AI Bot Log Parser
Our AI Bot Checker tells you whether AI crawlers are allowed to index your site – what robots.txt and meta-robots permit. What it doesn’t answer: which bots actually show up, how often, and which content they prefer. That information lives in your server access logs.
The AI Bot Log Parser closes that loop. You paste a slice of your Apache or Nginx access log into the tool, and it tallies hits per bot – with a chart, a table, and the top URLs per bot. Your log never leaves your browser. All parsing runs locally in JavaScript.
AI-bot Access-Log Parser
Paste a slice of your server access log to see which AI crawlers are actually hitting your site, how often, and which pages they visit. Pairs with the AI Bot Checker (which only checks whether AI bots are allowed in your robots.txt).
How the AI Bot Log Parser Works
- Paste a log slice: Copy a few thousand lines from your access log (typically at
/var/log/apache2/access.log,/var/log/nginx/access.log, or labelled “Raw access” in your hosting panel) and drop it into the textarea. - Or load the sample: No log handy? Click “Load sample log” — the tool drops in 30 synthetic lines so you can see the output immediately.
- Analyze: Hit “Analyze log”. For large logs (over 5,000 lines) a progress bar shows parsing status.
- Read the results: Summary card (lines parsed, bot hits, time range, top vendor), per-vendor doughnut chart, sortable per-bot table, and an expandable list of each bot’s most-fetched URLs.
- Export: “Export CSV” downloads the per-bot tally for spreadsheets or reporting.
Which bots are detected?
- AI bots (31 total) shared with the AI Bot Checker’s database: GPTBot & ChatGPT-User (OpenAI), ClaudeBot (Anthropic), PerplexityBot (Perplexity), CCBot (Common Crawl), Google-Extended (Google), Bytespider (ByteDance), Applebot-Extended, Meta-ExternalAgent — and many more.
- Search bots as a context baseline: Googlebot, Bingbot, DuckDuckBot, Applebot, YandexBot, Baiduspider. So you immediately see how AI-crawler traffic compares to your “regular” search-engine traffic.
Which log formats are supported?
- Apache Combined Log Format (standard):
IP - - [date] "GET /path HTTP/1.1" 200 1234 "referer" "user-agent" - Nginx default log format (same structure): auto-detected
- Lines without a User-Agent field (Apache Common) are skipped because bot detection isn’t possible without one
- Malformed lines are silently ignored; the counter only reports successfully parsed lines
Changelog
- First version of the AI Bot Log Parser released
- Detects 31 AI bots from the AI Bot Checker’s database, plus 6 major search bots as a comparison baseline
- Output: per-vendor doughnut chart, per-bot table, expandable top-URL list, status-code badges (2xx/3xx/4xx/5xx), CSV export
- Pure browser-side processing — logs are never uploaded
Background: What is the analysis good for?
1. Reality check against your config
Your robots.txt may permit GPTBot — but does it actually show up? Or does it show up far more than you expected? The log parser shows you facts, not theory.
2. Which content do AI crawlers care about?
The top-URL list per bot reveals which of your pages ChatGPT, Claude, or Perplexity actively pull. That content is highly likely to feed the AI-generated answers about your topic — a valuable signal for your content strategy in the GEO (Generative Engine Optimization) era.
3. Understand bandwidth costs and server load
AI crawlers can be aggressive. If a bot makes five-figure requests per day, it’s worth examining the crawl frequency and possibly adding a Crawl-delay entry in robots.txt or a WAF rule.
4. Spot problems
Status-code badges show whether a bot is getting an unusual share of 4xx or 5xx. If so, your AI-relevant content may be broken for crawlers — and the AI answers will be based on incomplete or stale data.
Frequently Asked Questions
Is my log data uploaded anywhere?
No. All processing happens in your browser via JavaScript. There are no AJAX calls, no server submission, no caching. You can verify this in your DevTools “Network” tab while the analysis runs — nothing happens there.
How big can the log be?
The tool comfortably handles hundreds of thousands of lines — processing happens in chunks so the browser stays responsive. For logs beyond ~5 MB of text, prefer a smaller time range (e.g. the last 24 hours), since otherwise the analysis takes a few seconds.
Why no file upload?
Deliberately omitted in v1 to keep the privacy promise as crisp as possible: copy & paste is transparent; a file upload would optically suggest a server upload (even if the file were processed locally). File upload is on the list for a future version.
What if a bot is missing from the list?
The bot list is the same as the one our AI Bot Checker uses. Updates happen centrally there, so both tools always share the same coverage. If a new AI bot appears, please report it — it’ll be included with the next update.
Are bots that spoof their User-Agent detected?
No. The tool checks the User-Agent string as logged. If a scraper pretends to be a browser, it won’t be flagged as a bot. Reverse-DNS validation against official IP ranges is planned for a future version.
How is this different from the AI Bot Checker?
The AI Bot Checker answers the configuration question: do the 31 known AI bots have permission via robots.txt and meta-robots? The AI Bot Log Parser answers the reality question: which bots are actually showing up, how often, and on which URLs? The two tools complement each other.
Does it work with IIS or other web server logs?
Apache Combined and Nginx default are natively supported. IIS standard logs use a different tab-separated format with a header line — you’d need to convert the log first or wait for IIS support to be added.
