Can I customize which frames are collapsed?

Yes. You can define custom patterns for framework and library paths that should be collapsed. By default, common paths like node_modules, vendor, and standard library frames are hidden.

Does this support minified JavaScript traces?

The tool formats the stack trace as provided. For minified traces, you would need to apply a source map first. The formatted output will show the minified file names and line numbers.

Stack Trace Formatter in Your Browser

Clean up messy stack traces without leaving your browser. Paste an error trace from any language and get a formatted, readable output that highlights your application code and collapses framework internals.

Open Stacktrace Parser

How to Format a Stack Trace

Paste the raw stack trace from your console, logs or error tracker
The tool auto-detects the programming language
Application code frames are highlighted in bold
Framework and library frames are collapsed by default
Click any frame to expand details or copy the formatted output

Common Use Cases

Cleaning up stack traces before posting to GitHub issues
Formatting error output for team Slack channels
Analyzing crashes from production error monitoring dashboards
Comparing stack traces from different environments

Frequently Asked Questions

Can I customize which frames are collapsed?: Yes. You can define custom patterns for framework and library paths that should be collapsed. By default, common paths like node_modules, vendor, and standard library frames are hidden.
Does this support minified JavaScript traces?: The tool formats the stack trace as provided. For minified traces, you would need to apply a source map first. The formatted output will show the minified file names and line numbers.