diff --git a/composeApp/src/androidMain/kotlin/net/codinux/banking/ui/Platform.android.kt b/composeApp/src/androidMain/kotlin/net/codinux/banking/ui/Platform.android.kt
index 9f16c1c..58cfce5 100644
--- a/composeApp/src/androidMain/kotlin/net/codinux/banking/ui/Platform.android.kt
+++ b/composeApp/src/androidMain/kotlin/net/codinux/banking/ui/Platform.android.kt
@@ -1,6 +1,11 @@
 package net.codinux.banking.ui
 
 import android.os.Build
+import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.Dispatchers
+
+actual val Dispatchers.IOorDefault: CoroutineDispatcher
+    get() = Dispatchers.IO
 
 class AndroidPlatform : Platform {
     override val name: String = "Android ${Build.VERSION.SDK_INT}"
diff --git a/composeApp/src/androidMain/kotlin/net/codinux/banking/ui/service/ImageService.android.kt b/composeApp/src/androidMain/kotlin/net/codinux/banking/ui/service/ImageService.android.kt
index a5cf275..4f238e9 100644
--- a/composeApp/src/androidMain/kotlin/net/codinux/banking/ui/service/ImageService.android.kt
+++ b/composeApp/src/androidMain/kotlin/net/codinux/banking/ui/service/ImageService.android.kt
@@ -3,6 +3,10 @@ package net.codinux.banking.ui.service
 import android.graphics.BitmapFactory
 import androidx.compose.ui.graphics.ImageBitmap
 import androidx.compose.ui.graphics.asImageBitmap
+import java.net.URL
 
 actual fun createImageBitmap(imageBytes: ByteArray): ImageBitmap =
-    BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.size).asImageBitmap()
\ No newline at end of file
+    BitmapFactory.decodeByteArray(imageBytes, 0, imageBytes.size).asImageBitmap()
+
+actual fun fetchBytesFromUrl(url: String): ByteArray =
+    URL(url).openStream().buffered().use { it.readBytes() }
\ No newline at end of file
diff --git a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/Platform.kt b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/Platform.kt
index e58badf..5bfcf2e 100644
--- a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/Platform.kt
+++ b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/Platform.kt
@@ -1,5 +1,10 @@
 package net.codinux.banking.ui
 
+import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.Dispatchers
+
+
+expect val Dispatchers.IOorDefault: CoroutineDispatcher
 
