Online Device, Network, and Performance Tools

Check dead zones, swipes, and multi-touch after drops, repairs, or screen protector changes.

Check clicks, scroll wheel, tracking, and extra buttons to spot lag or misfires.

Test every key, modifier, and layout response when a key feels stuck, missing, or wrong.

Check for dead pixels, color issues, and uneven brightness on your display.

Estimate observed refresh rate, frame time, and frame stability.

Check visible trailing, dark smearing, and overshoot with moving browser patterns.

Check smooth gradients for visible color bands, posterization, and compression artifacts on your screen.

Press several keys at once to check rollover and anti-ghosting for games and shortcuts.

Find accidental double-click issues before replacing the mouse.

Review pixel ratio, estimated DPI, and display resolution for scaling checks.

Check camera preview, microphone activity, and speaker output in one place before meetings.

Preview the camera, framing, and browser permission before calls or recordings.

Check mic levels, mute state, and browser permission before meetings.

Check left, right, and stereo speaker or headphone output.

Play low and high tones to compare which frequencies you can still hear in your current setup.

Confirm left and right channels separately when audio sounds unbalanced.

Check buttons, sticks, triggers, vibration, and raw input on supported controllers.

Review OS, memory, CPU cores, and display details before troubleshooting.

See browser version, features, and limits that can affect device tests.

Check battery level, charging state, and time estimates when your browser exposes them.

Check browser support, Bluetooth availability, and whether the picker can return a device.

Measure download, upload, latency, and connection quality before troubleshooting Wi-Fi, streaming, or ISP issues.

Check browser latency and missed samples when games, calls, or web apps feel delayed.

Measure ping variation to spot lag spikes, unstable Wi-Fi, and choppy calls.

Test whether a public TCP port is reachable for game servers, SSH, RDP, NAS, or port forwarding.

Check whether your network reaches IPv6 services and whether dual-stack connectivity is working as expected.

Resolve DNS records to validate propagation, mail routing, and domain configuration.

Review registrar data, status, and nameservers when ownership or delegation is in question.

Check certificate expiry, issuer, SANs, and hostname match for a public HTTPS host.

Review CSP, HSTS, X-Frame-Options, Referrer-Policy, Permissions-Policy, COOP, and CORP for a public URL.

See whether your browser negotiates HTTP/2 or HTTP/3 with a site.

See whether your browser exposes local or public IP candidates through WebRTC.

See your public IP address, ISP, ASN, and basic connection details.

Measure WPM, accuracy, mistakes, and time in a browser-based typing session.

Measure clicks per second, total clicks, and click rhythm across repeatable timed sessions.

Measure spacebar hits per second, total presses, and keyboard tapping speed in a timed browser session.

Measure visual reaction speed across five timed attempts and compare average, best, and worst times.

Measure pointer precision, missed clicks, accuracy rate, and average target hit time in a browser session.

Measure digit span, short-term recall, and the highest number length you can reproduce correctly.

Measure visual sequence recall, pattern memory, and the longest tile sequence you can repeat.