The ShareX network monitor repeatedly checks a reliable internet endpoint and charts the result. It reports current and average latency, availability and connection state changes, making it useful for diagnosing intermittent internet access.
Open it from Tools -> Network monitor.
The summary shows current latency, average latency, availability percentage and disconnect count for the selected time range. Samples are kept for up to 24 hours during the running session.
The event list records transitions between connected and disconnected states rather than every successful check. To reduce brief false alarms, ShareX confirms a new failure after a one-second delay before recording a disconnection.
Connection events are also written to NetworkMonitor.log in the ShareX logs folder when a log path is available. You can copy all visible events, open the log file or clear the log from the tool.
Checks use ICMP echo requests, commonly called ping. A failed check can mean the internet connection is down, but it can also mean a firewall, VPN, router or provider is blocking ICMP. Confirm repeated failures with a web browser or another network test before concluding that the connection itself is unavailable.
The monitor tests reachability to public DNS endpoints, not Wi-Fi signal strength, local-network throughput or the status of a specific website. A successful result does not guarantee that every online service is reachable.