 expect fun getPlatform(): Platform
 
diff --git a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/BankIcon.kt b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/BankIcon.kt
new file mode 100644
index 0000000..b47ff6d
--- /dev/null
+++ b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/BankIcon.kt
@@ -0,0 +1,50 @@
+package net.codinux.banking.ui.composables
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.width
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import net.codinux.banking.client.model.UserAccount
+import net.codinux.banking.client.model.UserAccountViewInfo
+import net.codinux.banking.ui.config.DI
+import net.codinux.banking.ui.model.BankInfo
+import net.dankito.banking.banklistcreator.prettifier.BankingGroupMapper
+
+private val bankIconService = DI.bankIconService
+
+@Composable
+fun BankIcon(userAccount: UserAccount?, modifier: Modifier = Modifier) {
+    val iconUrl by remember(userAccount?.bic) { mutableStateOf(userAccount?.let { bankIconService.findIconForBank(it) }) }
+
+    BankIcon(iconUrl, modifier)
+}
+
+private val bankingGroupMapper = BankingGroupMapper()
+
+@Composable
+fun BankIcon(bank: BankInfo, modifier: Modifier = Modifier) {
+    val iconUrl by remember(bank.bic) { mutableStateOf(bankIconService.findIconForBank(bank.name, bankingGroupMapper.getBankingGroup(bank.name, bank.bic))) }
+
+    BankIcon(iconUrl, modifier)
+}
+
+@Composable
+fun BankIcon(userAccount: UserAccountViewInfo?, modifier: Modifier = Modifier) {
+    val iconUrl = userAccount?.let { bankIconService.findIconForBank(it.bankName, it.bankingGroup) }
+
+    BankIcon(iconUrl, modifier)
+}
+
+@Composable
+fun BankIcon(iconUrl: String?, modifier: Modifier = Modifier) {
+    Column(modifier) {
+        iconUrl?.let {
+            IconForUrl(iconUrl, "Favicon of this bank", Modifier.width(16.dp).height(16.dp))
+        }
+    }
+}
\ No newline at end of file
diff --git a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/IconFromUrl.kt b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/IconFromUrl.kt
new file mode 100644
index 0000000..e2da819
--- /dev/null
+++ b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/IconFromUrl.kt
@@ -0,0 +1,35 @@
+package net.codinux.banking.ui.composables
+
+import androidx.compose.foundation.Image
+import androidx.compose.runtime.*
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.ImageBitmap
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import net.codinux.banking.ui.IOorDefault
+import net.codinux.banking.ui.config.DI
+
+private val imageCache = DI.imageCache
+
+@Composable
+fun IconForUrl(iconUrl: String, contentDescription: String, modifier: Modifier = Modifier) {
+    var imageBitmap by remember(iconUrl) { mutableStateOf<ImageBitmap?>(null) }
+
+    val coroutineScope = rememberCoroutineScope()
+
+    if (iconUrl.endsWith(".svg") == false) { // SVG is not supported on Android
+        coroutineScope.launch(Dispatchers.IOorDefault) {
+            val received = imageCache.getImageBitmap(iconUrl)
+
+            withContext(Dispatchers.Main) {
+                imageBitmap = received
+            }
+        }
+    }
+
+
+    imageBitmap?.let { imageBitmap ->
+        Image(imageBitmap, contentDescription, modifier)
+    }
+}
\ No newline at end of file
diff --git a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/TransactionListItem.kt b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/TransactionListItem.kt
index 554d9b7..e50fdc3 100644
--- a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/TransactionListItem.kt
+++ b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/TransactionListItem.kt
@@ -9,25 +9,30 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
+import net.codinux.banking.client.model.UserAccount
 import net.codinux.banking.ui.config.DI
 import net.codinux.banking.ui.model.AccountTransactionViewModel
 
 private val formatUtil = DI.formatUtil
 
 @Composable
-fun TransactionListItem(transaction: AccountTransactionViewModel, backgroundColor: Color) {
+fun TransactionListItem(userAccount: UserAccount?, transaction: AccountTransactionViewModel, backgroundColor: Color) {
     Row(
         modifier = Modifier.fillMaxWidth()
             .background(color = backgroundColor)
             .padding(horizontal = 6.dp, vertical = 6.dp)
     ) {
         Column(Modifier.weight(1f)) {
-            Text(
-                text = transaction.otherPartyName ?: "",
-                Modifier.fillMaxWidth(),
-                maxLines = 1,
-                overflow = TextOverflow.Ellipsis
-            )
+            Row {
+                BankIcon(userAccount, Modifier.padding(end = 6.dp))
+
+                Text(
+                    text = transaction.otherPartyName ?: "",
+                    Modifier.fillMaxWidth(),
+                    maxLines = 1,
+                    overflow = TextOverflow.Ellipsis
+                )
+            }
 
             Spacer(modifier = Modifier.height(6.dp))
 
diff --git a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/TransactionsList.kt b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/TransactionsList.kt
index 1598a77..b3a229a 100644
--- a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/TransactionsList.kt
+++ b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/composables/TransactionsList.kt
@@ -15,7 +15,6 @@ import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
 import kotlinx.datetime.LocalDate
-import net.codinux.banking.client.model.AccountTransaction
 import net.codinux.banking.client.model.Amount
 import net.codinux.banking.ui.extensions.toBigDecimal
 import net.codinux.banking.ui.forms.RoundedCornersCard
@@ -28,6 +27,11 @@ private val formatUtil = DI.formatUtil
 
 @Composable
 fun TransactionsList(uiState: UiState) {
+    val users by uiState.userAccounts.collectAsState()
+    val usersById by remember(users) {
+        derivedStateOf { users.associateBy { it.id } }
+    }
+
     val transactions by uiState.transactions.collectAsState()
 
     val groupedByMonth by remember(transactions) {
@@ -53,7 +57,8 @@ fun TransactionsList(uiState: UiState) {
                 RoundedCornersCard {
                     Column(Modifier.background(Color.White)) { // LazyColumn inside LazyColumn is not allowed
                         monthTransactions.forEachIndexed { index, transaction ->
-                            TransactionListItem(transaction, if (index % 2 == 1) Colors.Zinc100_50 else Color.Transparent)
+                            val backgroundColor = if (index % 2 == 1) Colors.Zinc100_50 else Color.Transparent
+                            TransactionListItem(usersById[transaction.userAccountId], transaction, backgroundColor)
 
