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Questions, a measurement issue, or feedback about a guide? Here is how to reach the site owner.
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When reporting a problem, mention your browser, whether you used WiFi or Ethernet, the approximate time, and the stage where the test stopped. Please do not send passwords, private IP addresses, or account information.
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You can clear local history directly in the History tab. Delete a shared report using its deletion control in the same browser. Reports also expire automatically. For other questions, use the owner’s published email below when available.
Editorial feedback
If a guide is unclear or out of date, include the article title and the detail that needs attention.