The industry leading website crawler for technical SEO audits.
Grade: B — Score: 70/100
The Screaming Frog SEO Spider is a versatile website crawler available for Windows, macOS, and Linux, trusted by thousands of SEO professionals and agencies globally. It helps users identify over 300 SEO issues, warnings, and opportunities to enhance website health and user experience.
With features such as broken link detection, redirect auditing, and metadata analysis, the tool streamlines the SEO workflow. Users can crawl up to 500 URLs for free or purchase a license for unlimited access and advanced functionalities, making it suitable for both small websites and large enterprises.
However, users must be aware of potential risks, such as the need for technical knowledge to interpret the data effectively. Additionally, while the tool is feature-rich, it may require time to fully explore and utilize all available options.
Free Version: Free
Paid Licence (1-4 licences): £199/licence/year ($279 USD / €245 EUR)
Paid Licence (5-9 licences): £189/licence/year
Paid Licence (10-19 licences): £179/licence/year
Paid Licence (20+ licences): £169/licence/year
Consider switching to Ahrefs: Ahrefs offers a broader suite of SEO tools including backlink analysis and keyword research.
Screaming Frog is a desktop-based technical crawler that gives you granular control over crawl parameters, custom extraction via XPath/CSS/regex, and JavaScript rendering. Ahrefs is a cloud-based SEO suite that combines site auditing with keyword research, backlink analysis, and competitive intelligence starting at $99/mo. Many SEO teams use both: Screaming Frog for deep technical diagnostics, Ahrefs for ongoing keyword and backlink strategy. Screaming Frog costs $279/year versus Ahrefs' $1,188+/year minimum.
Both are desktop crawlers for technical SEO, but they take different approaches. Screaming Frog presents raw data tables and gives full control over crawl settings and custom extraction. Sitebulb automatically categorizes findings into 300+ prioritized hints with plain-language explanations and visual reports. Sitebulb also offers a cloud version from £95/mo for team collaboration. Screaming Frog's paid licence is £199/year ($279 USD). Sitebulb Desktop starts at $13.50/mo (Lite) or $35/mo (Pro). Screaming Frog is the better fit for experienced SEOs who want raw data flexibility. Sitebulb is stronger for agencies that need client-ready PDF reports without manual analysis.
Yes. The paid version includes an integrated Chromium rendering engine that executes JavaScript the same way Google does. This means it can crawl dynamic sites built with React, Angular, Vue.js, and other JavaScript frameworks. The free version does not include JavaScript rendering. You enable it under Configuration > Spider > Rendering by selecting JavaScript as the rendering mode.
Screaming Frog runs on Windows, macOS, and Linux. For sites under 100,000 URLs, 8 GB of RAM is typically sufficient. Crawling 500,000+ URLs may require 16 GB or more. The tool uses a hybrid storage engine that saves data to disk, but RAM still determines crawl speed. Users on Reddit and Capterra report that crawling very large sites (250,000+ pages) can slow down standard laptops significantly. For enterprise-scale crawls, dedicated hardware or a machine with 32 GB+ RAM is recommended.
Yes. Screaming Frog runs natively on Windows, macOS, and Linux. The macOS version has been available since 2011. All three platforms share the same feature set and receive the same updates. The installer is a direct download from the Screaming Frog website with no account signup required for the free version.
The free version crawls up to 500 URLs per session and includes basic features: broken link checking, meta tag analysis, robots directive review, hreflang auditing, duplicate detection, and XML sitemap generation. The paid licence at £199/year ($279 USD) removes the crawl limit and unlocks JavaScript rendering, crawl comparison, scheduled crawls, custom extraction (XPath/CSS/regex), API integrations (Google Analytics, Search Console, PageSpeed Insights), link metrics integration (Majestic, Moz, Ahrefs), forms-based authentication, segmentation, and technical support.
Yes, and reviewers on Capterra and G2 frequently cite site migration support as a top use case. The crawl comparison feature lets you diff staging against production using URL mapping. You can upload a list of old URLs, crawl the new site, and verify that every redirect resolves correctly. This catches broken redirects, missing pages, and structural changes before they go live. The scheduling feature also lets you monitor the new site post-migration for issues that appear over time.
No. Screaming Frog is a technical website crawler only. It does not include keyword research, rank tracking, backlink analysis, or competitive intelligence features. For those workflows, you need a separate tool like Ahrefs ($99+/mo), Semrush ($139.95+/mo), or Moz Pro ($49+/mo). Screaming Frog does integrate with Majestic, Moz, and Ahrefs APIs to pull link metrics into crawl results, but this requires your own active subscription to those services.