How does version 12.6 stack up against alternatives like Sitebulb, DeepCrawl (now Lumar), or Semrush Site Audit?
| Feature | Screaming Frog 12.6 | Lumar | Sitebulb | | :--- | :--- | :--- | :--- | | Pricing | Free (500 URLs) / £149/year | Enterprise ($$$) | $15+/month | | Local Crawling | Yes (Desktop native) | No (Cloud) | Yes | | AI Integration | Native (GPT) | No | No | | Custom JS Execution | Yes (New in 12.6) | Limited | Yes (Advanced) | | Crawl Comparison | Yes (New in 12.6) | Yes | Yes |
Verdict: For the price, Screaming Frog SEO Spider 12.6 offers unparalleled depth. Cloud crawlers are better for massive scale (1M+ URLs) or collaborative teams, but for raw speed, customization, and one-off audits, version 12.6 is unbeatable. Screaming Frog SEO Spider 12.6
Hreflang errors remain one of the top three most missed international SEO issues. Version 12.6 introduces a dedicated Hreflang Validation Dashboard.
Now, the tool not only validates the syntax (e.g., hreflang="en-us") but also checks for: How does version 12
The new reporting filter allows you to export only "Invalid Return Links" – a massive time-saver for global e-commerce sites.
JavaScript-heavy websites (especially those built on React, Vue, or Angular) have historically been difficult for traditional crawlers. While previous versions included a JavaScript rendered crawl mode, version 12.6 introduces a dedicated Custom JS tab. Hreflang errors remain one of the top three
What it does:
You can now execute custom JavaScript snippets during the crawl. This allows you to interact with dynamic elements like "Load More" buttons, infinite scroll scripts, or login-triggered content.
Why it matters for SEO:
Google primarily indexes rendered HTML. If your SEO Spider cannot see the content (because it requires a button click), your standard crawl is incomplete. With the Custom JS tab, you can simulate user interactions to ensure your og:image tags or lazy-loaded product descriptions are actually being discovered.