AuditLabs SEO Log File Analyzer vs Crawl Lab

AuditLabs SEO Log File Analyzer examines web server access logs to identify AI bot traffic, referrals from language-model services, and crawler behavior. It detects bots including GPTBot, ClaudeBot, and Perplexity, and can identify referrals from ChatGPT and Claude. Crawl analysis covers patterns, session depth, and navigation flows. Upload formats include CSV with headers, JSON, JSON Lines, Apache/nginx combined logs, and Cloudflare logs. Users can preview files and map columns so fields are detected correctly. A detailed report is available to download, but full results require a free account. AuditLabs estimates processing times from 10–30 seconds for files under 100 MB to 3–15 minutes for files above 1 GB. Free accounts allow 20 standard runs and 2 heavy runs per month, with 1.5 GB maximum per upload. Supporter costs $7.99 a month and includes 200 tool runs monthly, uploads up to 3.5 GB, priority processing, and email support. AuditLabs says its tools are built by SEO practitioner Antonio Maculus, Director of AI Content Strategy at Better Collective.

Crawl Lab is a free web toolbox for analyzing server logs and AI crawler activity. It accepts Apache and Nginx common or combined logs, including compressed.gz files, and reports crawled pages, crawl frequency, wasted crawl budget, and bot errors. The analyzer recognizes GPTBot, OAI-SearchBot, ClaudeBot, PerplexityBot, Google-Extended, Bytespider, Amazonbot, and other crawlers, checking their authenticity against official IP ranges. Processing occurs in the browser, so log files and IP addresses stay on your machine and are not uploaded or stored. No registration is required. Streaming reads allow analysis of several gigabytes or a full month of logs without a server-imposed size limit. Crawl Lab targets technical SEO practitioners concerned with SEO and generative-engine visibility. Its results show what crawlers fetched, not whether pages were indexed or how they rank. An llms.txt generator and AI citation audit are listed as coming soon. The free plan costs nothing, with no paid tier.