`mobium zoom`

This tool on every surface: CLI · MCP · Python · JavaScript · Go · Java · .NET

Pinch to zoom, about an element or the screen

Puts two fingers on the screen and moves them apart, or together with out.

It reports that the gesture was delivered and nothing more. Neither platform exposes a zoom level in the accessibility hierarchy, so there is nothing to read back the way check reads a checkbox — confirming a zoom means asking whatever was zoomed. A WebView can answer:

mobium context WEBVIEW_...
mobium eval 'visualViewport.scale'

Pinching about the wrong point scales the right amount in the wrong place, so pass --target when that matters.

A direction pinches by a default amount. --from and --to say exactly how far the fingers travel, for a pinch sized to an element or a deliberately small one — the same split swipe makes between a direction and exact coordinates.

Usage

mobium zoom [in|out] [flags]

Flags

Flag	Type	What it does
`--from`	int	half the gap between the fingers at the start, in device pixels
`--target`	string	element to pinch about (@ref or locator)
`--to`	int	half the gap at the end; larger than --from zooms in

And the global flags.

Examples

Pinch out, to zoom in

mobium zoom in

Printed on an Android 15 emulator:

pinched in about the screen at (540, 1200), fingers 160 to 640px apart — the gesture was delivered, which is all this can confirm: neither platform reports a zoom level in the hierarchy, so ask the thing you zoomed (a WebView knows its own visualViewport.scale)

Before	After

mobium zoom in on an Android 15 emulator

More, from `mobium zoom --help`

mobium zoom
mobium zoom out
mobium zoom in --target @e2
mobium zoom --from 40 --to 90      # a small pinch, in exact pixels

The tool

zoom calls app_zoom; its arguments and what every client calls it are there.

Usage​

Flags​

Examples​

Pinch out, to zoom in​

More, from mobium zoom --help​

The tool​