Log Prettifier
Format JSON logs and semi-structured log lines into cleaner readable output for debugging.
Log Prettifier makes dense logs easier to scan by formatting JSON lines, preserving raw context, and keeping important details visible.
What is Log Prettifier?
Log Prettifier makes dense logs easier to scan by formatting JSON lines, preserving raw context, and keeping important details visible.
Use it when a copied Log line contains JSON, escaped text or dense metadata that hides the error, request ID or timing detail you need.
How to use Log Prettifier?
Step 1
Try the included example input, then replace it with a redacted sample from the system you are debugging.
Step 2
Paste one or more log lines into the input area.
Step 3
Run prettify to format JSON and tidy semi-structured output.
Step 4
Copy the cleaned result for incident notes or analysis.
Example input / output
Prettify a redacted API Log, identify the request ID and then continue to Trace / Correlation ID Extractor or API Log Analyzer.
Review the result for completeness before copying it into code, a test, a ticket or another tool.
Example input
{"level":"INFO","service":"billing","requestId":"3f2f6a64-7412-4d8d-8d29-cd0e30ae9380","message":"processed"}Example output
The tool returns a readable, copy-ready result based on the selected action.Practical developer examples
Read structured Logs
Expand embedded JSON and separate metadata from the message before comparing fields across services.
Create a safe support sample
Remove Token values, customer data and internal URLs, then share only the lines needed to reproduce the failure.
Common developer use cases
Readable Logs shorten incident triage, but formatting cannot recover truncated lines or missing context. Preserve timestamps, severity and correlation identifiers when reducing a sample.
Common issues
FAQ
Does Log Prettifier send data to a server?
The interactive transformation is handled in the browser in this frontend build. Analytics and advertising scripts may still load separately for site measurement or ads readiness, so avoid pasting active secrets or regulated personal data.
What input works best in log prettifier?
Paste raw log lines directly into the input area or use the example button for a quick starting point.
Can I share Log Prettifier output with teammates?
Yes, but review the result first and redact tokens, private keys, customer data, internal URLs, account IDs, and other sensitive values before sending it in a ticket, chat, or pull request.