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SEO Log File Analyzer by Kunal Dabi
What it is
SEO Log File Analyzer by Kunal Dabi is a free web tool for examining Apache and Nginx access logs. Upload one or more files, including Apache Combined logs, Nginx logs, and similar .log, .txt, or extensionless files, to review crawler activity, crawl budget, indexability, and response performance. It shows bot requests for indexable HTML, assets, and low-value paths such as /wp-admin/, and tracks crawlers including Googlebot, Bingbot, Yahoo, DuckDuckBot, ChatGPT, Perplexity, AhrefsBot, SemrushBot, Applebot, and Bytespider. Sitemap comparisons identify URLs bots have not crawled. Reports include status-code and content-type breakdowns, per-bot charts, crawl coverage, an action plan, and CSV exports for URL and error lists. Response times are reported at p50, p95, and p99. Files are processed in memory and not stored on the servers, according to the FAQ.
For and against
For
- Free plan with no subscription cost
- Tracks more than 15 named crawlers
- Compares sitemap and bot-crawled URLs
- Reports p50, p95, and p99 response times
- Exports URL and error lists to CSV
Against
- Daily access code is required
- Web-only access
- No free trial is listed
The verdict
SEO Log File Analyzer combines crawler segmentation, crawl-waste reporting, sitemap coverage, and response-time percentiles in a free web workflow. Its daily access-code requirement is the main access consideration.
Who it suits
It suits technical SEOs, agencies, in-house SEO teams, e-commerce teams, and developers working with Apache or Nginx logs.
Plans and prices
Free Log File Analyzer
500MB+ log file size · 15+ bots tracked · Apache and Nginx formats · no sign-up
Read 7 Oct 2026 · kunaldabi.com
On the record
- Access
- The tool requires the daily access code, which the page says is emailed daily to registered users or available from an administrator.kunaldabi.com · read 7 Oct 2026
- Bot tracking
- Tracks crawlers including Googlebot, Bingbot, Yahoo, DuckDuckBot, ChatGPT, Perplexity, AhrefsBot, SemrushBot, Applebot, and Bytespider.kunaldabi.com · read 7 Oct 2026
- Crawl budget
- Shows bot requests to indexable HTML, assets, and low-value paths such as /wp-admin/.kunaldabi.com · read 7 Oct 2026
- Data handling
- The FAQ says log files are processed in memory, not stored on the servers, and analysis runs locally in the session.kunaldabi.com · read 7 Oct 2026
- Input formats
- Accepts Apache Combined logs, Nginx access logs, and similar formats, including .log, .txt, or files without an extension.kunaldabi.com · read 7 Oct 2026
- Integrations and compatibility
- The page lists Google Analytics, SEMrush, WordPress, and Google among tools it works with, and says WordPress logs can be analyzed.kunaldabi.com · read 7 Oct 2026
- Intended users
- The page names technical SEOs, agencies, in-house SEO teams, e-commerce teams, and developers as users.kunaldabi.com · read 7 Oct 2026
- Maker
- The tool is presented as a free tool by Kunal Dabi, described on the page as a Google-certified SEO expert in India.kunaldabi.com · read 7 Oct 2026
- Multiple files
- Users can upload multiple log files to combine and analyze in one run.kunaldabi.com · read 7 Oct 2026
- Purpose
- Analyzes Apache and Nginx server access logs to surface crawl budget, bot traffic, indexability, and performance insights.kunaldabi.com · read 7 Oct 2026
- 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.kunaldabi.com · read 7 Oct 2026
- Response times
- Analyzes page response times at p50, p95, and p99 percentiles.kunaldabi.com · read 7 Oct 2026
- Sitemap coverage
- Compares sitemap URLs with URLs crawled by bots to identify uncrawled pages.kunaldabi.com · read 7 Oct 2026
