SEO Log File Analyzer by Kunal Dabi

kunaldabi.com

Free plan Web

Spec score 7.2 #20 of 27 in SEO Log File Analysis Tools

What it is

SEO Log File Analyzer by Kunal Dabi is a free web tool for examining Apache and Nginx access logs. It reports crawler activity, crawl-budget use, indexability, bot traffic, and response-time patterns. The analyzer shows requests to indexable HTML, assets, and low-value paths such as /wp-admin/. It tracks crawlers including Googlebot, Bingbot, Yahoo, DuckDuckBot, ChatGPT, Perplexity, AhrefsBot, SemrushBot, Applebot, and Bytespider. Sitemap URLs can be compared with bot-crawled URLs to find uncrawled pages. Reports include status-code and content-type breakdowns, per-bot charts, crawl coverage, and an action plan, with URL and error lists exportable to CSV. Response times are measured at p50, p95, and p99. Multiple.log,.txt, or extensionless files can be combined. The Free Log File Analyzer plan costs nothing, is free forever, and requires a daily access code.

Spec sheet

Purpose: Analyzes Apache and Nginx server access logs to surface crawl budget, bot traffic, indexability, and performance insights.Read 7 Oct 2026 · kunaldabi.com
Intended users: The page names technical SEOs, agencies, in-house SEO teams, e-commerce teams, and developers as users.Read 7 Oct 2026 · kunaldabi.com
Maker: The tool is presented as a free tool by Kunal Dabi, described on the page as a Google-certified SEO expert in India.Read 7 Oct 2026 · kunaldabi.com
Access: The tool requires the daily access code, which the page says is emailed daily to registered users or available from an administrator.Read 7 Oct 2026 · kunaldabi.com
Bot tracking: Tracks crawlers including Googlebot, Bingbot, Yahoo, DuckDuckBot, ChatGPT, Perplexity, AhrefsBot, SemrushBot, Applebot, and Bytespider.Read 7 Oct 2026 · kunaldabi.com
Crawl budget: Shows bot requests to indexable HTML, assets, and low-value paths such as /wp-admin/.Read 7 Oct 2026 · kunaldabi.com
Data handling: The FAQ says log files are processed in memory, not stored on the servers, and analysis runs locally in the session.Read 7 Oct 2026 · kunaldabi.com
Input formats: Accepts Apache Combined logs, Nginx access logs, and similar formats, including .log, .txt, or files without an extension.Read 7 Oct 2026 · kunaldabi.com
Integrations and compatibility: The page lists Google Analytics, SEMrush, WordPress, and Google among tools it works with, and says WordPress logs can be analyzed.Read 7 Oct 2026 · kunaldabi.com
Multiple files: Users can upload multiple log files to combine and analyze in one run.Read 7 Oct 2026 · kunaldabi.com
Reports: Provides status-code and content-type breakdowns, per-bot charts, crawl coverage, and an action plan; URL and error lists can be exported to CSV.Read 7 Oct 2026 · kunaldabi.com
Response times: Analyzes page response times at p50, p95, and p99 percentiles.Read 7 Oct 2026 · kunaldabi.com
Sitemap coverage: Compares sitemap URLs with URLs crawled by bots to identify uncrawled pages.Read 7 Oct 2026 · kunaldabi.com

Plans and prices

Free Log File Analyzer Free Free forever 500MB+ log file size · 15+ bots tracked · Apache and Nginx formats · no sign-up · daily access code Read 7 Oct 2026 · kunaldabi.com

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Strong points and limits

Strong points

Tracks more than 15 named crawlers
Compares sitemap and crawl coverage
Exports URL and error lists to CSV
Combines multiple log files
Processes logs in memory

Limits

Requires a daily access code
No free trial is offered
Analysis is limited to web access

Who it suits

It is aimed at technical SEOs, agencies, in-house SEO teams, e-commerce teams, and developers. Anyone analyzing Apache or Nginx logs for crawl and performance patterns fits the stated audience.

Verdict

This analyzer concentrates on crawler segmentation, crawl waste, sitemap coverage, and response-time percentiles from uploaded logs. Its access-code requirement is the main operational detail to plan for.