There is no way to move it, unfortunately. Only the user can control where the plugin window is placed.

Thanks 👍

You can vote for a similar idea here: Handle plugin location from figma.ui

With the recent update to the Plugin API, this is now possible.

Code.js example:

let pluginWidth = 800,

	pluginHeight = 480,

	centerX = Math.round(figma.viewport.center.x - (pluginWidth / 2)),

	centerY = Math.round(figma.viewport.center.y - (pluginHeight / 2));



figma.showUI(

	__html__,

	{

		title: 'Plugin Name',

		width: pluginWidth,

		height: pluginHeight,

		position: {

			x: centerX,

			y: centerY

		}

	}

);