diff --git a/apng_library/src/main/AndroidManifest.xml b/apng_library/src/main/AndroidManifest.xml
index eb06482..a49ba4d 100644
--- a/apng_library/src/main/AndroidManifest.xml
+++ b/apng_library/src/main/AndroidManifest.xml
@@ -1,5 +1,2 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="oupson.apng">
-    <!-- TODO REMOVE -->
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
+<manifest package="oupson.apng">
 </manifest>
diff --git a/apng_library/src/main/java/oupson/apng/Loader.kt b/apng_library/src/main/java/oupson/apng/Loader.kt
index 99a8425..2a45fa6 100644
--- a/apng_library/src/main/java/oupson/apng/Loader.kt
+++ b/apng_library/src/main/java/oupson/apng/Loader.kt
@@ -17,6 +17,7 @@ class Loader {
          * @throws IOException thrown when retrieving the file.
          * @throws Exception when returned code of the [HttpURLConnection] is not 200 (OK).
          */
+        @Suppress("BlockingMethodInNonBlockingContext") // RELATED TO ERROR.
         @Throws(IOException::class, Exception::class)
         suspend fun load(url: URL): ByteArray =
             withContext(Dispatchers.IO) {
diff --git a/apng_library/src/main/java/oupson/apng/decoder/ApngDecoder.kt b/apng_library/src/main/java/oupson/apng/decoder/ApngDecoder.kt
index 82c76dc..f660a68 100644
--- a/apng_library/src/main/java/oupson/apng/decoder/ApngDecoder.kt
+++ b/apng_library/src/main/java/oupson/apng/decoder/ApngDecoder.kt
@@ -571,7 +571,7 @@ class ApngDecoder {
          * @param config Configuration applied to the bitmap added to the animation. Please note that the frame is decoded in ARGB_8888 and converted after, for the buffer.
          * @return [AnimationDrawable] if successful and an [AnimatedImageDrawable] if the image decoded is not an APNG but a gif.
          */
-        @Suppress("unused")
+        @Suppress("unused", "BlockingMethodInNonBlockingContext")
         @JvmStatic
         suspend fun decodeApng(
             context: Context,
diff --git a/apng_library/src/main/java/oupson/apng/imageUtils/PngEncoder.kt b/apng_library/src/main/java/oupson/apng/imageUtils/PngEncoder.kt
index e66571d..4f256dc 100644
--- a/apng_library/src/main/java/oupson/apng/imageUtils/PngEncoder.kt
+++ b/apng_library/src/main/java/oupson/apng/imageUtils/PngEncoder.kt
@@ -12,6 +12,7 @@ import kotlin.math.min
 /**
  * Taken from http://catcode.com/pngencoder/com/keypoint/PngEncoder.java
  */
+@Deprecated("It now integrated in ApngEncoder and will be removed after the 1.10 release")
 class PngEncoder {
     companion object {
         /** Constants for filter (NONE)  */
diff --git a/apng_library/src/main/java/oupson/apng/imageUtils/PnnQuantizer.java b/apng_library/src/main/java/oupson/apng/imageUtils/PnnQuantizer.java
index 3afe64c..8078f20 100644
--- a/apng_library/src/main/java/oupson/apng/imageUtils/PnnQuantizer.java
+++ b/apng_library/src/main/java/oupson/apng/imageUtils/PnnQuantizer.java
@@ -20,6 +20,7 @@ import java.util.List;
 import java.util.Random;
 
 @SuppressWarnings("WeakerAccess")
+@Deprecated()
 public class PnnQuantizer {
     private final short SHORT_MAX = Short.MAX_VALUE;
     private final char BYTE_MAX = -Byte.MIN_VALUE + Byte.MAX_VALUE;
@@ -31,7 +32,6 @@ public class PnnQuantizer {
     @SuppressLint("UseSparseArrays")
     private final HashMap<Integer, short[]> closestMap = new HashMap();
 
