Sitebulb vs Screaming Frog: Which Technical SEO Crawler Should You Choose?

Sitebulb vs Screaming Frog: which desktop crawler should you use?

Both Sitebulb and Screaming Frog have earned strong reputations in the technical SEO community. They occupy the same basic category — desktop website crawlers for SEO auditing — but they approach the job from different philosophies.

This guide compares them across the key criteria that matter for daily SEO work: data depth, visualisation, ease of use, pricing and specific use cases.

What each tool does best

Screaming Frog: maximum control, minimum hand-holding

Screaming Frog SEO Spider has been around since 2010 and is one of the most widely used technical SEO tools in the industry. It is built for power users: you can extract almost any data element from crawled pages using XPath, CSS selectors and regex; integrate directly with Google Analytics and Search Console for combined reporting; connect to PageSpeed Insights for performance data; and export to Google Sheets for custom analysis.

Screaming Frog's Crawl Analysis view, Custom Extraction and custom JavaScript execution make it genuinely powerful for complex, bespoke audit requirements. If you know what you are looking for and how to find it, Screaming Frog gives you the tools to get there.

Sitebulb: clear priorities, visual architecture

Sitebulb launched in 2017 with an explicit mission to make technical SEO audits faster to produce and easier to understand. Its Hints system generates a prioritised list of issues, each with a plain-English explanation of why it matters and what to do about it. Its treemap visualisations show the relative size and health of different site sections at a glance. Its Lighthouse integration measures Core Web Vitals alongside technical issues within a single crawl.

For agencies that produce audit reports for clients who are not technical SEO specialists, Sitebulb's output is significantly more presentable without additional manual formatting.

Feature comparison

The table below summarises where each tool stands on key capabilities:

Feature	Sitebulb	Screaming Frog
JavaScript rendering	✅ Chrome-based	✅ Chrome-based
Crawl visualisations (treemaps)	✅ Yes	❌ Limited
Issue Hints (guided prioritisation)	✅ Yes	❌ No
Lighthouse / Core Web Vitals	✅ Built-in	✅ Integration
Custom data extraction (XPath/CSS)	⚠️ Limited	✅ Advanced
Google Analytics integration	✅ Yes	✅ Yes
Google Search Console integration	✅ Yes	✅ Yes
API access	⚠️ Cloud only	✅ Yes
Python scripting integration	❌ No	✅ Yes
Cloud version available	✅ Yes	❌ No
Multi-seat team use	✅ Team plans	⚠️ One licence per machine

Visualisations: Sitebulb's clearest advantage

Sitebulb's treemap and link-graph visualisations are genuinely difficult to replicate in Screaming Frog without additional manual work or third-party tools. The treemap shows every crawled URL as a proportionally sized rectangle, coloured by status — making it immediately clear which sections of a site are healthy, which have issues and which are large enough to matter.

The link-graph view maps how pages connect internally, making it possible to identify orphaned content, understand how link equity flows through the site and explain internal linking decisions visually to stakeholders. These visualisations are particularly valuable for larger sites where navigating raw data exports becomes unwieldy.

Custom extraction: Screaming Frog's clearest advantage

Screaming Frog's Custom Extraction feature allows users to pull almost any data point from a page using XPath, CSS selectors or regex — structured data values, specific HTML attributes, price data, rating schema, custom metadata fields and more. This makes it possible to audit things that are not standard SEO fields, which is often required for ecommerce sites with complex structured data requirements.

Screaming Frog also integrates with Python via its API, which allows technical SEOs to automate audit workflows, process crawl data programmatically and combine crawl results with other data sources. For teams with strong technical resources, this extensibility is a significant capability that Sitebulb does not replicate.

Pricing in detail

Screaming Frog charges £199/year for its unlimited-crawl licence. This is a low, predictable flat rate — one payment covers a single machine for a full year with no usage limits on crawl size or features.

Sitebulb is priced per seat on a monthly or annual subscription: approximately £13.50/month for Desktop Individual, scaling to £29.50/month for team seats. Sitebulb Cloud is priced separately based on crawl volume. For a single user doing occasional audits, Screaming Frog is typically cheaper. For teams that need multiple licences and organised collaborative access, Sitebulb's team plans may be competitive — and the Cloud option adds flexibility Screaming Frog does not offer.

Which is better for agencies?

This is genuinely a matter of workflow. Agencies whose audits go directly to technically sophisticated clients (or in-house developers) often prefer Screaming Frog for its depth and the fact that most technical SEOs already know it. Agencies whose audits go to business clients who need plain-English explanation often prefer Sitebulb because the Hints system and visualisations reduce the time spent turning data into accessible findings.

Many agencies use both: Screaming Frog for complex custom extractions and script-heavy audits; Sitebulb for standard technical audits that need clear, visual client reporting.

For larger sites: when to move beyond both

Both Sitebulb and Screaming Frog are primarily desktop tools. For very large sites (hundreds of thousands or millions of URLs), cloud-based enterprise crawlers like Lumar handle scale that desktop software cannot. Lumar also adds automation (scheduled crawls, CI/CD integration, regression tracking) that neither desktop tool provides. See our SE Ranking vs Lumar guide for more context on where enterprise technical SEO starts.

For common technical SEO issues that both tools help identify, our guide to technical SEO's most frequent problems is a useful reference alongside either crawl tool.

Verdict: Sitebulb vs Screaming Frog

Frequently asked questions

Is Sitebulb easier to use than Screaming Frog?

For most intermediate SEOs, yes. Sitebulb's Hints system and visual treemaps reduce the interpretation work required compared to navigating Screaming Frog's raw data tabs. Screaming Frog's interface is powerful but assumes familiarity with technical SEO concepts. Neither requires advanced technical skills to use for standard audits.

Can Sitebulb crawl JavaScript sites?

Yes. Sitebulb uses a Chrome-based rendering engine to execute JavaScript before crawling, giving an accurate view of dynamically rendered content. Screaming Frog also supports JavaScript rendering. Both tools handle modern JavaScript frameworks such as React, Angular and Next.js.

Is Screaming Frog free?

Screaming Frog offers a free version that crawls up to 500 URLs. The paid version (£199/year) removes this limit and adds full features including Google integrations, custom extraction and JavaScript rendering. For most professional use, the paid licence is necessary.

Does Sitebulb have a free trial?

Yes. Sitebulb offers a 14-day free trial that includes full access to Desktop features. This is enough time to run a meaningful audit on a real site and evaluate whether it fits your workflow before committing to a subscription.

Which tool is better for Core Web Vitals?

Both integrate with Lighthouse for Core Web Vitals measurements. Sitebulb makes this integration more prominent — CWV data is included by default in the crawl dashboard alongside technical issues. Screaming Frog requires configuring the PageSpeed Insights integration. For teams that include Core Web Vitals in every audit, Sitebulb's workflow is slightly more streamlined.