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Is My Stylus Working Properly?

Draw on the canvas and see real-time pressure, tilt, and pointer type data. This test uses the Pointer Events API to detect pen input, visualize pressure-sensitive strokes, and display tilt angles — all processed locally in your browser.

This test reads PointerEvent properties for pen input: pressure (0 to 1.0 float), tiltX and tiltY angles (-90 to 90 degrees), and pointerType to confirm the device is recognized as a pen.

Professional pen tablets report 8192 pressure levels (mapped to the 0–1 float range), while basic capacitive styluses report no pressure data at all.

Draw with your stylus or pen to begin testing

Pressure0.00
Tilt X0°
Tilt Y0°
Pointer—
No Pen Detected

What Do Your Results Mean?

Result Range Meaning
Good Pressure varies smoothly from 0 to 1, tilt responds, pointerType = pen Your stylus is fully detected with pressure sensitivity and tilt tracking — all drawing and design applications will work correctly.
Warning Pressure is fixed at 0.5 or tilt shows 0 Limited pressure or missing tilt data suggests a driver issue or an older stylus model. Update your tablet driver (Wacom, Huion, XP-Pen) and test in Chrome or Edge.
Bad pointerType shows mouse or touch instead of pen The browser does not recognize your stylus as a pen device. This typically means missing tablet drivers, an unsupported capacitive stylus, or a browser that lacks Pointer Events support.

Common Issues and How to Fix Them

Stylus is detected as 'mouse' instead of 'pen'

Install or update the tablet driver (Wacom, Huion, XP-Pen). Without proper drivers, the OS treats the stylus as a mouse and loses pressure/tilt data. Chrome and Edge have the best Pointer Events support.

Pressure sensitivity is not working (always 0 or 0.5)

Check that your tablet driver is running and the pen tip is properly seated. Capacitive styluses do not support pressure — only active (EMR or AES) pens report variable pressure.

Related Tools

Touchscreen Test

Test multi-touch and touch accuracy

Mouse Test

Test mouse buttons, scroll, and movement

Click Speed Test

Measure how fast you can click

Frequently Asked Questions

How do I test if my stylus pressure sensitivity is working?

Draw on the canvas with varying pressure. Line width and color change with pressure — light strokes produce thin, light lines while heavy pressure creates thick, dark lines. The pressure meter shows the exact value (0 to 1).

What do the tilt X and tilt Y values mean?

Tilt X and Tilt Y show the angle (in degrees) between the stylus and the screen surface. Tilt X is the left-right angle (-90° to 90°) and Tilt Y is the forward-back angle (-90° to 90°). Zero means perpendicular to the screen.

Why does the test show 'mouse' instead of 'pen'?

Your device may not report pen events. Common causes: (1) missing tablet drivers, (2) browser doesn't support Pointer Events for your device, (3) using a capacitive stylus that registers as touch. Try updating drivers or using Chrome/Edge.

Is my drawing data uploaded anywhere?

No. All Pointer Event data is processed locally in JavaScript. No canvas data or stroke information leaves your browser. The page has no backend server.