Error Message Explainer
Paste an error message or stack trace from any language — JavaScript, Python, Java, Go, Rust, Ruby, shell, compiler output — and get back: the detected language/runtime, what happened in plain English, the most likely root cause, and the top 2 concrete fixes to try. AI-powered.
Supports errors from any language
- • JavaScript / TypeScript / Node stack traces
- • Python tracebacks (SyntaxError, TypeError, ImportError)
- • Java stack traces, Kotlin exceptions
- • Go panics, Rust error messages
- • Ruby, PHP, C#, Swift runtime errors
- • Shell errors, build failures, compiler output
Inputs to AI tools may be used to improve MarkdownMe. Data controls
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Frequently Asked Questions
- Which languages are supported?
- Any language with a readable stack trace or error message: JavaScript/TypeScript/Node, Python, Java/Kotlin, Go, Rust, Ruby, PHP, C#, Swift, shell errors, compiler output, build tool failures. The tool identifies the language from the trace format and explains accordingly.
- Will it actually fix my bug?
- It gives you the 2 most likely fixes to try. For common errors (null access, type mismatch, missing import, version conflict) the suggestions are usually on target. For domain-specific bugs or errors that need project context, treat the output as a starting hypothesis rather than a guaranteed fix.
- How much of the stack trace should I paste?
- Paste the error message plus 5-20 frames. More is not always better — the top frames are usually where the bug is. Up to 8,000 characters per request. If the trace is huge, paste just the error line and the first few frames.
- Does it explain library-specific errors?
- Yes, as long as the error message and library name are in the trace. Popular frameworks (React, Next.js, Django, Rails, Spring, Express) are recognized. Obscure internal library errors may get a generic explanation.
- Is my error message stored?
- The error is sent to MarkdownMe's AI endpoint only for analysis. You choose whether we keep it to improve the tools. See the privacy page. Don't paste traces containing secrets (API keys in URLs, connection strings with credentials).
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About Error Message Explainer
Paste any stack trace or error message. Identifies the language, explains what went wrong, names the likely cause, and gives 2 concrete fixes. Free, no login. This AI-backed tool sends your input to MarkdownMe's capped AI endpoint to generate the result. You choose whether we keep it to improve the tools. See the privacy page. No account is required. MarkdownMe provides free, fast, and reliable Markdown tools for developers, writers, and anyone who works with Markdown.