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Screaming Frog

SEO Software

The world's leading website SEO crawler

Founded 2010Henley-on-Thames, UKfreemium · Free planFrom Free (500 URL limit); Paid licence £259/year (~$330/year) per userVerified · Sep 2026
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About Screaming Frog

Screaming Frog SEO Spider is a desktop application that crawls websites to audit technical SEO issues including broken links, duplicate content, redirect chains, and missing metadata.

Editorial Assessment

Screaming Frog SEO Spider is a website crawler used by SEO professionals to audit websites for technical issues — crawling URLs and returning a structured data export of metadata, response codes, redirects, canonical tags, hreflang, page speed signals, structured data errors, and over 100 other on-page SEO data points. Founded in 2010 by Daniel Sharp and the Screaming Frog team in Henley-on-Thames, UK, the tool grew organically through word-of-mouth in the SEO community and remains independent. The SEO Spider is a desktop application (Windows, Mac, Linux) that downloads and indexes site structure locally — unlike cloud-based crawlers, it can be configured to crawl JavaScript-rendered pages using a built-in Chromium renderer, bypass crawl delays for speed, or respect robots.txt conventions. The tool exports crawl data to Excel, Google Sheets, or Google Data Studio for reporting. Integrations with Google Analytics 4, Google Search Console, and PageSpeed Insights add traffic, indexation, and Core Web Vitals data to each crawled URL. The free version crawls up to 500 URLs — sufficient for small sites. The paid license is £259/year (~$330/year) per user — exceptionally low-cost for a professional SEO tool of its depth. The Log File Analyser (separate free product) processes server access logs to show which URLs search engine bots are actually crawling. Screaming Frog is the de facto standard technical SEO audit tool among professional SEO agencies and in-house teams.

Strengths
  • De facto standard technical SEO audit tool — the first tool most SEO professionals install
  • Locally installed crawler: faster than cloud tools for large sites and works without internet connectivity
  • JavaScript crawling via integrated Chromium renderer for accurate JS-rendered page auditing
  • Exceptionally low cost: ~£259/year (~$330) for professional-grade technical SEO tooling
  • Integrates with GA4, Google Search Console, and PageSpeed Insights for enriched crawl data
  • Exports to Excel, Google Sheets, and Data Studio for client-ready reporting
  • Log File Analyser (free) complements crawler for bot behavior analysis
Limitations
  • Desktop application requires installation — not accessible directly from a browser
  • Large crawls on slow networks can be time-consuming on desktop hardware
  • No built-in competitor analysis, keyword research, or backlink data (purely technical audit)
  • UI is data-dense and utilitarian — learning curve for non-technical users
  • Windows primary use case — Mac and Linux versions less tested by community

Best For

SEO agencies conducting technical site audits for clients In-house SEO teams doing regular technical health checks of large website crawls Developers and site owners troubleshooting redirect chains, canonicalization errors, and metadata issues SEO specialists needing accurate JavaScript crawling for SPAs and React/Vue/Angular sites

Not Ideal For

Teams needing cloud-based crawling that runs without a local desktop machineKeyword research and content strategy (Semrush or Ahrefs better for broader SEO)Automated daily monitoring (Botify or ContentKing for continuous crawling)

Key Features

Website crawling with 100+ on-page SEO data pointsJavaScript crawling via ChromiumRedirect chain and loop detectionCanonical and hreflang auditingGA4, GSC, and PageSpeed Insights integrationStructured data validationExport to Excel, Google Sheets, Data StudioLog File Analyser (separate free tool)

Who It's For

SEO agency professionalsIn-house technical SEO teamsDevelopers troubleshooting site structureDigital marketing consultants

Integrations

Google AnalyticsGoogle Search ConsoleAhrefsSemrushMajestic

Platforms

windows mac linux

Founders

  • Daniel Sharp

Products & Tools

Screaming Frog SEO SpiderTechnical SEO / Website Crawler
Visit

Desktop website crawler for technical SEO auditing — covers 100+ on-page signals, redirect chains, canonical errors, JS crawling, and integrates with GA4/GSC.

freemium · Free planFrom Free (500 URLs); Paid £259/year per user
100+ SEO data pointsJS crawlingRedirect auditingGA4/GSC integrationExcel/Sheets export

Sources & Verification

Last reviewed September 2026

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Tags

Technical SEOWebsite CrawlerSite AuditRedirect Checker

Category

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Official Website

screamingfrog.co.uk

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