Stack Trace Lens
Runtime errors are noisy because framework frames hide the line you actually own. Stack Trace Lens separates app, dependency and runtime frames, highlights the first actionable location and produces a concise report for debugging or bug tickets.
stacktrace.log
triage target
TypeError: Cannot read properties of undefined (reading 'map')
OrderList · /app/src/components/OrderList.tsx:42
3
app
1
dependency
0
runtime
0
unknown
issue-report.md
app frame #1
OrderList
/app/src/components/OrderList.tsx:42:18dependency frame #2
renderWithHooks
/app/node_modules/react-dom/cjs/react-dom.development.js:16305:18app frame #3
CheckoutPage
/app/src/pages/CheckoutPage.tsx:88:11app frame #4
async getServerSideProps
/app/src/pages/CheckoutPage.tsx:124:9runtime
Browser-local execution
Inputs stay inside the current tab unless you copy, download or explicitly export.
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Session handoff
Magic Paste can pass input to a target tool through sessionStorage, never through the URL.
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User-owned state
Favorites, recent tools and workflow history are local browser data you can clear from the browser.
smart handoff graph
session handoff readySuggested next moves
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01
How to use
- 01Paste a JavaScript, Python or generic stack trace.
- 02Check the first actionable app frame and frame classification counts.
- 03Copy the generated issue report for triage or handoff.
02
FAQ
- Does it symbolicate minified production stacks?
- No. It parses visible stack text. Source-map symbolication would require source maps and is a future advanced feature.
- Is stack trace content uploaded?
- No. Parsing and classification run locally in the browser.
03
Related tools
- /web→Magic PastePaste anything and get routed to the right local tool with confidence signals.
- /web→cURL ConverterTurn copied cURL commands into fetch, Python requests and structured request JSON.
- /web→Workflow BuilderChain JSON, JWT, Base64, URL, HTML, text and hash operations in one local recipe.
- /web→JWT LabSign and verify HS256 JWTs locally, with decoded header and payload.