diff --git a/types/postcss-url/index.d.ts b/types/postcss-url/index.d.ts
index 361b69f1c7..472fccc21b 100644
--- a/types/postcss-url/index.d.ts
+++ b/types/postcss-url/index.d.ts
@@ -84,6 +84,13 @@ declare namespace url {
          */
         ignoreFragmentWarning?: boolean;
 
+        /**
+         * Reduce size of inlined svg (IE9+, Android 3+)
+         *
+         * @default false
+         */
+        optimizeSvgEncode?: boolean;
+
         /**
          * Determine wether a file should be inlined.
          */
diff --git a/types/postcss-url/postcss-url-tests.ts b/types/postcss-url/postcss-url-tests.ts
index a258b49be4..70086036ab 100644
--- a/types/postcss-url/postcss-url-tests.ts
+++ b/types/postcss-url/postcss-url-tests.ts
@@ -7,7 +7,7 @@ const single: postcss.Transformer = url({ url: 'copy', assetsPath: 'img', useHas
 
 const multiple: postcss.Transformer = url([
     { filter: '**/assets/copy/*.png', url: 'copy', assetsPath: 'img', useHash: true },
-    { filter: '**/assets/inline/*.svg', url: 'inline' },
+    { filter: '**/assets/inline/*.svg', url: 'inline', optimizeSvgEncode: true },
     { filter: '**/assets/**/*.gif', url: 'rebase' },
     { filter: 'cdn/**/*', url: (asset) => `https://cdn.url/${asset.url}` },
 ]);