Log to CSV (Regex)
Convert any custom log format into CSV using a regex with named capture groups.
About Log to CSV (Regex)
Log to CSV converts any custom log format into clean CSV using a regular expression with named capture groups — each group becomes a column, so you can structure app logs, audit trails or cron output in seconds.
How to use Log to CSV (Regex)
- 1Paste or type your data into the input box above (a sample is pre-filled so you can try it instantly).
- 2Adjust any options on offer — delimiter, columns, formatting and so on — to match what you need.
- 3Parsing happens instantly as you type; review the result in the output panel.
- 4Click Copy to grab the output or Download to save it as a file — Log to CSV (Regex) keeps everything on your device.
Why use Log to CSV (Regex)?
- ✓Structuring proprietary application logs for analysis
- ✓Extracting fields from audit or security logs
- ✓Turning cron or batch output into a spreadsheet
- ✓100% free with no sign-up, no watermark and no usage limits
- ✓Runs entirely in your browser — your data is never uploaded or stored
- ✓Works offline once loaded, with instant results and one-click copy or download
Frequently asked questions
How do I define columns?+
Write a regex with named groups such as (?<level>\w+); each named group becomes a CSV column, and every matching line becomes a row.
What if a line doesn't match?+
Non-matching lines are skipped, so a single malformed entry won't corrupt the output.
Is it free to use?+
Yes — it is completely free with no sign-up, no account and no usage limits. There is no watermark and no paywall, so you can process as many files as you like.
Is my data private and secure?+
Yes. This tool runs entirely in your browser using client-side JavaScript — your data is never uploaded to a server, stored or logged. Once the page has loaded you can even use it offline, which makes it safe for confidential or proprietary files.
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