Why this tool is useful
Use this tester on a phone or tablet to confirm that browser orientation events respond when the device is tilted, rotated or moved.
Browser & Privacy · runs locally
Device Orientation Sensor Tester
Read permission-scoped browser orientation and motion events for a short local session and report the angles and acceleration fields actually exposed.
Ready. Your working data stays in this browser.
How it works
After any permission prompt required by the browser, the page listens briefly for deviceorientation and devicemotion events. Values stay in the tab and listeners are removed on clear or exit.
Practical example
Hold the phone upright, start the test and slowly rotate it. Alpha, beta and gamma should change if the browser and device expose the corresponding sensors.
Validation
The calculation is deterministic and explains validation errors instead of silently changing invalid input.
Privacy boundary
Input and output remain in this tab. Copy and download happen through browser APIs without a server upload.
Result passport
Every run reports its tool mode, timestamp and input/output size so transformed data can be audited.