Keyboard layout test
Choose the character layout you intend to use, then press plain keys. Compare expected and received characters side by side.
What the test received
Press and release a key to begin.
Latest characters received
Press a key to see its expected and received values here.
| Position | Expected | Received | Latest result |
|---|
Keys type the wrong characters
Matched or different compares an unmodified character with the chosen expected layout. Observed only means no plain-character comparison was made. The ⋯ label marks a variable or dead-key position.
Choose the exact intended layout
Select the language and variant you intend, such as US versus UK English. Physical shape controls the drawn positions; the OS menu changes modifier labels, not your input language.
Check the active system input source
Use the Windows language/input menu or Mac Input menu to select that same variant. The letters printed on the keyboard need not match the active input source.
Try plain characters first
Release Shift, AltGr or Option and turn off Caps Lock if that is not intended. Dead keys and input methods can produce text through composition; compare the finished character in a text editor.
Distinguish characters from positions
If code stays stable but the character changes, investigate the input layout or remap. If the position itself is absent, use the keyboard tester and compare another app.
Retest
Reset the board and retry the same plain keys after selecting the intended system layout. Changing this page’s expected layout does not change system settings.
If it persists
If only characters differ, resolve the input source or mapping first. Manufacturer support becomes relevant when the same physical keys also fail in other apps or on another computer.