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Screaming Frog vs Sitebulb: Which SEO Crawler Actually Finds the Skeletons in Your Site’s Closet?

Graham HolmesAugust 9, 20269 min read
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Screaming Frog vs Sitebulb: Which SEO Crawler Actually Finds the Skeletons in Your Site’s Closet?

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Ever spent hours untangling a site audit, only to feel like you’re trying to find a spider in a haystack? Welcome to the world of technical SEO. If you’re googling “Screaming Frog vs Sitebulb”, you want the fastest way to see what’s actually broken on your site—without forking out for both tools just to compare.

Here’s what you’ll learn: An honest, side-by-side breakdown of Screaming Frog and Sitebulb, who should use which, a concrete example of what they catch (and miss), and answers to the questions real SEOs are asking. By the end, you’ll know which crawler is your new best mate—and which is just an expensive spider repellent spray.

Quick Verdict

  • Short on time? Here it is. Screaming Frog is the faster, cheaper crawler most solo SEOs and small teams should start with — it is the industry-standard workhorse for finding broken links, redirects and technical issues fast. Sitebulb wins if you want guided audits, clearer visualisations and prioritised, client-ready recommendations. Tight budget and you know what you are looking for? Screaming Frog. Want hand-holding, hints and polished reports? Sitebulb.*
  • Feature Face-Off: Screaming Frog vs Sitebulb

    Let’s skip the marketing fluff. Here’s the meat-and-potatoes comparison, served up in a table to save your eyeballs:

    FeatureScreaming FrogSitebulb
    PlatformWindows, Mac, LinuxWindows, Mac
    Free VersionYes (500 URL limit)Yes (500 URL limit, some features restricted)
    Max Crawl Size500 URLs (free), 500k+ (paid, RAM-dependent)500 URLs (free), 500k+ (paid, RAM-dependent)
    Crawl SpeedFast, manual tuningFast, auto-tuned based on system
    VisualisationsBasic (crawl tree, some graphs)Advanced (interactive crawl maps & diagrams)
    Audit HintsJust data—interpret yourselfBuilt-in hints, prioritised issues
    Export OptionsCSV, XLSX, Google Sheets, integrationsCSV, PDF, Google Sheets, API
    JavaScript RenderingYes (paid)Yes (paid)
    Pricing (as of 2024)~£209/yr (GBP), $259/yr (USD)~£135/yr (GBP), $149/yr (USD)

    The Analogy: Chef’s Knife vs Swiss Army Knife

    Screaming Frog is like a classic chef’s knife—razor sharp, reliable, and a little intimidating if you’re not sure what you’re doing. It’ll slice through your site’s HTML and spit out every broken link, redirect, and missing meta tag. But it’s up to you to figure out what to cook next.

    Sitebulb, on the other hand, is the Swiss Army knife with a built-in manual. It not only tells you what’s wrong, but gives you colourful diagrams and a “to-do” list. Perfect if you want to impress the boss with a waterfall graph, or just prefer not to drown in spreadsheets.

    Worked Example: Crawling a 1,200-Page Site

    Let’s say you manage a mid-sized e-commerce site: 1,200 URLs, a mix of product and category pages. You want to find duplicate titles, broken links, and those sneaky noindex tags that somehow multiply like rabbits.

  • In Screaming Frog (paid):*
  • Spin up a crawl—set the max URLs to 1,200.
  • 10 minutes later: You get a table. Columns for everything—titles, status codes, canonical tags. You filter by “Duplicate” in the Titles tab. Result: 24 duplicate titles.
  • Switch to the “Response Codes” tab, filter for 404s. Result: 17 broken links.
  • Export to CSV, whip up your own pivot tables. You’re basically doing your own detective work, but you get every detail.
  • In Sitebulb (paid):*
  • Start a new audit—Sitebulb picks up your settings automatically.
  • 10 minutes later: You get a dashboard. “Critical Issues: 3”, “High Priority: 6”. Click “Duplicate Titles”—bam, 24 highlighted URLs, plus a visual crawl map showing clusters.
  • Click “Broken Links”—17 flagged, with the source pages mapped out.
  • Download a PDF report ready for your boss, coloured graphs and all.
  • Metric and Imperial Units?*
  • Screaming Frog shows crawl speed in URLs/minute (no imperial units, sorry). But RAM usage is MB/GB (megabytes/gigabytes), so if your system has 8GB (roughly 8,000MB), you’re golden up to about 200,000 URLs before it gets sweaty.
  • Sitebulb: Same deal—RAM is the bottleneck. Got 16GB (about 0.016TB)? You’ll crunch through massive sites, whether you prefer bytes, megabytes, or just “a heck of a lot of pages”.
  • Which Tool Wins for Technical SEO?

    Here’s what most people miss: It’s not which tool is “better”—it’s which tool is better for you.

