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A NetLog dump is a log file of the browser's network-level events and state. You may be asked to provide this log when experiencing page load or performance problems.
Note: if you want to take a netlog for Android WebView, read this guide instead.
To create a NetLog dump, open a new tab and navigate to:
You can then follow the instructions on that page.
Step-by-step guide
PRIVACY: When attaching log files to bug reports, note that Chrome bug reports are publicly visible by default. If you would prefer it be only visible to Google employees, mention this on the bug and wait for a Google engineer to restrict visibility of the bug before you attach the file.
Advanced: Byte-level captures
By default, NetLog dumps do not include all of the raw bytes (encrypted or otherwise) that were transmitted over the network.
To include this data in the log file, select the Include raw bytes option at the bottom of the chrome://net-export/ page:
PRIVACY: Captures with this level of detail may include personal information and should generally be emailed rather than posted on public forums or public bugs.
Advanced: Logging on startup
If the problem that you want to log happens very early and you cannot start chrome://net-export in time, you can add a command line argument to Chrome that will start logging to a file from startup:
--log-net-log=C:\some_path\some_file_name.json
If a granularity for capture other than the default of “Strip private information” is needed, one of the following flags can be used:
For info about adding command line options, see command-line-flags.
Advanced: Viewing the NetLog dump file
The log file can be loaded using the netlog_viewer.