diff --git a/CHANGELOG.md b/CHANGELOG.md
index f022e05..074850b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,12 +2,14 @@
 ### Features
 - Added translations: Armenian, Turkish, Chinese (Simplified)
 - Url-ify matrix identifiers
+- Use server-side generated thumbnails in cleartext rooms
+- Add option to send images in their original resolution
+- Add additional confirmation for sending files & share intents
 ### Changes
 - Tapping links, pills, etc. now does stuff
 ### Fixes:
 - Various html rendering and url-ifying fixes
 - Added support for blurhashes
-- Use server-side generated thumbnails in cleartext rooms
 - Image viewer now eventually displays the original image, not only the thumbnail
 
 # Version 0.17.0 - 2020-08-31
diff --git a/lib/components/dialogs/send_file_dialog.dart b/lib/components/dialogs/send_file_dialog.dart
new file mode 100644
index 0000000..6f5b7da
--- /dev/null
+++ b/lib/components/dialogs/send_file_dialog.dart
@@ -0,0 +1,134 @@
+import 'dart:typed_data';
+import 'dart:ui';
+
+import 'package:flutter/material.dart';
+import 'package:famedlysdk/famedlysdk.dart';
+import 'package:native_imaging/native_imaging.dart' as native;
+
+import '../../utils/matrix_file_extension.dart';
+import '../../utils/room_send_file_extension.dart';
+import '../../components/dialogs/simple_dialogs.dart';
+import '../../l10n/l10n.dart';
+
+class SendFileDialog extends StatefulWidget {
+  final Room room;
+  final MatrixFile file;
+
+  const SendFileDialog({this.room, this.file, Key key}) : super(key: key);
+
+  @override
+  _SendFileDialogState createState() => _SendFileDialogState();
+}
+
+class _SendFileDialogState extends State<SendFileDialog> {
+  bool origImage = false;
+
+  Future<void> _send() async {
+    var file = widget.file;
+    if (file is MatrixImageFile && !origImage) {
+      final imgFile = file as MatrixImageFile;
+      // resize to max 1600 x 1600
+      try {
+        await native.init();
+        var nativeImg = native.Image();
+        try {
+          await nativeImg.loadEncoded(imgFile.bytes);
+          imgFile.width = nativeImg.width();
+          imgFile.height = nativeImg.height();
+        } on UnsupportedError {
+          final dartCodec = await instantiateImageCodec(imgFile.bytes);
+          final dartFrame = await dartCodec.getNextFrame();
+          imgFile.width = dartFrame.image.width;
+          imgFile.height = dartFrame.image.height;
+          final rgbaData = await dartFrame.image.toByteData();
+          final rgba = Uint8List.view(
+              rgbaData.buffer, rgbaData.offsetInBytes, rgbaData.lengthInBytes);
+          dartFrame.image.dispose();
+          dartCodec.dispose();
+          nativeImg.loadRGBA(imgFile.width, imgFile.height, rgba);
+        }
+
+        const max = 1600;
+        if (imgFile.width > max || imgFile.height > max) {
+          var w = max, h = max;
+          if (imgFile.width > imgFile.height) {
+            h = max * imgFile.height ~/ imgFile.width;
+          } else {
+            w = max * imgFile.width ~/ imgFile.height;
+          }
+
+          final scaledImg = nativeImg.resample(w, h, native.Transform.lanczos);
+          nativeImg.free();
+          nativeImg = scaledImg;
+        }
+        final jpegBytes = await nativeImg.toJpeg(75);
+        file = MatrixImageFile(
+            bytes: jpegBytes,
+            name: 'scaled_' + imgFile.name.split('.').first + '.jpg');
+        nativeImg.free();
+      } catch (e) {
+        // couldn't resize
+      }
+    }
+    await widget.room.sendFileEventWithThumbnail(file);
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    var sendStr = L10n.of(context).sendFile;
+    if (widget.file is MatrixImageFile) {
+      sendStr = L10n.of(context).sendImage;
+    } else if (widget.file is MatrixAudioFile) {
+      sendStr = L10n.of(context).sendAudio;
+    } else if (widget.file is MatrixVideoFile) {
+      sendStr = L10n.of(context).sendVideo;
+    }
+    Widget contentWidget;
+    if (widget.file is MatrixImageFile) {
+      contentWidget = Column(mainAxisSize: MainAxisSize.min, children: <Widget>[
+        Flexible(
+          child: Image.memory(
+            widget.file.bytes,
+            fit: BoxFit.contain,
+          ),
+        ),
+        Text(widget.file.name),
+        Row(
+          children: <Widget>[
+            Checkbox(
+              value: origImage,
+              onChanged: (v) => setState(() => origImage = v),
+            ),
+            InkWell(
+              onTap: () => setState(() => origImage = !origImage),
+              child: Text(L10n.of(context).sendOriginal +
+                  ' (${widget.file.sizeString})'),
+            ),
+          ],
+        )
+      ]);
+    } else {
+      contentWidget = Text('${widget.file.name} (${widget.file.sizeString})');
+    }
+    return AlertDialog(
+      title: Text(sendStr),
+      content: contentWidget,
+      actions: <Widget>[
+        FlatButton(
+          child: Text(L10n.of(context).cancel),
+          onPressed: () {
+            // just close the dialog
+            Navigator.of(context).pop();
+          },
+        ),
+        FlatButton(
+          child: Text(L10n.of(context).send),
+          onPressed: () async {
+            await SimpleDialogs(context).tryRequestWithLoadingDialog(_send());
+            await Navigator.of(context).pop();
+          },
+        ),
+      ],
+    );
+  }
+}
diff --git a/lib/components/list_items/chat_list_item.dart b/lib/components/list_items/chat_list_item.dart
index 6680e01..a6d314b 100644
--- a/lib/components/list_items/chat_list_item.dart
+++ b/lib/components/list_items/chat_list_item.dart
@@ -13,6 +13,7 @@ import '../theme_switcher.dart';
 import '../avatar.dart';
 import '../dialogs/simple_dialogs.dart';
 import '../matrix.dart';
+import '../dialogs/send_file_dialog.dart';
 
