diff --git a/app/src/main/java/net/gsantner/opoc/util/ContextUtils.java b/app/src/main/java/net/gsantner/opoc/util/ContextUtils.java
index 9f3b6221..f4b730b4 100644
--- a/app/src/main/java/net/gsantner/opoc/util/ContextUtils.java
+++ b/app/src/main/java/net/gsantner/opoc/util/ContextUtils.java
@@ -12,6 +12,7 @@ package net.gsantner.opoc.util;
 
 import android.annotation.SuppressLint;
 import android.app.Activity;
+import android.app.ActivityManager;
 import android.app.AlarmManager;
 import android.app.PendingIntent;
 import android.content.ActivityNotFoundException;
@@ -47,6 +48,7 @@ import android.support.annotation.Nullable;
 import android.support.annotation.RawRes;
 import android.support.annotation.StringRes;
 import android.support.graphics.drawable.VectorDrawableCompat;
+import android.support.v4.app.ActivityManagerCompat;
 import android.support.v4.content.ContextCompat;
 import android.support.v4.graphics.drawable.DrawableCompat;
 import android.support.v4.util.Pair;
@@ -945,6 +947,16 @@ public class ContextUtils {
         }
     }
 
+    public boolean isDeviceGoodHardware() {
+        try {
+            ActivityManager activityManager = (ActivityManager) _context.getSystemService(Context.ACTIVITY_SERVICE);
+            return !ActivityManagerCompat.isLowRamDevice(activityManager) &&
+                    Runtime.getRuntime().availableProcessors() >= 4 &&
+                    activityManager.getMemoryClass() >= 128;
+        } catch (Exception ignored) {
+            return true;
+        }
+    }
 }
 
 
diff --git a/app/src/main/java/net/gsantner/opoc/util/FileUtils.java b/app/src/main/java/net/gsantner/opoc/util/FileUtils.java
index a358ebff..14c57344 100644
--- a/app/src/main/java/net/gsantner/opoc/util/FileUtils.java
+++ b/app/src/main/java/net/gsantner/opoc/util/FileUtils.java
@@ -16,6 +16,7 @@ import java.io.BufferedOutputStream;
 import java.io.BufferedReader;
 import java.io.BufferedWriter;
 import java.io.ByteArrayOutputStream;
+import java.io.DataInputStream;
 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
@@ -42,13 +43,22 @@ public class FileUtils {
 
     public static String readTextFileFast(final File file) {
         try {
-            return new String(readCloseBinaryStream(new FileInputStream(file)));
+            return new String(readCloseStreamWithSize(new FileInputStream(file), (int) file.length()));
         } catch (FileNotFoundException e) {
             System.err.println("readTextFileFast: File " + file + " not found.");
         }
         return "";
     }
 
+    public static byte[] readCloseStreamWithSize(final InputStream stream, int size) {
+        byte[] data = new byte[size];
+        try (DataInputStream dis = new DataInputStream(stream)) {
+            dis.readFully(data);
+        } catch (IOException ignored) {
+        }
+        return data;
+    }
+
     public static String readTextFile(final File file) {
         try {
             return readCloseTextStream(new FileInputStream(file));
diff --git a/app/src/main/java/net/gsantner/opoc/util/ShareUtil.java b/app/src/main/java/net/gsantner/opoc/util/ShareUtil.java
index 756000d3..cc6ae7bb 100644
--- a/app/src/main/java/net/gsantner/opoc/util/ShareUtil.java
+++ b/app/src/main/java/net/gsantner/opoc/util/ShareUtil.java
@@ -65,6 +65,7 @@ import java.io.FileOutputStream;
 import java.io.IOException;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
+import java.util.Collection;
 import java.util.Date;
 import java.util.List;
 import java.util.Locale;
@@ -230,6 +231,30 @@ public class ShareUtil {
         }
     }
 
+    /**
+     * Share the given files as stream with given mime-type
+     *
+     * @param files    The files to share
+     * @param mimeType The files mime type. Usally * / * is the best option
+     */
+    public boolean shareStreamMultiple(Collection<File> files, String mimeType) {
+        ArrayList<Uri> uris = new ArrayList<>();
+        for (File file : files) {
+            File uri = new File(file.toString());
+            uris.add(FileProvider.getUriForFile(_context, getFileProviderAuthority(), file));
+        }
+
+        try {
+            Intent intent = new Intent(Intent.ACTION_SEND_MULTIPLE);
+            intent.setType(mimeType);
+            intent.putParcelableArrayListExtra(Intent.EXTRA_STREAM, uris);
+            showChooser(intent, null);
+            return true;
+        } catch (Exception e) { // FileUriExposed(API24) / IllegalArgument
+            return false;
+        }
+    }
+
     /**
      * Start calendar application to add new event, with given details prefilled
      */