Log File Analyzer

How the log file analyzer works

Paste raw access-log lines from Apache or Nginx and this tool parses the Common Log Format and Combined Log Format entirely in your browser — your server logs are never uploaded. It extracts the client IP, request method, path, response status, and bytes transferred from each line, then aggregates the totals: traffic volume, unique visitors, status-code breakdown, the busiest endpoints, and which clients (and bots) hit you hardest.

The 4xx/5xx error tally surfaces broken links and failing endpoints at a glance, and the top-IP + top-user-agent tables make it easy to spot crawlers and abusive clients (e.g. repeated /wp-login.php probes). Paths are grouped without their query string so endpoints aggregate cleanly. For decoding individual codes, see the HTTP Status Codes reference; to format request URLs, try the URL Parser.