Upload server access logs and visualize bot crawl patterns, status codes, response times, and crawl frequency by URL path.
Server Log File Analyzer converts access-log records into views of bot crawl frequency, requested URL paths, HTTP status codes, and recorded response times. Use it to see which paths crawlers reached, how often they returned, and whether those requests received successes, redirects, or errors. Because access logs can contain IP addresses, request targets, and user-agent strings, the browser-only processing is relevant: the selected file is not uploaded. The main trap is treating a bot name as verified identity. User-agent text can be imitated, so a label alone does not authenticate a crawler.
The analyzer reads the fields available in each access-log record, including the request target, HTTP status, user-agent text, and response duration when that duration is actually present in the log format. It groups crawler requests around URL paths and repeated visits. Missing timing data cannot be reconstructed, and malformed or inconsistent lines can limit what appears in the resulting views.
Frequency and status views show how often recorded bots requested each path and what the server returned. Response-time views expose timing values recorded for those requests, making it possible to compare frequently crawled areas with slower ones. The unit and meaning of a timing field come from the source log format. Counts refer to requests in the selected file, not sessions, unique pages, or index entries.
No. A user-agent name is only a claim made by the requester. Authenticating Google crawlers requires the verification procedure Google publishes, using the request's IP address and DNS or published IP ranges. Use the analyzer's bot grouping for pattern analysis, not as proof that a particular organization operated the crawler.
No. It can show whether the selected logs contain crawler requests for that path and which status and timing the server recorded. It cannot observe canonical selection, rendering decisions, content evaluation, duplicate handling, or the search engine's indexing state. Absence from one log file may also reflect incomplete coverage rather than no crawl.
The behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
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