Ultimate speed. Maximum flexibility.
The #1 website crawler.
- The fastest crawler on the market — crawl speeds up to 450 URLs/second (non-rendered) & 350 URLs/second (rendered)
- Consistently upgraded and enhanced with new releases
- Close alignment with the latest Google crawling behaviors
Crawler quality matters.
Crawling software is a foundational aspect of SEO, accessibility and website intelligence platforms — like Lumar. Website crawlers traverse a website’s pages to collate the raw data required for sophisticated website analytics and serve as the first step in understanding and optimizing a website’s technical health and organic search performance, and achieving compliance to Web Content Accessibility Guidelines (WCAG).
Our crawler is the cornerstone of Lumar’s website intelligence platform — and it’s consistently upgraded and enhanced with new releases to ensure fast, accurate, scalable crawls, and alignment with the latest search engine developments.

Ultra-Fast Website Crawling
Built for speed. Lumar’s site crawler leverages best-in-class serverless architecture design to drastically enhance website crawling speeds (as fast as your infrastructure allows).
For enterprise websites housing hundreds of thousands (or millions) of pages, Lumar’s ultra-fast crawling provides a major, time-saving boon for SEO, accessibility, digital marketing and developer teams, who previously could have waited days for a full website crawl to complete. Our latest crawler release allows for crawl speeds of up to 450 pages per second (and 350 pages per second for rendered content)—that’s very fast!
Flexible & customizable website crawls
Get the exact data you need. Our crawler offers extensive flexibility in data collection. The information that can be captured in Lumar crawls expands beyond technical SEO and accessibility metrics, paving the way for new built-in metrics and reporting options within the Lumar platform.
Users have access to 350+ built-in reports in Lumar Analyze , 300+ automated tests in Protect, and the ability to design countless custom extractions to collect data on just about any aspect of your website you can imagine. This flexibility allows for new use cases to be developed via Lumar’s crawler, with our recently released GraphQL API providing easy implementation for developers.

Get your first crawl underway in just four easy steps!
What makes Lumar’s crawler the best on the market?
Constantly improving
Lumar’s engineers and product team are always at work behind the scenes to ensure our crawler and our full platform offering are up-to-date with the latest search engine developments.
Improved rendering & parsing
Accurately identify rendering issues that may impact search performance. Our crawler takes full advantage of Google’s industry-leading rendering and parsing engine to ensure JavaScript-rendered pages are viewed in line with search engines’ own capabilities and users can accurately identify rendering issues that may impact their search performance.
Close alignment with the latest Google Search behaviors
Lumar’s crawling technology is built to align with Google’s own search engine crawling behaviors. We regularly release new versions of our crawler to Lumar users, helping to ensure website teams get an accurate, up-to-date picture of how search engines view their domains.
Lumar is the website intelligence platform of choice for leading enterprise brands
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Lumar is the intelligence & automation platform behind revenue-driving websites.