                             if (index < monthTransactions.size - 1) {
                                 Divider(color = Colors.Zinc200, thickness = 1.dp)
diff --git a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/config/DI.kt b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/config/DI.kt
index 8495fd1..1025a04 100644
--- a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/config/DI.kt
+++ b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/config/DI.kt
@@ -18,8 +18,11 @@ object DI {
 
     val formatUtil = FormatUtil()
 
+    val imageCache = ImageCache()
+
     val bankFinder = BankFinder()
 
+    val bankIconService = BankIconService()
 
 
     var bankingRepository: BankingRepository = InMemoryBankingRepository(emptyList())
diff --git a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/dialogs/AddAccountDialog.kt b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/dialogs/AddAccountDialog.kt
index 9a5a881..8e3c549 100644
--- a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/dialogs/AddAccountDialog.kt
+++ b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/dialogs/AddAccountDialog.kt
@@ -1,24 +1,20 @@
 package net.codinux.banking.ui.dialogs
 
-import androidx.compose.foundation.background
 import androidx.compose.foundation.layout.*
-import androidx.compose.material.*
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.Close
+import androidx.compose.material.Text
 import androidx.compose.runtime.*
-import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
-import androidx.compose.ui.window.Dialog
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.launch
 import kotlinx.coroutines.withContext
-import net.codinux.banking.ui.forms.*
-import net.codinux.banking.ui.model.BankInfo
+import net.codinux.banking.ui.composables.BankIcon
 import net.codinux.banking.ui.config.Colors
 import net.codinux.banking.ui.config.DI
-import net.codinux.banking.ui.config.Style
+import net.codinux.banking.ui.forms.*
+import net.codinux.banking.ui.model.BankInfo
 
 
 private val bankingService = DI.bankingService
@@ -72,7 +68,16 @@ fun AddAccountDialog(
                 getItemTitle = { bank -> bank.name },
                 fetchSuggestions = { query -> bankingService.findBanks(query) }
             ) { bank ->
-                Text(bank.name)
+                Row {
+                    BankIcon(bank, Modifier.padding(end = 6.dp))
+
+                    Text(
+                        bank.name,
+                        Modifier.fillMaxWidth(),
+                        maxLines = 1,
+                        overflow = TextOverflow.Ellipsis
+                    )
+                }
 
