Log file analysis vs GSC Crawl Stats — which finds my crawl waste?

Log file analysis vs GSC Crawl Stats — which finds my crawl waste?

'Q: I want to know where Googlebot wastes time. Server logs or the Crawl Stats report?'

Short answer: Crawl Stats for a fast high-level read; raw server logs when you need to see exactly which junk URLs are eating budget.

The longer version: GSC Crawl Stats gives you trends — total requests, response codes, by file type — in minutes, no setup. Great for spotting 'crawl spiked 3x' or 'too many 404s.' But it's aggregated; it won't name the 12,000 filter permutations Googlebot is hammering.

Server logs do. Filter by Googlebot user-agent, group by URL pattern, and you'll literally see Googlebot spending 60% of crawls on /?sort= and /?sessionid= junk. That precision is what lets you fix the right thing.

Example: Crawl Stats says requests doubled; the log file reveals it's all faceted /color= combos — now you know exactly what to block.

Rule of thumb: Crawl Stats to know something's wrong, logs to know what's wrong. Big catalogs need the logs.

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