Crawling & technical audit
Semrush
The audit skill names real modules — crawlability and indexability, canonicals, structured data, mobile parity and rendering, Core Web Vitals judged at Google's own good marks at the 75th percentile — plus a prioritized fix list, and Enterprise mentions multi-million-page crawling. But no crawl page cap is published per plan, and we found no public information on scheduled crawl cadence, log-file comparison against what Google fetched, or regression detection between crawls.
SISTRIX
Scheduled weekly crawls at stated page limits (30.000 to 4.000.000 URLs per month), JavaScript crawling, error categories with change deltas and concrete fix suggestions sorted by importance, and Core Web Vitals from both lab and field data with daily Lighthouse runs stored permanently and downloadable as JSON. I found no public information on log-file comparison against what Google fetched, indexation or canonical diagnosis, or issue weighting by traffic, so this is a strong crawl, not yet a diagnosis.