Parse Server Logs with Regex

Write regex patterns to extract timestamps, IP addresses, error codes, and structured data from log files.

Níl gá le logáil isteach

Regular expression

//g

Flags:

Examples:

Test text

Matches

The quick brown fox jumps over the lazy dog. Pack my box with five dozen liquor jugs.Enter a pattern above to see matches highlighted here.

Log Parsing tips

📜

Paste a sample from your log file into the test text area, then build your pattern against real data. Logs have many edge cases.

🔍

Use capture groups () to extract specific parts: IP, timestamp, status code. Each group is shown separately in the match details panel.

💡

Named groups (?<ip>\d+\.\d+\.\d+\.\d+) make your regex self-documenting and easier to use in Python's re.findall() or JavaScript's match().

⚡

Enable the "m" (multiline) flag so ^ and $ match the start and end of each log line, not just the entire input.

Cuir isteach

Enter your data into the tool above. Everything stays local to your browser.

Próiseas

The tool processes your data instantly in your browser using JavaScript. No server, no waiting.

Íosluchtaigh

Get your result instantly. Nothing is stored after you leave the page — complete privacy.

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