How server log parsing works
Nginx and Apache access logs record HTTP client requests using standard formats like Common Log Format (CLF) and W3C Combined Log Format. Each log entry contains the client IP, timestamp, HTTP method, URL path, HTTP status code, payload bytes, referer, and user-agent string.
EasyExtract parses log streams client-side in browser memory without sending log files anywhere.
How to parse server access logs
- Drop your .log file. Drop your Nginx or Apache access log file onto the box above or click to browse.
- Automatic regex field extraction. The browser parses Common Log Format (CLF) and Combined Log Format lines in memory.
- Inspect parsed log fields. View client IP addresses, 4xx/5xx status codes, request endpoints, and timestamps.
- Export log data to CSV. Download the parsed log table as a formatted CSV spreadsheet or copy unique IP lists.
What fields get extracted from log files?
- Client IP Addresses: IPv4 and IPv6 addresses.
- HTTP Status Codes: 2xx (Success), 3xx (Redirects), 4xx (Client Errors like 404), 5xx (Server Errors like 500).
- Request Endpoints & Methods: GET, POST, PUT, DELETE paths.
- Timestamps: Server request execution times.
Supported log formats
Supports Nginx access logs, Apache Combined logs, W3C HTTP logs, and raw text log files.
Privacy and security
Log parsing is executed 100% inside your browser. No IP addresses, user agents, or access log contents leave your computer.
Known limitations
Extremely large log files exceeding 300 MB may consume significant browser RAM during regex matching.
Common use cases
- Security Audits — Identifying suspicious IP addresses scanning `/admin` endpoints.
- Error Monitoring — Filtering 500 internal server errors and 404 broken links.
- Traffic Analysis — Extracting top client IPs and requested file paths.
Log Field Extractor vs IP Address Extractor
While the IP address extractor extracts raw IP strings from text, this tool structures full Nginx/Apache access log entries into CSV tables. For URLs, use our URL extractor.
Frequently asked questions
How do I extract IP addresses from Nginx logs?
Drop your Nginx access.log file above to parse all log entries into a CSV table and copy unique client IPs.
What log formats are supported?
Nginx access logs, Apache Combined logs, and W3C HTTP log formats are supported.
Is my log file uploaded to a server?
No. Log parsing happens 100% inside your browser memory. Nothing is uploaded.
Can I filter 404 and 500 error logs?
Yes. All HTTP status codes are highlighted and structured into CSV columns.