 class ChatListItem extends StatelessWidget {
   final Room room;
@@ -73,11 +74,12 @@ class ChatListItem extends StatelessWidget {
         if (Matrix.of(context).shareContent != null) {
           if (Matrix.of(context).shareContent['msgtype'] ==
               'chat.fluffy.shared_file') {
-            await SimpleDialogs(context).tryRequestWithErrorToast(
-              room.sendFileEvent(
-                Matrix.of(context).shareContent['file'],
-              ),
-            );
+            await showDialog(
+                context: context,
+                builder: (context) => SendFileDialog(
+                      file: Matrix.of(context).shareContent['file'],
+                      room: room,
+                    ));
           } else {
             unawaited(room.sendEvent(Matrix.of(context).shareContent));
           }
diff --git a/lib/l10n/intl_messages.arb b/lib/l10n/intl_messages.arb
index f1ff9c4..cf43319 100644
--- a/lib/l10n/intl_messages.arb
+++ b/lib/l10n/intl_messages.arb
@@ -1,5 +1,5 @@
 {
-  "@@last_modified": "2020-08-16T12:43:17.825046",
+  "@@last_modified": "2020-09-04T14:58:35.809079",
   "About": "About",
   "@About": {
     "type": "text",
@@ -1184,6 +1184,11 @@
     "type": "text",
     "placeholders": {}
   },
+  "Send audio": "Send audio",
+  "@Send audio": {
+    "type": "text",
+    "placeholders": {}
+  },
   "Send file": "Send file",
   "@Send file": {
     "type": "text",
@@ -1194,6 +1199,16 @@
     "type": "text",
     "placeholders": {}
   },
+  "Send original": "Send original",
+  "@Send original": {
+    "type": "text",
+    "placeholders": {}
+  },
+  "Send video": "Send video",
+  "@Send video": {
+    "type": "text",
+    "placeholders": {}
+  },
   "sentAFile": "{username} sent a file",
   "@sentAFile": {
     "type": "text",
diff --git a/lib/l10n/l10n.dart b/lib/l10n/l10n.dart
index 4a302cd..6a785cf 100644
--- a/lib/l10n/l10n.dart
+++ b/lib/l10n/l10n.dart
@@ -735,10 +735,16 @@ class L10n extends MatrixLocalizations {
 
   String get sendAMessage => Intl.message("Send a message");
 
+  String get sendAudio => Intl.message('Send audio');
+
   String get sendFile => Intl.message('Send file');
 
   String get sendImage => Intl.message('Send image');
 
