pinch zoom in browser

[steady pecan]

Any site in the browser on your phone can be zoomed with two fingers. But it doesn't work with my game. What am I doing wrong? Link to my game: https://t-a.netlify.app/

[slender echo]

If your game eats the input, the gesture does not reach the browser. The gesture should be done outside the game window.
Browsers typically also have a zoom option separate from the gestures.