Source Map Stack Trace Decoder
Resolve pasted stacks with local maps; show original source positions.
Decode stack locations with local flat version-3 VLQ source maps. Indexed maps and remote source fetching are unsupported.
Using Source Map Stack Trace Decoder
Resolve pasted stacks with local maps; show original source positions.
- Start with Try worked example. Or open supported local evidence. Flat v3 .map files with file/sources/mappings. Stack frames end in file.js:line:column.
- Use Details & settings to adjust the declared inputs, thresholds or component content. Review cards retain source evidence and any supported manual decisions.
- Open Preview for the actual analysis or interactive component. Test keyboard behavior and narrow layouts before relying on generated UI.
- Use Export for task artifacts and the complete workflow ZIP. Save review retains settings/decisions and source fingerprints; file-based projects need the original sources to reopen.
Example
The tailored example for Source Map Stack Trace Decoder demonstrates Decode stack locations with local flat version-3 VLQ source maps. Indexed maps and remote source fetching are unsupported.
Questions & answers
What does Source Map Stack Trace Decoder support?
Decode stack locations with local flat version-3 VLQ source maps. Indexed maps and remote source fetching are unsupported.
What input should I use?
Flat v3 .map files with file/sources/mappings. Stack frames end in file.js:line:column.
What can I download?
Use the Export tab for task-specific artifacts, typed JSON, CSV and a workflow ZIP. Supported artifacts can include compressed files, reviewed CSS, source-position evidence, screenshot PNGs or qualified review reports.
Does this run a live website audit or deploy changes?
No. Performance diagnostics use imported evidence, explicit simulations or selected local bytes. Builders export code for you to review and integrate. No URLs are crawled, no service worker is installed and nothing is deployed. Public pages retain approved ads and optional consent-based analytics.
Related tools
A useful next step for your task.
Developer & DataHAR Network AnalyzerInspect a local HAR capture with request filters, timing waterfalls, status and domain summaries, request details, CSV exports and a minimized…
Developer & DataWeb App Manifest InspectorReview web-app names, start URLs, scopes, icons and display settings with resolved paths.
Developer & DataCSS Coverage Cleanup PlannerReview CSS coverage across multiple runs, inspect unused rule candidates, preview staged removals and export original/proposed CSS with a decision…
Developer & DataLayout Shift Evidence ExplorerReview layout-shift recordings with visual session windows, moved-element diagrams and repair notes. Inspect recent-input exclusions and export a…
Help improve this tool
Report a problem or suggest an improvement
Describe the issue without pasting private tool input. Feedback goes to our admin inbox.