Laptop keyboard tester
Find dead, sticking or double-typing keys on a laptop with the 75% layout most laptops have, without installing anything. Free, with no account or uploads.
Test your laptop's keys
Press each key; the result names those still to press. Keys the laptop keeps for itself, such as Fn, may never reach the page.
So far
0 of 82 keys have worked
Press every key once; held keys light up.
No key has bounced so far.
- Keys that worked
- 0
- Most held at once
- 0
- Bounced presses
- 0
- Not on this board
- None
Not pressed yet: `, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, - and 70 more.
Hold times
No key pressed yet.
Event log
What a web page cannot see
- Fn is handled inside the keyboard and never reaches a web page.
- Shortcuts your system keeps for itself, such as Alt+Tab, ⌘+Tab or Ctrl+Alt+Delete, never reach the page; some browser shortcuts, such as Ctrl+W, cannot be stopped.
- The most keys held at once is what your keyboard, its connection and your computer allow together: many keyboards report at most six letters at once over the simplest USB mode.
- How far a key travels, where it acts and how often the keyboard reports cannot be measured from a browser.
- On Windows, Print Screen is told only when it is let go.
- Full screen, in Chrome and Edge, lets the page catch more keys, such as Escape and Alt+Tab; hold Escape to leave it.
- On a phone, this tests a keyboard you connect: the on-screen keyboard has no keys to test.
A little help along the way
Follow these steps. Every option is explained underneath. Everything happens in your browser; nothing you press is sent anywhere.
- Choose your keyboardThe shape (ANSI, ISO, JIS, ABNT2, Korean or Mac) is guessed from your system; change it if it is wrong, and choose the size: full, tenkeyless, 75%, 65%, 60% or the number pad.
- Click the board and press your keysEach key lights while held and keeps a tick once it has worked. The site's own shortcuts step aside while you test. Press Escape twice to leave.
- Hold several at onceTo test ghosting and rollover, hold many keys together; the result keeps the most held at once.
- Read the resultIt says how many keys have worked, which are still to press, the most held at once, and any key that bounced.
Questions people ask
- Which size should I choose for a laptop?
- Most laptops have a 75% layout: the function row, the arrows tucked under the shift key and a short column on the right. Larger laptops may have a full board with a number pad.
- Why do some laptop keys not light up?
- Keys handled by the laptop itself, such as Fn, brightness and volume, may never reach a web page. Ordinary keys that do not light at all may be faulty.
- Can I test my laptop keyboard without installing anything?
- Yes: the tester runs in your browser and nothing you press is sent anywhere or kept.
This page is the Keyboard tester, opened for this one job; every other tool it has is one press away. Each of its settings is explained on the Keyboard tester's own page.
Read the step-by-step guideKeep going
Guides
- Laptop keyboard tester: check every key online
- How to test your keyboard online, key by key
- Keyboard ghosting test: check NKRO and 6KRO rollover
- Keyboard chatter: why a key types twice, and what helps
- How to test a Mac keyboard, ⌘ and Fn included
- Mouse test: check every button, the wheel and polling rate
- Double click test: does your mouse double click by itself?
- Mouse scroll test: check a wheel that skips or jumps