Test the signal before replacing the gear.
Focused browser labs turn controller, keyboard, mouse, touch and motion events into readable evidence. No account, driver installation or raw input upload.
Gamepad Tester
Check every reported button, trigger and axis in real time—without installing software or sending controller data to a server.
02Stick Drift Test
Measure the observed center offset, maximum movement and stability of both analog sticks with a repeatable browser test.
04Keyboard Tester
See presses, releases, repeats and simultaneous keys on an accessible live keyboard map.
05Keyboard Ghosting Test
Test common gaming clusters and document which simultaneous key combinations your browser actually receives.
06Mouse Tester
Check primary, secondary, middle and auxiliary buttons, wheel direction and press duration in one focused test surface.
07Double-Click Test
Find suspiciously close browser click events with a transparent threshold and a session timeline.
08Mouse Polling Rate Test
Measure the rate and stability of pointer events delivered to your browser during a guided movement sample.
10Game Input Readiness Scan
Check browser capabilities, connected input paths and the right next diagnostic in one private, exportable readiness report.
11Advanced Gamepad Analyzer
Analyze recenter stability, full-circle coverage, outer range, symmetry, triggers and two connected controllers in repeatable stages.
12Touchscreen & Gyro Lab
Map multi-touch contacts, edge reach, contact duration and browser-exposed motion data on the phone or tablet you actually play with.
13Mouse DPI Analyzer
Estimate observed mouse DPI from a measured desk distance, repeat multiple runs and quantify variation instead of trusting one pass.
14Keyboard Chatter Test
Isolate one physical key, compare down-event intervals and separate suspicious chatter from normal held-key repeat behavior.
16Console Keyboard & Mouse Support Finder
Search a conservative, source-linked compatibility table and distinguish native play, text-only, limited and unverified support.
17Gaming Input Problem Solver
Turn “my controls feel wrong” into a reproducible decision tree for controller, keyboard, mouse or touch problems.
What an online input test can tell you
A browser test can show whether a signal reaches the webpage, how it changes over time and whether a suspicious behavior repeats under controlled conditions. That is enough to narrow many practical problems: a stuck key, a controller axis that rests away from center, a mouse button that emits unusually close click events or an unstable pointer event stream.
It cannot see every layer between the physical switch and the operating system. Drivers, firmware, wireless links, calibration, power modes and browser scheduling remain part of the path. For that reason, Keymap Labs reports observations and timing distributions rather than declaring that hardware has passed a universal certification.
A useful three-pass routine
- Run the shortest relevant lab with your normal connection.
- Repeat the same action after changing one variable, such as cable, USB port or browser.
- Confirm the behavior in a game or operating-system utility before repair or replacement.
Every tool page includes its measurement boundary, interpretation and troubleshooting steps so the number is never separated from the decision it can support.