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Every tool below exists because someone hit a real wall — a video Discord refuses, a passport photo the wrong size, a photo leaking your home location. Pick the problem, get the fix. Nothing is uploaded, nothing needs an account.
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Click on the page, then use this keyboard test online by pressing every key on your physical keyboard, one by one. Each key lights up green on screen the moment it registers, so any key that never lights is the faulty one — proof before you return or replace the keyboard. Free, no signup, and nothing is installed.
Either the switch/contact is faulty, or the operating system intercepts it (some media and Fn keys never reach the browser). Try those keys in another app before concluding.
Yes — the key highlights while held, and key-repeat is ignored so the log stays clean.
On-screen phone keyboards do not send hardware key events. Use a physical keyboard for this test.
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