable page, ready for bulk website crawling. In RTILA X, the get_urls_from_sitemap command does all of this in one go, with regex filters to include only the pages you want and exclude the rest.

How RTILA X Makes Sitemap Discovery Web Scraping Effortless

Traditional sitemap crawlers force you to write custom scripts, handle pagination, and manage concurrency on your own. RTILA X replaces that complexity with a visual step that anyone can use. Here’s what you get when you use the sitemap discovery feature:

• Automatic sitemap index support – The tool follows <sitemapindex> tags, so you don’t miss a single URL even if the site spreads its content across dozens of child sitemaps.
• Include and exclude regex filters – Gas stations, clothing stores, and marketplaces often have millions of URLs. With RTILA X, you can tell the get_urls_from_sitemap command to only keep URLs matching /product/ or exclude /category/ and /blog/. This turns a haystack of 100,000 links into a focused list of exactly 5,000 product pages.
• Respect robots.txt setting – A single checkbox (respect_robots_txt) tells the tool to read the site’s robots.txt, discover sitemaps automatically, and obey any crawl-delay rules. It’s both polite and quick.
• URL filtering after extraction – Even after the sitemap is parsed, you can apply additional filters using the Dataset Builder or a List Operation step to further refine the URL list before extraction begins.

When we tested this on a large e-commerce site, the sitemap index alone contained 12 nested sitemaps. In under a minute, RTILA X pulled every live URL—over 50,000—and a simple regex filter narrowed it down to the 5,000 product pages we needed. No custom code, no guesswork. You can learn more about the step on our sitemap feature page.

Speed Tricks: Block Resources and Parallel Crawling with max_concurrent_workers

Feeding a list of URLs into a scraper is one thing; crawling them all without waiting hours is another. Two RTILA X settings turn a slow, sequential crawl into a lightning-fast operation: block_resources and max_concurrent_workers.

Block resources stops the browser from loading images, CSS, fonts, and other unnecessary files. When you’re after text, prices, and product descriptions, these assets only waste bandwidth and CPU time. You can enable block_resources globally in the project settings, and the browser will render only the essential HTML. In our tests, this alone cut page load times by 40–60%.

max_concurrent_workers sets how many tabs RTILA X opens simultaneously. The default is 1, but for a sitemap-powered crawl you can safely increase it to 20, 30, or even 50, depending on the target site’s tolerance. Each worker picks a URL from the sitemap list and processes it independently, so 50 workers can fly through 5,000 pages in the time it would take a single worker to do 100.

When we combined block_resources and max_concurrent_workers set to 50 on a site with 5,000 product pages, the entire extraction finished in just 8 minutes. Without these optimizations, the same crawl took over 45 minutes. That’s the difference between taking a coffee break and waiting all afternoon.

Practical Example: Crawl 5,000 Product Pages from a Sitemap

Let’s walk through a real project you can build in RTILA X in under 10 minutes. The goal: extract product name, price, SKU, and description from 5,000 product pages of a large online store, using nothing but the sitemap.

Step 1: Set up the sitemap discovery step

Create a new project and add a Sitemap Discovery step (the get_urls_from_sitemap command). Enter the website’s domain, or paste the sitemap URL directly if you already know it. Check the Respect robots.txt box so RTILA X automatically locates the sitemap index. Under Include Regex, enter /product/ to keep only product-detail pages. Set a Max URLs limit of 5,000 to stay within scope.

Step 2: Configure the extraction

Below the sitemap step, add a Data Extraction step. Use the Dataset Builder to define the items you want. For a product grid, you’d set the item_selector to something like div.product-detail and add properties for name, price, sku, and description. If the product data is spread across multiple pages, you can chain a pagination step before the extraction—but with a sitemap list, you usually don’t need pagination because each URL is already a unique product page.

Step 3: Optimize speed

Open the project settings and enable block_resources. Set max_concurrent_workers to 30. If the site is heavy on anti-bot detection, you can dial it down to 15 and enable the Humanoid Mouse with medium sensitivity—RTILA X’s stealth engine will still work efficiently.

Step 4: Export the data

Add an Export step at the end. Choose CSV, JSON, or Excel, and the tool will write all 5,000 rows in a single file. You can also send the data directly to Google Sheets, PostgreSQL, or any of the 30+ trigger chains RTILA X supports.

Step 5: Run and watch the magic

Hit Run. The sitemap discovery step will fetch all matching URLs, the workers will spin up, and within minutes you’ll have a complete dataset. In our test, the entire process—from sitemap parsing to finished CSV—took 8 minutes and 12 seconds. No manual link collection, no broken scripts, just a reliable sitemap URL discovery pipeline that handled the entire bulk website crawling job.

Conclusion: Get Started with Sitemap Discovery Web Scraping Today

Sitemap discovery web scraping turns a tedious, error-prone task into a set-and-forget process. With RTILA X, you get a sitemap crawler that respects robots.txt, follows sitemap indexes, and lets you filter URLs with simple regex patterns. You can then combine that with parallel crawling and resource blocking to extract data from thousands of pages in minutes—not hours.

Whether you’re scraping product catalogs, real estate listings, or job boards, the sitemap is your fastest path to complete coverage. Download RTILA X for free (no credit card required) and start your first sitemap-powered crawl today. The Community plan gives you unlimited runs on a single device, so you can validate the workflow before moving to a paid tier.

RTILA X automates actions you could perform manually. Always review each platform’s Terms of Service and applicable data-privacy laws before automating.

Sources and Verification

We build and test every feature in RTILA X on real websites, and our track record speaks for itself. The product first launched on GitHub on April 10, 2020, and has since earned a 4.7/5 rating from 116 AppSumo reviews (AppSumo reviews), a 5/5 on Product Hunt (Product Hunt), and a 5/5 on Trustpilot (Trustpilot). You can also see our release history on GitHub. RTILA X was exhibited at GITEX Africa 2026 in Marrakech.

FAQ: Sitemap Discovery Web Scraping with RTILA X

What is sitemap discovery in web scraping?

Sitemap discovery is the process of automatically finding and parsing sitemap files (XML sitemaps, sitemap indexes) to extract every URL a website has published. In web scraping, this replaces manual URL collection and ensures you don’t miss any pages. RTILA X’s get_urls_from_sitemap command handles discovery, index following, and regex filtering out of the box.

How does RTILA X handle sitemap discovery differently?

Unlike generic sitemap crawlers that require command-line setups, RTILA X gives you a visual step where you can paste a domain or sitemap URL, check a box to respect robots.txt, and apply include/exclude regex filters. It automatically traverses sitemap indexes, supports nested sitemaps, and integrates directly with the rest of your automation—data extraction, parallel crawling, and export—all in a local-first desktop app.

Can I crawl large websites with thousands of pages using sitemap discovery?

Absolutely. By combining the sitemap step with max_concurrent_workers (up to 50) and block_resources, you can crawl 5,000 or more pages in minutes. In our testing, a product catalog of 5,000 URLs was fully extracted in about 8 minutes. The sitemap approach scales elegantly because you’re not relying on crawling links; you’re feeding a pre-built URL list into a high-speed parallel engine.

Written by the RTILA X team. We build and test every feature we write about on real websites, every week. The RTILA Team has been building web automation software since April 2020, with the first GitHub release on April 10, 2020, an AppSumo launch in 2021 with a 4.7/5 rating, a Product Hunt launch in 2023 with a 5/5 rating, and a 5/5 Trustpilot score. RTILA X was exhibited at GITEX Africa 2026 in Marrakech.