diff --git a/android/src/main/java/com/jimmydaddy/imagemarker/MarkerImageLoader.kt b/android/src/main/java/com/jimmydaddy/imagemarker/MarkerImageLoader.kt
index e27638de..1ebacdd4 100644
--- a/android/src/main/java/com/jimmydaddy/imagemarker/MarkerImageLoader.kt
+++ b/android/src/main/java/com/jimmydaddy/imagemarker/MarkerImageLoader.kt
@@ -20,6 +20,7 @@ import coil.decode.SvgDecoder
 import coil.request.CachePolicy
 import coil.request.ImageRequest
 import coil.request.SuccessResult
+import coil.size.Precision
 import coil.size.Scale
 import com.facebook.react.bridge.ReactApplicationContext
 import com.jimmydaddy.imagemarker.base.Constants.IMAGE_MARKER_TAG
@@ -144,7 +145,8 @@ class MarkerImageLoader(private val context: ReactApplicationContext, private va
         // The returned bitmap is explicitly recycled after rendering. Keep it out of Coil's
         // memory cache so that recycling cannot invalidate a shared cached drawable.
         .memoryCachePolicy(CachePolicy.DISABLED)
-      val requestedSize = if (img.src.width > 0 && img.src.height > 0) {
+      val hasSourceSize = img.src.width > 0 && img.src.height > 0
+      val requestedSize = if (hasSourceSize) {
         ImageSizeLimiter.fit(img.src.width, img.src.height, maxSize)
       } else {
         ImagePixelSize(maxSize, maxSize)
@@ -152,7 +154,12 @@ class MarkerImageLoader(private val context: ReactApplicationContext, private va
       request = request
         .size(requestedSize.width, requestedSize.height)
         .scale(Scale.FIT)
-      if (img.src.width > 0 && img.src.height > 0) {
+      if (!hasSourceSize) {
+        // Without a source size, maxSize x maxSize is only an upper bound. Coil defaults to exact
+        // precision for requests without a view, which would scale smaller images up to fill it.
+        request = request.precision(Precision.INEXACT)
+      }
+      if (hasSourceSize) {
         Log.d(IMAGE_MARKER_TAG, "src.width: " + img.src.width + " src.height: " + img.src.height)
       }
 
diff --git a/example/android/app/src/androidTest/java/com/imagemarkerexample/MarkerImageLoaderTest.kt b/example/android/app/src/androidTest/java/com/imagemarkerexample/MarkerImageLoaderTest.kt
index 6de7faa6..b720ef2f 100644
--- a/example/android/app/src/androidTest/java/com/imagemarkerexample/MarkerImageLoaderTest.kt
+++ b/example/android/app/src/androidTest/java/com/imagemarkerexample/MarkerImageLoaderTest.kt
@@ -43,6 +43,18 @@ class MarkerImageLoaderTest {
     bitmap.recycle()
   }
 
+  @Test
+  fun doesNotUpscaleCoilSourceWithoutExplicitSize() = runBlocking {
+    val uri = "content://com.imagemarkerexample.test.imageprovider/image"
+
+    // maxSize is an upper bound: a 3x2 source must not be enlarged to fit 2048x2048.
+    val bitmap = load(uri)
+
+    assertEquals(3, bitmap.width)
+    assertEquals(2, bitmap.height)
+    bitmap.recycle()
+  }
+
   @Test
   fun loadsAndroidResourceUriThroughCoil() = runBlocking {
     val uri = "android.resource://${targetContext.packageName}/${R.mipmap.ic_launcher}"