What is my connection?
Some browsers expose a Network Information Application Programming Interface with an estimated connection type, round-trip time, and downlink. This is a hint from your browser, not a lab-grade speed test.
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Connection type
What the Network Information API reports
Some browsers expose an estimated connection type (for example 4g or wifi), round-trip time, and downlink speed through the Network Information API. Those values are hints from the client—not a laboratory speed test against a calibrated server.
If the page says not reported, your browser simply does not expose the API or has it disabled. That is common on desktop Safari and locked-down environments.
How to read the numbers
Downlink and RTT can change as you move between Wi‑Fi and cellular, or as the browser revises its estimate. For latency to our endpoints, use the ping test tool; for the public IP path you are on, stay on the IP tools.
Use this page to understand what your browser thinks the link looks like, not as a substitute for a dedicated bandwidth test.
Get your related information
Frequently Asked Questions
What is connection type?
Some browsers report an estimated connection type (for example 4G or Wi‑Fi-like “effectiveType”) plus hints like downlink and round-trip time via the Network Information Application Programming Interface. It is a browser estimate, not a full speed test.
Why does it say not reported?
Safari and Firefox often omit navigator.connection. Chrome-family browsers are more likely to report effectiveType, downlink, and rtt.
How do I enable or disable connection reporting?
- There is usually no user toggle for navigator.connection.
- Chromium:appears when the Network Information Application Programming Interface is available.
- Firefox / Safari:typically shows “not reported.”
- Extensions or enterprise policies can block the Application Programming Interface.
- Data-saver / Lite mode can change the reported type.
What do downlink and round-trip time mean?
Downlink is an estimated bandwidth hint in megabits per second. round-trip time is an estimated latency in milliseconds. Both are browser hints, not lab measurements.
Can I improve my connection type reading?
Use a Chromium-based browser if you want this Application Programming Interface. Close bandwidth-limited modes, and test on the network you care about (Wi‑Fi vs cellular). Reload the page after switching networks.