diff --git a/src/core/__tests__/cache-storage.ts b/src/core/__tests__/cache-storage.ts
index 7ea4dce..7844fa0 100644
--- a/src/core/__tests__/cache-storage.ts
+++ b/src/core/__tests__/cache-storage.ts
@@ -270,4 +270,14 @@ describe('cache-storage', () => {
             fail('Expected result to timeout');
         } catch (e) {}
     });
+
+    it('addImage should add an inlined image', async () => {
+        const {cache} = createMockContext('http://example.com', {imageTimeout: 10});
+        const inlinedImg = `data:image/gif;base64,R0lGODlhEAAOALMAAOazToeHh0tLS/7LZv/0jvb29t/f3//Ub/
+/ge8WSLf/rhf/3kdbW1mxsbP//mf///yH5BAAAAAAALAAAAAAQAA4AAARe8L1Ekyky67QZ1hLnjM5UUde0ECwLJoExKcpp
+V0aCcGCmTIHEIUEqjgaORCMxIC6e0CcguWw6aFjsVMkkIr7g77ZKPJjPZqIyd7sJAgVGoEGv2xsBxqNgYPj/gAwXEQA7`;
+        cache.addImage(inlinedImg);
+
+        await cache.match(inlinedImg);
+    });
 });
diff --git a/src/core/cache-storage.ts b/src/core/cache-storage.ts
index 2be98ed..d935330 100644
--- a/src/core/cache-storage.ts
+++ b/src/core/cache-storage.ts
@@ -98,7 +98,9 @@ export class Cache {
                 img.crossOrigin = 'anonymous';
             }
             img.src = src;
-            if (img.complete === true) {
+            if (/^data:/.test(src)) {
+                resolve(img);
+            } else if (img.complete === true) {
                 // Inline XML images may fail to parse, throwing an Error later on
                 setTimeout(() => resolve(img), 500);
             }