Logfmt Parser
Parse logfmt-style log lines into a readable key-value table, handling quoted values with spaces. Great for structured log analysis.
Last reviewed by the Radiatus Cloud team
Parse a logfmt key=value log line into readable fields.
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Parse logfmt log lines
Logfmt is a popular structured logging format where each log line is a series of key=value pairs, such as level=info and msg="request handled". This parser reads a logfmt line and breaks it into a clean, aligned key-value listing that is far easier to scan than the raw string. It correctly handles quoted values that contain spaces, which is the main subtlety of the format, so a message in quotes is kept intact rather than split.
Aligning the keys makes the fields line up vertically, turning a dense line into a readable record.
Reading structured logs
Structured logging formats like logfmt make logs machine-parseable while remaining human-readable, which is why many services and libraries adopt them. When you need to inspect a single line closely, pulling it apart into its fields helps you spot the status, duration, error or any other value quickly. This is handy during debugging and incident response when you are reading raw logs rather than querying a log system.
The parser works on the text you paste, so nothing is sent anywhere. For bulk analysis, a proper log pipeline is better, but for a quick look this is ideal. All processing happens locally in your browser.
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Frequently Asked Questions
What is logfmt?
It is a structured logging format where each line is a series of key=value pairs, balancing machine-parseability with human readability.
How are quoted values handled?
Values wrapped in quotes, which may contain spaces, are kept intact as a single field rather than being split, with escaped quotes decoded.
Why align the keys?
Aligning the keys vertically makes the fields easy to scan, turning a dense single line into a readable record.
Is my log data uploaded?
No. Parsing happens entirely in your browser, so the log line you paste never leaves your device.
Privacy & Security
Everything runs in your browser; nothing is uploaded.
How to Use
Paste a logfmt line to break it into fields.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.