Quoted from @monsieurtanuki in #1882

Regarding app size in general as in OP, maybe we could get rid of external packages that we don't use often.
For the record, those are all the external packages we use:

% grep -rh ".dart';" * | grep -v "package:smooth_app" | grep -v "package:flutter" | grep -v "package:openfoodfacts" | sort | uniq -c | sort
   1 import 'package:camera_web/camera_web.dart';
   1 import 'package:carousel_slider/carousel_slider.dart';
   1 import 'package:collection/collection.dart';
   1 import 'package:device_preview/device_preview.dart';
   1 import 'package:fwfh_selectable_text/fwfh_selectable_text.dart';
   1 import 'package:hive/hive.dart';
   1 import 'package:http/http.dart';
   1 import 'package:image_cropper/image_cropper.dart';
   1 import 'package:image_cropper_for_web/image_cropper_for_web.dart';
   1 import 'package:image_picker/image_picker.dart';
   1 import 'package:image_picker_for_web/image_picker_for_web.dart';
   1 import 'package:intl/intl.dart';
   1 import 'package:iso_countries/iso_countries.dart';
   1 import 'package:latlong2/latlong.dart';
   1 import 'package:matomo_forever/matomo_forever.dart';
   1 import 'package:modal_bottom_sheet/modal_bottom_sheet.dart';
   1 import 'package:package_info_plus_web/package_info_plus_web.dart';
   1 import 'package:path/path.dart';
   1 import 'package:path_provider/path_provider.dart';
   1 import 'package:percent_indicator/percent_indicator.dart';
   1 import 'package:photo_view/photo_view.dart';
   1 import 'package:photo_view/photo_view_gallery.dart';
   1 import 'package:qr_code_scanner/qr_code_scanner.dart';
   1 import 'package:rxdart/rxdart.dart';
   1 import 'package:sentry_flutter/sentry_flutter_web.dart';
   1 import 'package:shared_preferences/shared_preferences.dart';
   1 import 'package:shared_preferences_web/shared_preferences_web.dart';
   1 import 'package:typed_data/typed_buffers.dart';
   1 import 'package:url_launcher_web/url_launcher_web.dart';
   1 import 'package:uuid/uuid.dart';
   2 import 'package:mailto/mailto.dart';
   2 import 'package:permission_handler/permission_handler.dart';
   2 import 'package:sentry_flutter/sentry_flutter.dart';
   2 import 'package:visibility_detector/visibility_detector.dart';
   4 import 'package:google_ml_barcode_scanner/google_ml_barcode_scanner.dart';
   4 import 'package:package_info_plus/package_info_plus.dart';
   4 import 'package:url_launcher/url_launcher.dart';
   6 import 'package:camera/camera.dart';
   6 import 'package:hive_flutter/hive_flutter.dart';
   8 import 'package:auto_size_text/auto_size_text.dart';
  44 import 'package:provider/provider.dart';

Originally posted by @monsieurtanuki in #1882 (comment)