Stack Trace Formatter

Normalize and highlight stack traces for debugging

Clean and highlight Java, JavaScript, and Node stack traces — paste logs locally, no telemetry sent.

Also known as: format stack trace · stack trace viewer · node stack trace · exception formatter

100% In-Browser & Private — your data never leaves this device
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How to use the Stack Trace Formatter

  1. Paste a raw stack trace from logs or a crash report.
  2. Select Auto-detect, JavaScript/Node, or Java format.
  3. Review highlighted frames, file paths, and line numbers.

FAQ

Can this resolve source maps?
Use the Source Map Decoder tool to map minified frames back to original sources.
Are my logs uploaded?
No. Parsing runs entirely in your browser.
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