If you're looking to Download Frame Hanger Pro on your Chromebook laptop Then read the following guideline.

Frame Hanger Pro is an experimental tool aimed at helping users in measuring, previewing and hanging large scale framed photos, fine art, or paintings. Use hand tracking to measure the 4 corners of your rectangular frame, then add reference points such as locations of hooks, wires, or mounting brackets. Once that's done, you can preview the frame on your walls and see a template guide that shows your reference points.