+  String get sendOriginal => Intl.message('Send original');
+
+  String get sendVideo => Intl.message('Send video');
+
   String sentAFile(String username) => Intl.message(
         "$username sent a file",
         name: "sentAFile",
diff --git a/lib/l10n/messages_messages.dart b/lib/l10n/messages_messages.dart
index 1c69e79..5532342 100644
--- a/lib/l10n/messages_messages.dart
+++ b/lib/l10n/messages_messages.dart
@@ -394,8 +394,11 @@ class MessageLookup extends MessageLookupByLibrary {
         "Send": MessageLookupByLibrary.simpleMessage("Send"),
         "Send a message":
             MessageLookupByLibrary.simpleMessage("Send a message"),
+        "Send audio": MessageLookupByLibrary.simpleMessage("Send audio"),
         "Send file": MessageLookupByLibrary.simpleMessage("Send file"),
         "Send image": MessageLookupByLibrary.simpleMessage("Send image"),
+        "Send original": MessageLookupByLibrary.simpleMessage("Send original"),
+        "Send video": MessageLookupByLibrary.simpleMessage("Send video"),
         "Set a profile picture":
             MessageLookupByLibrary.simpleMessage("Set a profile picture"),
         "Set group description":
diff --git a/lib/utils/matrix_file_extension.dart b/lib/utils/matrix_file_extension.dart
index f2c92b9..d6bf725 100644
--- a/lib/utils/matrix_file_extension.dart
+++ b/lib/utils/matrix_file_extension.dart
@@ -31,4 +31,34 @@ extension MatrixFileExtension on MatrixFile {
     }
     return;
   }
+
+  MatrixFile get detectFileType {
+    if (msgType == MessageTypes.Image) {
+      return MatrixImageFile(bytes: bytes, name: name);
+    }
+    if (msgType == MessageTypes.Video) {
+      return MatrixVideoFile(bytes: bytes, name: name);
+    }
+    if (msgType == MessageTypes.Audio) {
+      return MatrixAudioFile(bytes: bytes, name: name);
+    }
+    return this;
+  }
+
+  String get sizeString {
+    var size = this.size.toDouble();
+    if (size < 1000000) {
+      size = size / 1000;
+      size = (size * 10).round() / 10;
+      return '${size.toString()} KB';
+    } else if (size < 1000000000) {
+      size = size / 1000000;
+      size = (size * 10).round() / 10;
+      return '${size.toString()} MB';
+    } else {
+      size = size / 1000000000;
+      size = (size * 10).round() / 10;
+      return '${size.toString()} GB';
+    }
+  }
 }
diff --git a/lib/views/chat.dart b/lib/views/chat.dart
index 6d490af..ec65569 100644
--- a/lib/views/chat.dart
+++ b/lib/views/chat.dart
@@ -23,11 +23,13 @@ import 'package:flutter/services.dart';
 import 'package:memoryfilepicker/memoryfilepicker.dart';
 import 'package:pedantic/pedantic.dart';
 import 'package:image_picker/image_picker.dart';
+import 'package:file_picker_platform_interface/file_picker_platform_interface.dart';
 
 import 'chat_details.dart';
 import 'chat_list.dart';
 import '../components/input_bar.dart';
-import '../utils/room_send_file_extension.dart';
+import '../components/dialogs/send_file_dialog.dart';
+import '../utils/matrix_file_extension.dart';
 
 class ChatView extends StatelessWidget {
   final String id;
@@ -191,39 +193,36 @@ class _ChatState extends State<_Chat> {
   void sendFileAction(BuildContext context) async {
     var file = await MemoryFilePicker.getFile();
     if (file == null) return;
-    await SimpleDialogs(context).tryRequestWithLoadingDialog(
-      room.sendFileEventWithThumbnail(
-        MatrixFile(bytes: file.bytes, name: file.path),
-      ),
-    );
+    await showDialog(
+        context: context,
+        builder: (context) => SendFileDialog(
+              file:
+                  MatrixFile(bytes: file.bytes, name: file.path).detectFileType,
+              room: room,
+            ));
   }
 
   void sendImageAction(BuildContext context) async {
-    var file = await MemoryFilePicker.getImage(
-        source: ImageSource.gallery,
-        imageQuality: 50,
-        maxWidth: 1600,
-        maxHeight: 1600);
+    var file = await MemoryFilePicker.getFile(type: FileType.image);
     if (file == null) return;
-    await SimpleDialogs(context).tryRequestWithLoadingDialog(
-      room.sendFileEventWithThumbnail(
-        MatrixImageFile(bytes: await file.bytes, name: file.path),
-      ),
-    );
+    final bytes = await file.bytes;
+    await showDialog(
+        context: context,
+        builder: (context) => SendFileDialog(
+              file: MatrixImageFile(bytes: bytes, name: file.path),
+              room: room,
+            ));
   }
 