  • Screaming Frog is for you if:
  • You want raw data, fast.
  • You love spreadsheets more than sleep.
  • You’re running regular audits and already know your way around redirects, canonicals, and crawl budgets.
  • Sitebulb is for you if:
  • You want clear explanations and hand-holding.
  • You need visual reports for clients or bosses.
  • You’re newer to technical SEO, or managing large, messy sites where prioritising issues matters.
  • Real talk: If you’re the type who reads the manual, Screaming Frog is your happy place. If you want the manual and the pictures, Sitebulb might be worth the jump.

    Pricing, Free Versions, and What You Actually Get

    Bet you didn’t realise both tools have free versions—until you hit 500 URLs and the “upgrade” button pops up like a surprise bill at the dentist.

  • Screaming Frog Free:
  • Crawl up to 500 URLs per site.
  • No JavaScript rendering, no API integrations.
  • Still enough for small sites, quick checks, or if you’re just dabbling.
  • Sitebulb Free:
  • Also 500 URL limit.
  • Some features (PDF reports, advanced hints) locked away.
  • Still handy for a first look, or impressing your manager with graphs before you ask for the credit card.
  • Want more free tools?* Check out our free SEO audit tools on KeywordNumbers for a quick health check—no download, no nagging for your email.
  • Integrations, Exports, and Workflow

    Screaming Frog plugs into Google Analytics, Search Console, PageSpeed Insights, and more. Exports are spreadsheet heaven: CSV, XLSX, or even straight to Google Sheets. If you like to roll up your sleeves and automate, it’s got a CLI (command-line interface) too.

    Sitebulb is less about integrations, more about pretty reports. Exports go to CSV or PDF (great for clients). The API is there, but it’s aimed at people who want to build dashboards, not just audit.

    Questions people are actually asking

    How to use Screaming Frog?

    Open the app, enter your website URL, and hit ‘Start’. Screaming Frog will crawl your site, spitting out a table of URLs and issues—broken links, missing tags, and more. For a deep dive, filter by each column (e.g., 404s in “Response Codes”), or export the data to Excel for further slicing and dicing. It’s as close as SEO gets to using a metal detector on your own lawn.

    Is Screaming Frog free?

    Yes, but only up to 500 URLs per crawl. Beyond that, you’ll need the paid version. Most small brochure sites fit under the free limit; anything bigger (e-commerce, news, or blogs with more than 500 pages), and you’ll need to upgrade.

    Which is better for large sites?

    Both tools can handle big sites—think 100,000+ URLs—if your machine has enough RAM. Screaming Frog is slightly faster for raw data crawls, while Sitebulb’s visualisations and prioritised issues make big audits more digestible. If you like seeing where the problems cluster, Sitebulb’s crawl maps are a lifesaver.

    Do these tools find duplicate content?

    Absolutely. Both flag duplicate titles, meta descriptions, and content. Screaming Frog gives you the rows, Sitebulb adds the context and colour-coded urgency. For really deep duplicate checks (text similarity, not just tags), Sitebulb has a slight edge.

    Can either tool handle JavaScript-heavy sites?

    Yes, but only in the paid versions. Both support JavaScript rendering—meaning they’ll crawl pages that build content on the fly (like React or Angular sites). Just be warned: it’s slower, and you’ll want plenty of RAM.

    Do I need both tools?

    Most SEOs stick with one, but agencies often use both—a bit like having both a sledgehammer (Screaming Frog) and a Swiss Army knife (Sitebulb) in the toolbox. If you’re solo or working on one brand, pick the one that fits your workflow. If you’re client-facing, Sitebulb’s reports might save you hours of explaining.

    Are there free alternatives for small sites?

    Yes! Try our free SEO audit checker for instant, browser-based site health reports—no install required. Great for sites under 500 pages, or if you just want a quick look before the full crawl.

    Conclusion

    Screaming Frog and Sitebulb both dig deep into your site’s technical skeletons, but each has its own style—raw power versus guided insight. For speed and data, grab Screaming Frog. For clarity and impressing clients, Sitebulb is your mate. Not sure yet? Run a free audit with KeywordNumbers’ SEO checker before you invest in the big guns. Your site (and your sanity) will thank you.

    Free tools to put this into practice

    Reading is one thing — testing your own pages is what moves the needle. Here are the free KeywordNumbers tools that pair best with this guide:

  • Keyword Search Volume Checker — see estimated monthly searches, trends and seasonality for any keyword.
  • AI Keyword Ideas — generate fresh, related keyword ideas around your topic in seconds.
  • Keyword Density Checker — check how often your target terms appear so your content reads naturally.
  • Page Speed Analyser — test how fast a page loads and see exactly what is slowing it down.
  • Meta Tag Analyser — audit every meta tag on a page in one click.
  • Every one of our free SEO tools is genuinely free to use, with no sign-up required.

    Free ebook: The Free SEO Stack

    Keyword research without paying for Ahrefs — the complete guide. Read it online or download the PDF.

    • Which free tools replace Ahrefs, SEMrush & Moz
    • Step-by-step keyword research workflow
    • How to find content gaps without paying a penny
    • The exact stack KeywordNumbers is built on

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