diff --git a/types/qr-image/index.d.ts b/types/qr-image/index.d.ts
index ca480027f5c1f5..4c82901c2afe88 100644
--- a/types/qr-image/index.d.ts
+++ b/types/qr-image/index.d.ts
@@ -8,6 +8,8 @@ export type ec_level = "L" | "M" | "Q" | "H";
 /** @default 'png' */
 export type image_type = "png" | "svg" | "pdf" | "eps";
 
+export type encodable = string | number | Buffer | ReadonlyArray<number>;
+
 export interface Bitmap {
     /**
      * width (and height) of resulting image in pixels
@@ -55,13 +57,13 @@ export interface Options {
     customize?: ((bitmap: Bitmap) => void) | undefined;
 }
 
-export function image(text: string, level?: ec_level): NodeJS.ReadableStream;
-export function image(text: string, options?: Options): NodeJS.ReadableStream;
+export function image(data: encodable, level?: ec_level): NodeJS.ReadableStream;
+export function image(data: encodable, options?: Options): NodeJS.ReadableStream;
 
-export function imageSync(text: string, level?: ec_level): Buffer;
-export function imageSync(text: string, options?: Options): string | Buffer;
+export function imageSync(data: encodable, level?: ec_level): Buffer;
+export function imageSync(data: encodable, options?: Options): string | Buffer;
 
-export function svgObject(text: string, level?: ec_level): SvgObject;
-export function svgObject(text: string, options?: Options): SvgObject;
+export function svgObject(data: encodable, level?: ec_level): SvgObject;
+export function svgObject(data: encodable, options?: Options): SvgObject;
 
-export function matrix(text: string, level?: ec_level): (0 | 1)[][];
+export function matrix(data: encodable, level?: ec_level): any[][];
diff --git a/types/qr-image/qr-image-tests.ts b/types/qr-image/qr-image-tests.ts
index bfbb4df65065a1..36eb4642dd1f96 100644
--- a/types/qr-image/qr-image-tests.ts
+++ b/types/qr-image/qr-image-tests.ts
@@ -5,6 +5,8 @@ const qr_svg = qr.image("I love QR!", { type: "svg" });
 qr_svg.pipe(fs.createWriteStream("i_love_qr.svg"));
 
 const svg_string = qr.imageSync("I love QR!", { type: "svg" });
+const svg_string_from_num = qr.imageSync(1234, { type: "svg" });
+const svg_string_from_arr = qr.imageSync([1, 128], { type: "svg" });
 
 // customize
 function coord2offset(x: number, y: number, size: number) {