                 Row(Modifier.fillMaxWidth().padding(top = 8.dp)) {
                     Text(bank.bankCode)
diff --git a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/dialogs/EnterTanDialog.kt b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/dialogs/EnterTanDialog.kt
index 5957fb2..bb65794 100644
--- a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/dialogs/EnterTanDialog.kt
+++ b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/dialogs/EnterTanDialog.kt
@@ -20,7 +20,7 @@ import bankmeister.composeapp.generated.resources.zoom_in
 import bankmeister.composeapp.generated.resources.zoom_out
 import net.codinux.banking.client.model.tan.AllowedTanFormat
 import net.codinux.banking.client.model.tan.EnterTanResult
-import net.codinux.banking.ui.config.DI
+import net.codinux.banking.ui.composables.BankIcon
 import net.codinux.banking.ui.config.Internationalization
 import net.codinux.banking.ui.forms.OutlinedTextField
 import net.codinux.banking.ui.model.TanChallengeReceived
@@ -63,6 +63,8 @@ fun EnterTanDialog(tanChallengeReceived: TanChallengeReceived, onDismiss: () ->
         Column(Modifier.fillMaxWidth()) {
             Column(Modifier.fillMaxWidth()) {
                 Row {
+                    BankIcon(challenge.user, Modifier.padding(end = 6.dp))
+
                     Text("${challenge.user.bankName}, Nutzer ${challenge.user.loginName}${challenge.account?.let { ", Konto ${it.productName ?: it.identifier}" } ?: ""}")
                 }
                 Text(
diff --git a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/service/BankIconService.kt b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/service/BankIconService.kt
new file mode 100644
index 0000000..51548db
--- /dev/null
+++ b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/service/BankIconService.kt
@@ -0,0 +1,39 @@
+package net.codinux.banking.ui.service
+
+import net.codinux.banking.client.model.BankingGroup
+import net.codinux.banking.client.model.UserAccount
+
+class BankIconService { // TODO: extract to a common library
+
+    fun findIconForBank(user: UserAccount) = findIconForBank(user.bankName, user.bankingGroup)
+
+    fun findIconForBank(bankName: String, bankingGroup: BankingGroup? = null): String? = when (bankingGroup) {
+        BankingGroup.Sparkasse -> "https://sparkasse.de/favicon-32x32.png"
+        BankingGroup.DKB -> "https://www.ib.dkb.de/favicon.ico"
+        BankingGroup.OldenburgischeLandesbank -> "https://olb.de/assets/img/icon/olb/favicon-32x32.png"
+
+        BankingGroup.VolksUndRaiffeisenbanken -> "https://vr.de/favicon.ico"
+        BankingGroup.Sparda -> "https://www.sparda.de/hidden/layout/images/touchicons/favicon-32x32.png"
+        BankingGroup.PSD -> "https://www.psd-muenchen.de/favicon.ico"
+        BankingGroup.GLS -> "https://gls.de/assets/dist/img/icons/v2/favicon-32x32.png" // "https://gls.de/favicon.ico"
+
+        BankingGroup.DeutscheBank -> "https://www.deutsche-bank.de/etc/designs/db-eccs-pws-pwcc/assets/db-favicon-167x167.png" // "https://www.deutsche-bank.de/etc/designs/db-eccs-pws-pwcc/assets/favicon.svg" // https://master.dwebcms.db.com/application/themes/default/favicon/favicon-32x32.png
+        BankingGroup.Postbank -> "https://postbank.de/etc/designs/pb-eccs-pb/icons/pb-favicon-167x167.png" // "https://postbank.de/etc/designs/pb-eccs-pb/icons/favicon.svg"
+
+        BankingGroup.Commerzbank -> "https://commerzbank.de/ms/media/favicons/apple-touch-icon-57x57_A.png"
+        BankingGroup.Comdirect -> "https://comdirect.de/favicon.ico"
+
+        BankingGroup.Unicredit -> "https://hypovereinsbank.de/etc/designs/hypovereinsbank/img/favicon/favicon.ico"
+        BankingGroup.Targobank -> "https://targobank.de/de/images/favicon/favicon.png" // https://targobank.de/favicon.ico
+        BankingGroup.ING ->  "https://ing.de/favicon.ico" // "https://cdn.ing.de/ing-cms-ui/129.0.2/assets/favicons/apple-touch-icon.png"
+        BankingGroup.Santander -> "https://www.santander.de/ressourcen/img/favicons/favicon.ico"
+
+        BankingGroup.Norisbank -> "https://norisbank.de/etc/designs/db-eccs-nb/assets/nb-favicon-167x167.png" // ""https://norisbank.de/etc/designs/db-eccs-nb/assets/favicon.svg"
+        BankingGroup.Degussa -> "https://www.degussa-bank.de/o/degussa-bank-theme/images/favicon.ico"
+
+        BankingGroup.N26 -> "https://n26.de/favicon.ico"
+
+        else -> null // TODO: call Favicon web service
+    }
+
+}
\ No newline at end of file
diff --git a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/service/ImageCache.kt b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/service/ImageCache.kt
new file mode 100644
index 0000000..4f939d0
--- /dev/null
+++ b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/service/ImageCache.kt
@@ -0,0 +1,69 @@
+package net.codinux.banking.ui.service
+
+import androidx.compose.ui.graphics.ImageBitmap
+import kotlinx.coroutines.*
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
+import net.codinux.log.logger
+
+// TODO: save retrieved bytes to disk so that they don't have to be retrieved on the next app start again
+class ImageCache {
+
+    private val mutex = Mutex()
+
+    private val imageBytesCache = mutableMapOf<String, Deferred<ByteArray?>>()
+
+    private val imageBitmapCache = mutableMapOf<String, Deferred<ImageBitmap?>>()
+
+    private val log by logger()
+
+    // would be create but didn't get it to work with Ktor. Had therefor to introduce platform specific URL loading with loadImageBytes()
+    // simply re-using KtorWebClient as it already has all platform specific engines set up
+//    private val webClient = object : KtorWebClient() {
+//
+//        val ktorClient = client
+//        init {
+//            client
+//        }
+//    }
+
+    suspend fun getImageBytes(url: String): ByteArray? = coroutineScope {
+        mutex.withLock {
+            var cached = imageBytesCache[url]
+            if (cached == null || cached.isCancelled) {
+                //LAZY - to free the mutex lock as fast as possible
+                val loadJob = async(start = CoroutineStart.LAZY) {
+                    loadImage(url) // TODO: in case of failure, remove url from cache and try again?
+                }
+
+                imageBytesCache[url] = loadJob
+                loadJob
+            } else {
+                cached
+            }
+        }.await()
+    }
+
+    suspend fun getImageBitmap(url: String): ImageBitmap? = coroutineScope {
+        getImageBytes(url)?.let {
+            createImageBitmap(it)
+        }
+    }
+
+    private suspend fun loadImage(url: String): ByteArray? {
+        return try {
+//            val clientResponse = webClient.ktorClient.get(url)
+//            if (clientResponse.status.isSuccess()) {
+//                clientResponse.readBytes()
+//            } else {
+//                null
+//            }
+
+            fetchBytesFromUrl(url)
+        } catch (e: Throwable) {
+            log.error(e) { "Failed to load image from url '$url'" }
+            null
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/service/ImageService.kt b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/service/ImageService.kt
index 09cf5dc..87ee1b4 100644
--- a/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/service/ImageService.kt
+++ b/composeApp/src/commonMain/kotlin/net/codinux/banking/ui/service/ImageService.kt
@@ -2,4 +2,6 @@ package net.codinux.banking.ui.service
 
