diff --git a/packages/utils/src/loader/custom.ts b/packages/utils/src/loader/custom.ts
index 37fb304..6e7c9c7 100644
--- a/packages/utils/src/loader/custom.ts
+++ b/packages/utils/src/loader/custom.ts
@@ -42,6 +42,7 @@ export async function getCustomIcon(
 			icon,
 			additionalProps,
 			options?.addXmlNs === true,
+			options?.scale,
 			undefined,
 			iconCustomizer,
 		);
diff --git a/packages/utils/src/loader/modern.ts b/packages/utils/src/loader/modern.ts
index 46f7425..3965653 100644
--- a/packages/utils/src/loader/modern.ts
+++ b/packages/utils/src/loader/modern.ts
@@ -39,6 +39,7 @@ export async function searchForIcon(
 				id,
 				additionalProps,
 				options?.addXmlNs === true,
+				options?.scale,
 				() => attributes,
 				iconCustomizer
 			);
diff --git a/packages/utils/src/loader/utils.ts b/packages/utils/src/loader/utils.ts
index 4d0bb10..0978c3f 100644
--- a/packages/utils/src/loader/utils.ts
+++ b/packages/utils/src/loader/utils.ts
@@ -1,18 +1,23 @@
 import type { Awaitable } from '@antfu/utils';
 import type { IconCustomizer } from './types';
 
-export const isNode = typeof process < 'u' && typeof process.stdout < 'u'
-
 export async function mergeIconProps(
 	svg: string,
 	collection: string,
 	icon: string,
 	additionalProps: Record<string, string | undefined>,
 	addXmlNs: boolean,
+	scale?: number,
 	propsProvider?: () => Awaitable<Record<string, string>>,
 	iconCustomizer?: IconCustomizer,
 ): Promise<string> {
 	const props: Record<string, string> = (await propsProvider?.()) ?? {};
+	if (!svg.includes(" width=") && !svg.includes(" height=") && typeof scale === 'number') {
+		if ((typeof props.width === 'undefined' || props.width === null) && (typeof props.height === 'undefined' || props.height === null)) {
+			props.width = `${scale}em`;
+			props.height = `${scale}em`;
+		}
+	}
 	await iconCustomizer?.(collection, icon, props);
 	Object.keys(additionalProps).forEach((p) => {
 		const v = additionalProps[p];