   void openCameraAction(BuildContext context) async {
-    var file = await MemoryFilePicker.getImage(
-        source: ImageSource.camera,
-        imageQuality: 50,
-        maxWidth: 1600,
-        maxHeight: 1600);
+    var file = await MemoryFilePicker.getImage(source: ImageSource.camera);
     if (file == null) return;
-    await SimpleDialogs(context).tryRequestWithLoadingDialog(
-      room.sendFileEventWithThumbnail(
-        MatrixImageFile(bytes: file.bytes, name: file.path),
-      ),
-    );
+    await showDialog(
+        context: context,
+        builder: (context) => SendFileDialog(
+              file: MatrixImageFile(bytes: file.bytes, name: file.path),
+              room: room,
+            ));
   }
 
   void voiceMessageAction(BuildContext context) async {
@@ -235,12 +234,13 @@ class _ChatState extends State<_Chat> {
             ));
     if (result == null) return;
     final audioFile = File(result);
-    await SimpleDialogs(context).tryRequestWithLoadingDialog(
-      room.sendFileEvent(
-        MatrixAudioFile(
-            bytes: audioFile.readAsBytesSync(), name: audioFile.path),
-      ),
-    );
+    await showDialog(
+        context: context,
+        builder: (context) => SendFileDialog(
+              file: MatrixAudioFile(
+                  bytes: audioFile.readAsBytesSync(), name: audioFile.path),
+              room: room,
+            ));
   }
 
   String _getSelectedEventString(BuildContext context) {
diff --git a/lib/views/chat_list.dart b/lib/views/chat_list.dart
index 404a33f..0028428 100644
--- a/lib/views/chat_list.dart
+++ b/lib/views/chat_list.dart
@@ -17,6 +17,7 @@ import '../components/matrix.dart';
 import '../l10n/l10n.dart';
 import '../utils/app_route.dart';
 import '../utils/url_launcher.dart';
+import '../utils/matrix_file_extension.dart';
 import 'archive.dart';
 import 'homeserver_picker.dart';
 import 'new_group.dart';
@@ -119,7 +120,7 @@ class _ChatListState extends State<ChatList> {
       });
       setState(() => null);
     });
-    _initReceiveSharingINtent();
+    _initReceiveSharingIntent();
     super.initState();
   }
 
@@ -139,7 +140,7 @@ class _ChatListState extends State<ChatList> {
       'file': MatrixFile(
         bytes: file.readAsBytesSync(),
         name: file.path,
-      ),
+      ).detectFileType,
     };
   }
 
@@ -158,7 +159,7 @@ class _ChatListState extends State<ChatList> {
     };
   }
 
-  void _initReceiveSharingINtent() {
+  void _initReceiveSharingIntent() {
     if (kIsWeb) return;
 
     // For sharing images coming from outside the app while the app is in the memory
diff --git a/pubspec.lock b/pubspec.lock
index 213b400..0d461ef 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -248,6 +248,13 @@ packages:
       url: "https://pub.dartlang.org"
     source: hosted
     version: "0.5.0"
+  flutter_cache_manager:
+    dependency: transitive
+    description:
+      name: flutter_cache_manager
+      url: "https://pub.dartlang.org"
+    source: hosted
+    version: "1.4.1"
   flutter_keyboard_visibility:
     dependency: transitive
     description:
@@ -486,7 +493,7 @@ packages:
       name: memoryfilepicker
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "0.1.1"
+    version: "0.1.3"
   meta:
     dependency: transitive
     description:
@@ -1000,4 +1007,4 @@ packages:
     version: "0.1.2"
 sdks:
   dart: ">=2.10.0-0.0.dev <2.10.0"
-  flutter: ">=1.18.0-6.0.pre <2.0.0"
+  flutter: ">=1.20.0 <2.0.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 2e9d463..ad16b7e 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -31,7 +31,7 @@ dependencies:
 
   localstorage: ^3.0.1+4
   bubble: ^1.1.9+1
-  memoryfilepicker: ^0.1.1
+  memoryfilepicker: ^0.1.3
   url_launcher: ^5.4.1
   url_launcher_web: ^0.1.0
   flutter_advanced_networkimage: