diff --git a/docs/options.md b/docs/options.md
index 68ce94d..bc954ad 100644
--- a/docs/options.md
+++ b/docs/options.md
@@ -22,6 +22,7 @@ Properties are applicable exclusively to models that support each respective fun
 | color | boolean | false |Print in color.|
 | mono | boolean | false |Print in monochrome.|
 | continue | boolean | false |Front margin not output.|
+| fitPage | boolean | false |Specify whether to adjust the size and position of objects in the template in accordance with layout changes resulting from media changes. If set to true, adjustments will be made; otherwise, if set to false or undefined, no adjustments will be applied..|
 
 ## Supported Export Extensions
 | **Description** | **Extension** |
diff --git a/src/BrotherSdk.ts b/src/BrotherSdk.ts
index 90d2217..c577ddf 100644
--- a/src/BrotherSdk.ts
+++ b/src/BrotherSdk.ts
@@ -8,6 +8,7 @@ import {
     Data,
     PrintConfig,
     ImageOptions,
+    Constructor,
 } from "./types";
 import {
     openTemplate,
@@ -20,6 +21,7 @@ import {
     printOut,
     endPrint,
     exportTemplate,
+    setPrinter,
 } from "./adapter";
 
 export default class BrotherSdk {
@@ -27,7 +29,9 @@ export default class BrotherSdk {
 
     templatePath: string;
 
-    exportDir: string;
+    printer: undefined | string;
+
+    exportDir: undefined | string;
 
     // One mutation observer, regardless of instances.
     static #observer: MutationObserver | undefined;
@@ -64,16 +68,14 @@ export default class BrotherSdk {
      * The path for exporting generated templates.
      * - Win path: "C:\\\path\\\to\\\your\\\"
      * - Unix path: "/home/templates/"
+     * @param {String} [object.printer = undefined]
+     * The name of the printer used for printing. Specify the printer name, not the path.
+     * - Example: "Brother QL-820NWB"
      */
-    constructor({
-        templatePath,
-        exportDir,
-    }: {
-        templatePath: string;
-        exportDir?: string;
-    }) {
+    constructor({ templatePath, exportDir, printer }: Constructor) {
         this.templatePath = templatePath;
-        this.exportDir = exportDir || "";
+        this.exportDir = exportDir;
+        this.printer = printer;
         this.#ready = false;
         this.#initialize();
     }
@@ -86,12 +88,12 @@ export default class BrotherSdk {
             return;
         }
 
-        if (targetNode.classList.contains(className)) {
-            this.#ready = true;
+        if (BrotherSdk.#observer) {
             return;
         }
 
-        if (BrotherSdk.#observer) {
+        if (targetNode.classList.contains(className)) {
+            this.#ready = true;
             return;
         }
 
@@ -180,17 +182,27 @@ export default class BrotherSdk {
      * @param {boolean} [config.continue = false]
      * Combines with printing for the following DoPrint( ) so that it is a single print job.
      * As a result, when the next DoPrints are called up, the front margins are not output.
+     * @param {boolean} [config.fitPage = false]
+     * Specify whether to adjust the size and position of objects in the template in accordance
+     * with layout changes resulting from media changes. If set to true, adjustments
+     * will be made; otherwise, if set to false or undefined, no adjustments will be applied.
      */
     async print(data: Data, config?: PrintConfig): Promise<boolean> {
-        const { copies = 1, printName = "BPAC-Document", ...rest } = config || {};
-
-        const bitmaskNumber = getStartPrintOptions(rest);
+        const {
+            copies = 1,
+            printName = "BPAC-Document",
+            fitPage = false,
+            ...opts
+        } = config || {};
 
         await this.#isPrintReady();
 
+        const bitMask = getStartPrintOptions(opts);
+
         await openTemplate(this.templatePath);
+        await setPrinter(this.printer, fitPage);
         await populateObjectsInTemplate(data);
-        await startPrint(printName, bitmaskNumber);
+        await startPrint(printName, bitMask);
         await printOut(copies);
         await endPrint();
         await closeTemplate();
diff --git a/src/adapter.ts b/src/adapter.ts
index 2555222..b03d3bd 100644
--- a/src/adapter.ts
+++ b/src/adapter.ts
@@ -1,22 +1,34 @@
 import * as bpac from "./vendor/bpac-v3.4";
 import { Data, ObjectTypes } from "./types";
 
-const doc = bpac.IDocument;
+const Doc = bpac.IDocument;
 
-export const openTemplate = async (path: string): Promise<boolean> => {
-    const isOpen:boolean = await doc.Open(path);
+export const openTemplate = async (path: string): Promise<void> => {
+    const isOpen:boolean = await Doc.Open(path);
 
     if (!isOpen) {
+        throw new Error("Failed to open the template file.");
+    }
+};
+
+export const setPrinter = async (printer: string | undefined, fitPage: boolean): Promise<void> => {
+    if (printer === undefined && fitPage === false) return;
+
+    if (printer === undefined && fitPage === true) {
+        throw new Error("To use fitPage, you must manually set the printer name.");
+    }
+
+    const isPrinter:boolean = await Doc.SetPrinter(printer, fitPage);
+
+    if (!isPrinter) {
         throw new Error(
-            "Failed to open template file.",
+            `Failed to set the printer. The specified printer "${printer}" may not exist or is not accessible.`,
         );
     }
-
-    return true;
 };
 
 export const closeTemplate = async (): Promise<boolean> => {
-    const isClosed = await doc.Close();
+    const isClosed = await Doc.Close();
 
     if (!isClosed) {
         throw new Error("Failed to close template file.");
@@ -26,7 +38,7 @@ export const closeTemplate = async (): Promise<boolean> => {
 };
 
 export const startPrint = async (printName:string, bitmask:number): Promise<boolean> => {
-    const isStarted:boolean = await doc.StartPrint(printName, bitmask);
+    const isStarted:boolean = await Doc.StartPrint(printName, bitmask);
 
     if (!isStarted) {
         await closeTemplate();
@@ -37,18 +49,18 @@ export const startPrint = async (printName:string, bitmask:number): Promise<bool
 };
 
 export const printOut = async (copies: number): Promise<boolean> => {
-    const isPrinted:boolean = await doc.PrintOut(copies, 0);
+    const isPrinted:boolean = await Doc.PrintOut(copies, 0);
 
     if (!isPrinted) {
         await closeTemplate();
-        throw new Error("Failed to print out.");
+        throw new Error("Failed to print, please verify the printer name is correct for the template.");
     }
 
     return true;
 };
 
 export const endPrint = async () => {
-    const hasEnded:boolean = await doc.EndPrint();
+    const hasEnded:boolean = await Doc.EndPrint();
 
     if (!hasEnded) {
         await closeTemplate();
@@ -59,23 +71,23 @@ export const endPrint = async () => {
 };
 
 export const imageData = async (width:number, height:number): Promise<string> => {
-    const data = await doc.GetImageData(4, width, height);
+    const data = await Doc.GetImageData(4, width, height);
     return data;
 };
 
 export const getPrinterName = async (): Promise<string> => {
-    const printerName: string = await doc.GetPrinterName();
+    const printerName: string = await Doc.GetPrinterName();
     return printerName;
 };
 
 export const getPrinters = async (): Promise<string[]> => {
-    const obj = await doc.GetPrinter();
+    const obj = await Doc.GetPrinter();
     const printers = await obj.GetInstalledPrinters();
     return printers;
 };
 
 export const exportTemplate = async (type:number, dest:string, res:number): Promise<boolean> => {
-    const isExported:boolean = await doc.Export(type, dest, res);
+    const isExported:boolean = await Doc.Export(type, dest, res);
 