 import androidx.compose.ui.graphics.ImageBitmap
 
-expect fun createImageBitmap(imageBytes: ByteArray): ImageBitmap
\ No newline at end of file
+expect fun createImageBitmap(imageBytes: ByteArray): ImageBitmap
+
+expect fun fetchBytesFromUrl(url: String): ByteArray
\ No newline at end of file
diff --git a/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/Platform.desktop.kt b/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/Platform.desktop.kt
new file mode 100644
index 0000000..8297a7c
--- /dev/null
+++ b/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/Platform.desktop.kt
@@ -0,0 +1,16 @@
+package net.codinux.banking.ui
+
+import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.Dispatchers
+
+actual val Dispatchers.IOorDefault: CoroutineDispatcher
+    get() = Dispatchers.IO
+
+
+class JVMPlatform: Platform {
+    override val name: String = "Java ${System.getProperty("java.version")}"
+
+    override val type: PlatformType = PlatformType.JVM
+}
+
+actual fun getPlatform(): Platform = JVMPlatform()
\ No newline at end of file
diff --git a/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/Platform.jvm.kt b/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/Platform.jvm.kt
deleted file mode 100644
index bd69891..0000000
--- a/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/Platform.jvm.kt
+++ /dev/null
@@ -1,9 +0,0 @@
-package net.codinux.banking.ui
-
-class JVMPlatform: Platform {
-    override val name: String = "Java ${System.getProperty("java.version")}"
-
-    override val type: PlatformType = PlatformType.JVM
-}
-
-actual fun getPlatform(): Platform = JVMPlatform()
\ No newline at end of file
diff --git a/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/dialogs/EnterTanDialogPreview.kt b/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/dialogs/EnterTanDialogPreview.kt
index 58a5be6..e4ab417 100644
--- a/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/dialogs/EnterTanDialogPreview.kt
+++ b/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/dialogs/EnterTanDialogPreview.kt
@@ -2,6 +2,7 @@ package net.codinux.banking.ui.dialogs
 
 import androidx.compose.desktop.ui.tooling.preview.Preview
 import androidx.compose.runtime.Composable
+import net.codinux.banking.client.model.BankingGroup
 import net.codinux.banking.client.model.UserAccountViewInfo
 import net.codinux.banking.client.model.tan.*
 import net.codinux.banking.ui.model.TanChallengeReceived
@@ -10,7 +11,7 @@ import net.codinux.banking.ui.model.TanChallengeReceived
 @Composable
 fun EnterTanDialogPreview_EnterTan() {
     val tanMethods = listOf(TanMethod("Zeig mich an", TanMethodType.AppTan, "902"))
-    val user = UserAccountViewInfo("12345678", "SupiDupiNutzer", "Abzockbank")
+    val user = UserAccountViewInfo("12345678", "SupiDupiNutzer", "Abzockbank", BankingGroup.Postbank)
     val tanChallenge = TanChallenge(TanChallengeType.EnterTan, ActionRequiringTan.GetAccountInfo, "Geben Sie die TAN ein", tanMethods.first().identifier, tanMethods, user = user)
 
