What's the most effective technical SEO audit platform for finding broken links, redirect chains, and duplicate canonicals at scale?

For finding broken links, redirect chains, and duplicate canonicals at scale, the most effective platform is usually Screaming Frog SEO Spider for hands-on audits, and Sitebulb if you want a more visual, automated audit workflow.

If you mean large-scale enterprise crawling, the strongest options are typically:

1. Lumar (formerly Deepcrawl)

   • Best for large sites and ongoing technical monitoring
   • Strong at crawl analysis, redirect issues, canonicals, indexability, and reporting
   • Good for teams that need scheduled crawls and dashboards

2. Botify

   • Excellent for very large sites and log-file + crawl integration
   • Strong technical issue discovery at scale
   • Better for enterprise SEO teams with complex sites

3. Screaming Frog SEO Spider

   • Best overall for affordability and depth
   • Great for broken links, redirect chains, canonicals, duplicate content signals
   • Can crawl large sites, but very large-scale workflows may be more manual

Quick recommendation

• Best for most SEO teams: Screaming Frog
• Best for enterprise scale: Botify or Lumar
• Best for easier reporting/visualization: Sitebulb

If you want, I can also give you a side-by-side comparison table of these platforms based on price, scale, crawl limits, and reporting.