-    @SuppressWarnings("unused")
     public PnnQuantizer(String fname) {
         fromBitmap(fname);
     }
diff --git a/app-test/src/androidTest/java/oupson/apngcreator/ExampleInstrumentedTest.kt b/app-test/src/androidTest/java/oupson/apngcreator/ExampleInstrumentedTest.kt
deleted file mode 100644
index ae350dd..0000000
--- a/app-test/src/androidTest/java/oupson/apngcreator/ExampleInstrumentedTest.kt
+++ /dev/null
@@ -1,22 +0,0 @@
-package oupson.apngcreator
-
-import androidx.test.InstrumentationRegistry
-import androidx.test.runner.AndroidJUnit4
-import org.junit.Assert.assertEquals
-import org.junit.Test
-import org.junit.runner.RunWith
-
-/**
- * Instrumented test, which will execute on an Android device.
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-@RunWith(AndroidJUnit4::class)
-class ExampleInstrumentedTest {
-    @Test
-    fun useAppContext() {
-        // Context of the app under test.
-        val appContext = InstrumentationRegistry.getTargetContext()
-        assertEquals("oupson.apngcreator", appContext.packageName)
-    }
-}
diff --git a/app-test/src/main/AndroidManifest.xml b/app-test/src/main/AndroidManifest.xml
index 4866642..9a2717f 100644
--- a/app-test/src/main/AndroidManifest.xml
+++ b/app-test/src/main/AndroidManifest.xml
@@ -3,8 +3,8 @@
           xmlns:tools="http://schemas.android.com/tools"
           package="oupson.apngcreator">
 
-    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
-    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
 
     <application
             android:fullBackupContent="false"
@@ -32,7 +32,7 @@
                 <category android:name="android.intent.category.BROWSABLE"/>
                 <category android:name="android.intent.category.DEFAULT"/>
 
-                <data android:mimeType="image/png"/>
+                <data android:mimeType="image/*"/>
             </intent-filter>
         </activity>
         <activity
diff --git a/app-test/src/main/java/oupson/apngcreator/activities/ViewerActivity.kt b/app-test/src/main/java/oupson/apngcreator/activities/ViewerActivity.kt
index 74e430c..1739e19 100644
--- a/app-test/src/main/java/oupson/apngcreator/activities/ViewerActivity.kt
+++ b/app-test/src/main/java/oupson/apngcreator/activities/ViewerActivity.kt
@@ -28,13 +28,23 @@ class ViewerActivity : AppCompatActivity() {
 
     override fun onResume() {
         super.onResume()
-        if (ContextCompat.checkSelfPermission(applicationContext, Manifest.permission.WRITE_EXTERNAL_STORAGE)
-                != PackageManager.PERMISSION_GRANTED) {
-            ActivityCompat.requestPermissions(this,
-                    arrayOf(Manifest.permission.WRITE_EXTERNAL_STORAGE),
-                    2)
-        } else {
-            load()
+
+
+        if (intent.data != null) {
+            if (intent.data!!.scheme == "file" && ContextCompat.checkSelfPermission(
+                    applicationContext,
+                    Manifest.permission.READ_EXTERNAL_STORAGE
+                )
+                != PackageManager.PERMISSION_GRANTED
+            ) {
+                ActivityCompat.requestPermissions(
+                    this,
+                    arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE),
+                    2
+                )
+            } else {
+                load()
+            }
         }
     }
 
diff --git a/app-test/src/test/java/oupson/apngcreator/ExampleUnitTest.kt b/app-test/src/test/java/oupson/apngcreator/ExampleUnitTest.kt
deleted file mode 100644
index ac1b477..0000000
--- a/app-test/src/test/java/oupson/apngcreator/ExampleUnitTest.kt
+++ /dev/null
@@ -1,16 +0,0 @@
-package oupson.apngcreator
-
-import org.junit.Assert.assertEquals
-import org.junit.Test
-
-/**
- * Example local unit test, which will execute on the development machine (host).
- *
- * See [testing documentation](http://d.android.com/tools/testing).
- */
-class ExampleUnitTest {
-    @Test
-    fun addition_isCorrect() {
-        assertEquals(4, 2 + 2)
-    }
-}