Mouse Coordinate Viewer
Understand the difference between client, page and screen pointer coordinates.
Your result will appear here as soon as you add some input.
How to use it
- 1The readings appear immediately - there is nothing to submit.
- 2Resize or rotate your device and toggle the checkbox to take a new reading.
- 3Nothing here is transmitted; every value comes from your own browser.
About the Mouse Coordinate Viewer
Client coordinates are measured from the top left of the viewport. Page coordinates include the scroll offset. Screen coordinates are measured from the corner of the display.
Using the wrong one is why a tooltip or a drag handle drifts away from the pointer once the page is scrolled.
Questions people ask
Is any of this information sent anywhere?
No. Every value is read from your browser by JavaScript running in this page and displayed locally. Nothing is transmitted, logged or stored.
Is it free, and do I need an account?
Yes, it is free, and there is no account, no sign-up and no watermark on the result. The project is funded by optional donations.