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Online Source Mapper

This tool lets you apply source maps to stacktraces.
Paste the minified stacktrace or just a url with a line number and a column number, and it will look up the original.

  • Loading {{script.url}} to find source map URL. ...
  • Loading {{script.mapUrl}}. ...
  • Successfully loaded, using map.
  • Failed to load: {{script.error}}.
    Paste the source map here:

NOTE: Requests are made from the servers, so we cannot look up source maps running on localhost or inside your private network.