Log Tools
Format JavaScript, Java, and Python stack traces into a structured summary.
Turn a multiline exception trace into a compact list of source frames.
Useful for scanning exceptions and locating relevant source files and line numbers.
Format and analyze JavaScript, Node.js, Java, and Python stack traces into a clean and readable structure.
Formatted stack trace will appear here...
Paste a JavaScript, Node.js, Java, or Python stack trace.
The formatter detects exception information and stack frames.
File names, functions, line numbers, and columns are extracted.
The stack trace is converted into a clean readable structure.
| Language | Example |
|---|---|
| JavaScript / Node.js | at getUser (user.js:42:15) |
| Java | at com.example.App.main(App.java:42) |
| Python | File "app.py", line 25, in get_user |
A stack trace shows the sequence of function calls that occurred before an error or exception happened.
No. The formatter only analyzes the text you paste into the browser. It does not execute the code represented by the stack trace.
Yes. Common Node.js and JavaScript stack frame formats such as file.js:line:column are supported.
Yes. Python File, line, and function information can be extracted from standard traceback output.
The formatter recognizes common JavaScript/Node.js, Java, and Python frame formats.