In Roblox Studio, the “guide line” usually means the green/red alignment guides that appear while moving GUIs or parts. You can’t toggle those off from the editor in most cases, but you can reduce or avoid them by changing how you move objects and by checking related Studio settings.

What it is

Those lines are typically snapping/alignment guides, not a special feature you turn on for one object. They appear when Roblox Studio helps you line up UI elements or parts precisely.

How to hide or reduce them

  • For GUI objects, try moving them with the Properties panel instead of dragging them around in the canvas.
  • For parts, disable snapping-style behaviors in Studio if you have them enabled, or reduce the movement precision that causes the guides to appear.
  • If you mean tutorial arrows or path lines made in a game, those are usually created with a Beam or similar object, and you hide them by deleting or disabling that Beam in the script or Explorer.

If you mean Roblox UI navigation

Some people call the blue/outlined UI navigation focus lines a “guide line.” In that case, the setting is usually related to UI navigation mode, not general Studio guides.

Fastest fix

  1. Open Studio settings and look for snapping, alignment, or UI navigation options.
  2. If it is a Beam/tutorial line in your game, find the Beam object and remove it or set it invisible.
  3. If it is the green/red editor guide while dragging GUI, that is normal Studio alignment help and is not always fully disableable.

If you want, I can help identify which exact “guide line” you mean and give the right steps for that one.