A browser touch test is not a stylus pressure test

You press harder with your stylus, but the line stays the same width. Or a browser touch test shows the pen touching the screen, and you want to know whether pressure sensitivity works. These are two different checks.

The Touch Screen Test checks touch contacts, multi-touch points and dead zones. It does not display or measure stylus pressure. Here is how to use it to check basic screen input, and how to test pressure in the right place.

Check touch input in the browser

1. Open the Touch Screen Test on the device you want to check. Use the device's touchscreen, not a remote desktop or a different computer.
2. Touch several areas with one finger, including the center, edges and corners. Look for contact points that appear where you touch, and note any area that does not respond.
3. If the screen supports multi-touch, place two or more fingers on it and move them apart or together. Check whether the test registers the contacts separately.
4. Try the stylus lightly in several places. If the test registers its contact, that confirms the browser and device recognize some pen input at those locations. It does not tell you how hard you pressed.
5. Compare the stylus with your finger in the same area. If your finger registers but the pen does not, test the pen in a drawing app that supports that stylus before deciding the screen is faulty.

What the result means

Your finger touches register across the screen

The basic touch layer is responding in the areas you checked. This does not test every part of the digitizer, nor does it test a pen's pressure sensor. A small damaged area can still be missed if you do not touch it directly.

The stylus registers as a contact

The device and browser are detecting the pen as an input at that point. The test reports touch behavior, not pressure values, so a successful contact is not evidence that pressure sensitivity works. It also does not confirm that a drawing app has selected the right pen or brush settings.

The test misses a spot with a finger

This may indicate a touchscreen dead zone, where part of the display does not detect touch. Remove a screen protector if it is damaged or poorly fitted, clean the screen, and repeat the check. For help documenting a fault, see How to document touchscreen dead zones for repair.

Your finger registers but your stylus does not

That does not automatically mean the screen is broken. Some pens use a special active digitizer, some act like a finger, and some are compatible only with specific devices. A browser might also handle pen input differently from a drawing app. For more checks, see Touchscreen works with finger but not stylus.

Pressure is missing or every line looks the same

The browser test cannot diagnose this result. Check pressure in an app known to support your specific pen, using a brush that changes size or opacity with pressure. If that app has a pressure test area, make a stroke from a light touch to a firm press and look for a gradual change.

How to test stylus pressure

1. Confirm that the pen supports pressure. A basic capacitive stylus imitates a fingertip and usually has no pressure sensor. Check the pen and device specifications for pressure sensitivity and compatibility.
2. Use a pressure-aware drawing app. Choose a brush that responds to pressure, and check that pressure is assigned to size or opacity. A fixed-size brush can make a working pen look pressure-insensitive.
3. Check the device and app settings. On Windows 11, look under Settings › Bluetooth & devices › Pen & Windows Ink for available pen options, then check the drawing app's input or brush settings. On macOS with a graphics tablet, open the manufacturer's tablet settings app and the drawing app's pressure settings. macOS does not have one universal setting that enables pressure for every stylus.
4. Check pairing or connection when needed. On an iPad, look under Settings › Apple Pencil on a compatible model. On Android, open Settings and search for stylus or pen, since the menu depends on the device. Some active pens do not need Bluetooth for pressure input, so pairing alone does not prove pressure works.
5. Test with the correct pen and device combination. If possible, try the pen on another app or compatible device, and try a known-compatible pen on yours. This helps separate an app setting from a pen or screen problem.

When it may be a hardware problem

If the stylus has pressure support, is compatible with the device, and still produces no pressure variation in more than one pressure-aware app, check for a driver or firmware update from the device or pen maker. On a graphics tablet, reconnect it and check its manufacturer utility. If the pressure response still fails, contact the manufacturer or a repair shop, especially if the device is under warranty.

Do not press unusually hard to force a result. A pressure test should show a response across a normal range of light to firm strokes, and excessive force can damage the tip or screen.

Why the two tests are different

A touchscreen test asks where contact happened and whether multiple contacts can be tracked. A pressure test asks how much force the pen reports, and whether the app uses that value. Some browser and device combinations can expose pen-related data, but the Touch Screen Test does not show or grade pressure values.

Use the browser test to check basic touch response, then use a compatible drawing app to check pressure. A working touch point and a pressure-sensitive stroke are separate results.