SevenPens Tablet Tester
Overview
With my Tablet Tester browser-based tool you can test out the basic features of your tablet. This is useful for troubleshooting.
Try out the tool now
Go here to launch the tool: SevenPens Tablet Tester. Then start drawing in the blue box.

Safety and privacy
This tool:
Does not collect any data about you, your computer, etc.
Does not uses no cookies.
Does not track your behavior.
Does not record what you draw.
Features
Inputs
Draw with pen
Draw with mouse
Formatting
Control stroke size by pressure or tilt or use a fixed size
Control stroke color by pressure or tilt or use a fixed color
Control the minimum size of a stroke - useful when drawing with very light pressyre
Live Pointer information
Position, Tilt, Pressure, Barrel Rotation
Calculated information: Velocty & Direction
Button status
Utilities
Erase canvas when starting a new stroke
Show stroke stats such as pointer events/sec
Processing
Position smoothing
Pressure smoothing
Tilt smoothing
Pressure quantization
Pressure curve
Multiple ways to erase the canvas:
Press Clear button
Press BACKSPACE key
Press DELETE key
Press Save button to download canvas as PNG file
OS & Browser compatibility
Windows
Pen API:
Needs Windows Ink to be enabled in the tablet driver.
If you tablet driver is using only WinTab, no pressure is supported.
Chrome - WORKS
Firefox - WORKS
MacOS
Safari - yet to be tested
Chrome - WORKS
Linux
Chrome - WORKS
Firefox
Wayland - WORKS
X11 -
use
env MOZ_USE_XINPUT2=1 firefoxto make it workmore info on what's going on with the X11 issue:
iPadOS
Safari - WORKS
Android
Chrome - WORKS
Open source
The entire source code is on the github repo (https://github.com/TheSevenPens/HtmlTabletTester). I encourage you to look through it and fork and modify it for your needs.
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