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Touch screen test

Count the touches your screen takes at once and draw over a grid to find places it does not answer. Free, with no account or uploads.

Test your touch screen

Put several fingers down to count them, then draw over every square: squares that never light show where the screen does not answer.

So far

Touch the box with one finger, then with more.

Touching now
0
Most at once
0
Squares answered
0 of 60
  • Draw slowly over every square with one finger: a strip of squares that never lights is a place the screen does not answer.
  • The system can keep some touches for itself (a gesture with three or four fingers, or the screen's edges), and then the page never sees them.
How it works and help
Everything happens in your browser. Nothing you press is sent anywhere or kept.

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.

  1. 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.
  2. 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.
  3. Hold several at onceTo test ghosting and rollover, hold many keys together; the result keeps the most held at once.
  4. 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

How many touches can my screen take?
Put fingers down one by one; the page counts the most at once, and says how many the device reports it takes.
How do I find a part that does not answer?
Draw slowly over every square with one finger. A strip of squares that never lights is where the screen does not answer.
Why are some touches not counted?
The system can keep touches for itself, such as three- and four-finger gestures and the screen's edges, and then a page never sees them.

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 guide

Guides

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