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SEO · head to head

Screaming Frog SEO Spider vs SEMrush

Screaming Frog SEO Spider logo

Screaming Frog SEO Spider

SEO

Desktop crawler for technical SEO audits and site analysis

From
Free
Rated
-
Full reviewWebsite
SEMrush logo

SEMrush

SEO

Do SEO, content marketing, competitor research, PPC and social media marketing from just one platfor

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Screaming Frog SEO Spider free version limited to 500 URL crawl limit for meaningful analysis; SEMrush free tier limited to 10 reports per day across all tools
  • They diverge on capability: Screaming Frog SEO Spider covers Crawl up to 500 URLs (free) or unlimited (paid), SEMrush covers Keyword research.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Screaming Frog SEO Spider and SEMrush actually diverge.

Attributes where Screaming Frog SEO Spider and SEMrush differ
AttributeScreaming Frog SEO SpiderSEMrush
PlatformsWindows, macOS, LinuxWeb, Mobile app
FoundedUnknown2008

Identical on both: starting price (Free), pricing model (subscription), free tier (Yes), user rating (Not yet rated), category (SEO).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Screaming Frog SEO Spider

  • Crawl up to 500 URLs (free) or unlimited (paid)
  • 300+ SEO issue checks
  • JavaScript rendering with Chromium
  • XML sitemap generation
  • Custom data extraction
  • Google integrations
  • Scheduled crawls and comparisons
  • Multi-language support

Only in SEMrush

  • Keyword research
  • Site audit
  • Competitor analysis
  • Backlink analytics
  • Rank tracking
  • Content marketing
  • PPC research
  • Social media tools

What people use each for

The jobs each tool is most often brought in to do.

Screaming Frog SEO Spider

  • Identify broken links and server errors on large sitesnot SEMrush
  • Audit redirect chains during site migrationsnot SEMrush
  • Analyze and fix duplicate content issuesnot SEMrush
  • Extract and validate structured data on pagesnot SEMrush
  • Monitor site health with scheduled crawlsnot SEMrush

SEMrush

  • SEO keyword research and competitor analysisnot Screaming Frog SEO Spider
  • Website performance tracking and auditingnot Screaming Frog SEO Spider
  • Content marketing optimizationnot Screaming Frog SEO Spider
  • PPC advertising researchnot Screaming Frog SEO Spider

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Screaming Frog SEO Spider

  • Free version limited to 500 URL crawl limit for meaningful analysis
  • Desktop application required, not available as web-based tool
  • Unlimited crawls depend on system memory and storage capacity
  • Annual licensing model with no monthly option
  • Learning curve for advanced features like custom extraction

SEMrush

  • Free tier limited to 10 reports per day across all tools
  • Keyword tracking capped at 500 per month on entry tiers (SEO and Starter plans)
  • Additional users cost £45/month per user above base subscription
  • Most advanced features require Advanced plan (£455.67/month), making entry cost significant for small teams

Pricing, plan by plan

Screaming Frog SEO Spider

Free
  • FreeFree
    • 500 URL crawl limit
    • Core features included
    • Link checking and metadata analysis
  • Paid License$199/year
    • Unlimited URL crawls (limited by system memory/storage)
    • All free version features
    • Advanced features unlocked

SEMrush

Free
  • FreeFree
    • 1 demo project with basic features
    • No credit card required
    • For trying out the platform
  • SEO Plan$117.33/month
    • Annual billing ($1407.96/year)
    • Monitor 5 websites
    • Track 500 keywords daily
  • Starter Plan$165.17/month
    • Annual billing ($1982.04/year)
    • 5 websites, 500 keywords tracked daily
    • MCP access with 50 AI prompts tracked across search platforms
  • Pro+ Plan$248.17/month
    • Annual billing ($2978.04/year)
    • 15 websites, 1,500 keywords daily
    • 100 AI prompts tracked

Which should you pick?

Choose Screaming Frog SEO Spider if

  • You need crawl up to 500 urls (free) or unlimited (paid).
  • You want to start without paying.
  • You work on Windows, macOS, Linux.
  • You also want 300+ seo issue checks.
Screaming Frog SEO Spider review

Choose SEMrush if

  • You need keyword research.
  • You want to start without paying.
  • You work on Web, Mobile app.
  • You also want site audit.
SEMrush review

Questions people ask

Is Screaming Frog SEO Spider or SEMrush better?
Neither clearly leads. Screaming Frog SEO Spider starts at Free and SEMrush at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Screaming Frog SEO Spider or SEMrush?
Screaming Frog SEO Spider starts at Free and SEMrush at Free.
Does Screaming Frog SEO Spider or SEMrush run on more platforms?
Screaming Frog SEO Spider runs on Windows, macOS, Linux. SEMrush runs on Web, Mobile app.
Can I use Screaming Frog SEO Spider for free?
Both have a free tier, so you can try either at no cost before committing.
What is Screaming Frog SEO Spider best used for?
Screaming Frog SEO Spider is most often used for identify broken links and server errors on large sites, audit redirect chains during site migrations, analyze and fix duplicate content issues, extract and validate structured data on pages. Of those, identify broken links and server errors on large sites and audit redirect chains during site migrations are not what SEMrush is typically brought in for.
What can Screaming Frog SEO Spider do that SEMrush cannot?
Screaming Frog SEO Spider covers Crawl up to 500 URLs (free) or unlimited (paid), 300+ SEO issue checks, JavaScript rendering with Chromium, XML sitemap generation. SEMrush covers Keyword research, Site audit, Competitor analysis, Backlink analytics.

Answered from the vendors’ own pages

Screaming Frog SEO Spider: What is the difference between free and paid Screaming Frog licenses?

The free version crawls up to 500 URLs with core features. The paid license (GBP 199/year) includes unlimited URL crawls limited only by system memory and storage, plus advanced features.

Source
SEMrush: How much does Semrush cost?

Semrush starts at $117.33/month for the SEO Plan with annual billing and goes up to $455.67/month for the Advanced Plan. A free tier is available with 1 demo project and basic features. Prices increase with monthly billing instead of annual.

Source
Screaming Frog SEO Spider: Can Screaming Frog crawl JavaScript-rendered content?

Yes. Screaming Frog renders JavaScript through headless Chromium, enabling crawls of React, Angular, Vue.js, and other JavaScript frameworks.

Source
SEMrush: What does each Semrush plan include?

Plans scale from 5 to 40 websites monitored, 500 to 5,000 keywords tracked daily, and include progressively more features like MCP access and API access at higher tiers. Advanced Plan includes dedicated support.

Source
Screaming Frog SEO Spider: What platforms does Screaming Frog support?

Screaming Frog SEO Spider is available for Windows, macOS (Apple Silicon and Intel), and Linux (Ubuntu and Fedora).

Source
SEMrush: Are there add-on options for Semrush?

Yes, additional users cost $45/month, and reporting features range from $10-$20/month. Enterprise plans with unlimited projects and dedicated support are available with custom pricing.

Source
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