diff --git a/erpnext/selling/page/point_of_sale/pos_controller.js b/erpnext/selling/page/point_of_sale/pos_controller.js
index 8f02c8d0fb2..9da530081e7 100644
--- a/erpnext/selling/page/point_of_sale/pos_controller.js
+++ b/erpnext/selling/page/point_of_sale/pos_controller.js
@@ -165,6 +165,7 @@ erpnext.PointOfSale.Controller = class {
 		this.prepare_dom();
 		this.prepare_components();
 		this.prepare_menu();
+		this.prepare_fullscreen_btn();
 		this.make_new_invoice();
 	}
 
@@ -200,6 +201,39 @@ erpnext.PointOfSale.Controller = class {
 		this.page.add_menu_item(__("Close the POS"), this.close_pos.bind(this), false, "Shift+Ctrl+C");
 	}
 
+	prepare_fullscreen_btn() {
+		this.page.page_actions.find(".custom-actions").empty();
+
+		this.page.add_button(__("Full Screen"), null, { btn_class: "btn-default fullscreen-btn" });
+
+		this.bind_fullscreen_events();
+	}
+
+	bind_fullscreen_events() {
+		this.$fullscreen_btn = this.page.page_actions.find(".fullscreen-btn");
+
+		this.$fullscreen_btn.on("click", function () {
+			if (!document.fullscreenElement) {
+				document.documentElement.requestFullscreen();
+			} else if (document.exitFullscreen) {
+				document.exitFullscreen();
+			}
+		});
+
+		$(document).on("fullscreenchange", this.handle_fullscreen_change_event.bind(this));
+	}
+
+	handle_fullscreen_change_event() {
+		let enable_fullscreen_label = __("Full Screen");
+		let exit_fullscreen_label = __("Exit Full Screen");
+
+		if (document.fullscreenElement) {
+			this.$fullscreen_btn[0].innerText = exit_fullscreen_label;
+		} else {
+			this.$fullscreen_btn[0].innerText = enable_fullscreen_label;
+		}
+	}
+
 	open_form_view() {
 		frappe.model.sync(this.frm.doc);
 		frappe.set_route("Form", this.frm.doc.doctype, this.frm.doc.name);