     EnterTanDialog(TanChallengeReceived(tanChallenge) { }) { }
@@ -24,7 +25,7 @@ fun EnterTanDialogPreview_TanImage() {
     val tanMethod = TanMethod("photoTAN-Verfahren", TanMethodType.photoTan, "902", 6, AllowedTanFormat.Numeric)
     val tanImage = TanImage("image/png", tanImageBytes)
 
-    val user = UserAccountViewInfo("10010010", "Ihr krasser Login Name", "Phantasie Bank")
+    val user = UserAccountViewInfo("10010010", "Ihr krasser Login Name", "Phantasie Bank", BankingGroup.Comdirect)
 
     val tanChallenge = TanChallenge(TanChallengeType.Image, ActionRequiringTan.GetAccountInfo, "Geben Sie die TAN ein", tanMethod.identifier, listOf(tanMethod), null, emptyList(), tanImage, null, user)
 
diff --git a/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/service/ImageService.desktop.kt b/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/service/ImageService.desktop.kt
index 0853520..227fa10 100644
--- a/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/service/ImageService.desktop.kt
+++ b/composeApp/src/desktopMain/kotlin/net/codinux/banking/ui/service/ImageService.desktop.kt
@@ -3,6 +3,10 @@ package net.codinux.banking.ui.service
 import androidx.compose.ui.graphics.ImageBitmap
 import androidx.compose.ui.graphics.toComposeImageBitmap
 import org.jetbrains.skia.Image
+import java.net.URL
 
 actual fun createImageBitmap(imageBytes: ByteArray): ImageBitmap =
-    Image.makeFromEncoded(imageBytes).toComposeImageBitmap()
\ No newline at end of file
+    Image.makeFromEncoded(imageBytes).toComposeImageBitmap()
+
+actual fun fetchBytesFromUrl(url: String): ByteArray =
+    URL(url).openStream().buffered().use { it.readAllBytes() }
\ No newline at end of file
diff --git a/composeApp/src/jsMain/kotlin/net/codinux/banking/ui/Platform.js.kt b/composeApp/src/jsMain/kotlin/net/codinux/banking/ui/Platform.js.kt
index 2ef636e..9696004 100644
--- a/composeApp/src/jsMain/kotlin/net/codinux/banking/ui/Platform.js.kt
+++ b/composeApp/src/jsMain/kotlin/net/codinux/banking/ui/Platform.js.kt
@@ -1,5 +1,12 @@
 package net.codinux.banking.ui
 
+import kotlinx.coroutines.CoroutineDispatcher
+import kotlinx.coroutines.Dispatchers
+
+actual val Dispatchers.IOorDefault: CoroutineDispatcher
+    get() = Dispatchers.Default
+
+
 class JsPlatform: Platform {
     override val name: String = "Web with Kotlin/Js"
 
diff --git a/composeApp/src/jsMain/kotlin/net/codinux/banking/ui/service/ImageService.js.kt b/composeApp/src/jsMain/kotlin/net/codinux/banking/ui/service/ImageService.js.kt
index 0853520..2ab4070 100644
--- a/composeApp/src/jsMain/kotlin/net/codinux/banking/ui/service/ImageService.js.kt
+++ b/composeApp/src/jsMain/kotlin/net/codinux/banking/ui/service/ImageService.js.kt
@@ -5,4 +5,6 @@ import androidx.compose.ui.graphics.toComposeImageBitmap
 import org.jetbrains.skia.Image
 
 actual fun createImageBitmap(imageBytes: ByteArray): ImageBitmap =
-    Image.makeFromEncoded(imageBytes).toComposeImageBitmap()
\ No newline at end of file
+    Image.makeFromEncoded(imageBytes).toComposeImageBitmap()
+
+actual fun fetchBytesFromUrl(url: String): ByteArray = ByteArray(0)
\ No newline at end of file