     if (!isExported) {
         await closeTemplate();
@@ -91,7 +103,7 @@ export const populateObjectsInTemplate = async (data: Data): Promise<boolean> =>
     // eslint-disable-next-line no-restricted-syntax
     for (const prop of keys) {
         const value = data[prop];
-        const obj = await doc.GetObject(prop);
+        const obj = await Doc.GetObject(prop);
 
         if (!obj) {
             await closeTemplate();
@@ -113,7 +125,7 @@ export const populateObjectsInTemplate = async (data: Data): Promise<boolean> =>
                 await obj.SetData(0, value);
                 break;
             case ObjectTypes.Barcode:
-                await doc.SetBarcodeData(0, value);
+                await Doc.SetBarcodeData(0, value);
                 break;
             case ObjectTypes.ClipArt:
                 await obj.SetData(0, value, 0);
diff --git a/src/helpers.ts b/src/helpers.ts
index 1827301..bc789bf 100644
--- a/src/helpers.ts
+++ b/src/helpers.ts
@@ -19,7 +19,10 @@ const optionBitmaskMap: { [key in keyof StartPrintOptions]: number } = {
     continue: 0x40000000,
 };
 
-export const getAbsolutePath = (basePath: string, filePathOrFileName: string): string => {
+export const getAbsolutePath = (
+    basePath: string | undefined,
+    filePathOrFileName: string,
+): string => {
     // eslint-disable-next-line no-useless-escape
     const isPath = /^(.*[\\\/])([^\\\/]+)\.([^.]+)$/;
 
diff --git a/src/types.ts b/src/types.ts
index a7b56b8..9e609b5 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -1,4 +1,12 @@
-export type Data = Record<string, string | Date>;
+export type Data = {
+    [key:string] : string | Date
+};
+
+export type Constructor = {
+    templatePath: string;
+    exportDir?: string;
+    printer?: string;
+};
 
 export type PrintOptions = {
     copies?: number;
@@ -24,7 +32,11 @@ export type StartPrintOptions = {
     continue?: boolean,
 };
 
-export type PrintConfig = PrintOptions & StartPrintOptions;
+export type FitPage = {
+    fitPage: boolean;
+};
+
+export type PrintConfig = PrintOptions & StartPrintOptions & FitPage;
 
 export type ImageOptions = {
     width?: number;
diff --git a/tests/browser/playground.js b/tests/browser/playground.js
index 0007042..47f876d 100644
--- a/tests/browser/playground.js
+++ b/tests/browser/playground.js
@@ -11,16 +11,18 @@ const tag = new BrotherSdk({
     exportDir: "C:/Users/YMH/Desktop/Exported Labels/",
 });
 
+
 const data = {
     title: "Test Label",
     date: new Date("1/1/23"),
     barcode: "074608352052",
     image: "C:/Users/YMH/Desktop/Storage Drive Files/Logos/Monogram/my-logo.png",
 };
-/* {autoCut: true, mirroring: true, specialTape:true} */
+
 const printTag = async () => {
     try {
-        const complete = await tag.print(data, { highResolution: true, autoCut:true });
+        //tag.printer = "Brother QL-820NWB";
+        const complete = await tag.print(data, { highSpeed: true, autoCut:true, fitPage: false });
         console.log({ complete });
     } catch (error) {
         console.log({ error });
diff --git a/tests/helpers.spec.ts b/tests/helpers.spec.ts
index efd5772..9464fd6 100644
--- a/tests/helpers.spec.ts
+++ b/tests/helpers.spec.ts
@@ -53,6 +53,10 @@ describe("Helpers", () => {
             expect(() => getAbsolutePath()).to.throw(Error);
         });
 
+        it("Should throw an error when only one arg is passed.", () => {
+            expect(() => getAbsolutePath(undefined, dir.fileName)).to.throw(Error);
+        });
+
         it("Should combine path and filename (backslashes).", () => {
             const result = getAbsolutePath(dir.winBase, dir.fileName);
             expect(result).to.have.string("C:\\Templates\\label.lbx");