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This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

Calling this API immediately after console.profile() can cause it to not work. To work around this, call it in a setTimeout with at least 5ms delay. See bug #1173588.

The profileEnd method stops recording a profile previously started with Console.profile().

You can optionally supply an argument to name the profile. Doing so enables you to stop only that profile if you have multiple profiles being recorded.

  • if Console.profileEnd() is passed a profile name, and it matches the name of a profile being recorded, then that profile is stopped.
  • if Console.profileEnd() is passed a profile name and it does not match the name of a profile being recorded, no changes will be made.
  • if Console.profileEnd() is not passed a profile name, the most recently started profile is stopped.

Note: This feature is available in Web Workers.




The name to give the profile. This parameter is optional.

Browser compatibility

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari
Basic support (Yes) (Yes) (Yes) (Yes) ? ?
Available in workers ? (Yes) 38.0 (38.0) ? ? ?
Feature Android Edge Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
Basic support ? (Yes) 10.0 (10.0) ? ? ?
Available in workers ? (Yes) 38.0 (38.0) ? ? ?

See also

Document Tags and Contributors

 Last updated by: maybe,