diff --git a/actors/cart_manager/src/lib.rs b/actors/cart_manager/src/lib.rs
index 64ba6fe..b4bb1e4 100644
--- a/actors/cart_manager/src/lib.rs
+++ b/actors/cart_manager/src/lib.rs
@@ -1,3 +1,7 @@
+#![feature(drain_filter)]
+
+use std::collections::HashSet;
+
 use database_manager::{query_db, Database};
 use model::{
     AccountId, ProductId, Quantity, QuantityUnit, ShoppingCartId, ShoppingCartItem,
@@ -60,8 +64,10 @@ pub enum Error {
     ShoppingCartFailed,
     #[error("Shopping cart is not available for unknown reason")]
     CartNotAvailable,
-    #[error("Failed to add item to cart")]
-    CantAddItem,
+    #[error("Failed to modify item to cart")]
+    CantModifyItem,
+    #[error("Failed to modify cart")]
+    CantModifyCart,
     #[error("{0}")]
     Db(#[from] database_manager::Error),
     #[error("Unable to update cart item")]
@@ -89,7 +95,7 @@ impl CartManager {
 }
 
 #[derive(actix::Message)]
-#[rtype(result = "Result<ShoppingCartItem>")]
+#[rtype(result = "Result<Option<ShoppingCartItem>>")]
 pub struct ModifyItem {
     pub buyer_id: AccountId,
     pub product_id: ProductId,
@@ -97,9 +103,12 @@ pub struct ModifyItem {
     pub quantity_unit: QuantityUnit,
 }
 
-cart_async_handler!(ModifyItem, modify_item, ShoppingCartItem);
+cart_async_handler!(ModifyItem, modify_item, Option<ShoppingCartItem>);
 
-async fn modify_item(msg: ModifyItem, db: actix::Addr<Database>) -> Result<ShoppingCartItem> {
+async fn modify_item(
+    msg: ModifyItem,
+    db: actix::Addr<Database>,
+) -> Result<Option<ShoppingCartItem>> {
     let _cart = query_db!(
         db,
         database_manager::EnsureActiveShoppingCart {
@@ -127,11 +136,17 @@ async fn modify_item(msg: ModifyItem, db: actix::Addr<Database>) -> Result<Shopp
         database_manager::ActiveCartItemByProduct {
             product_id: msg.product_id
         },
-        Error::CantAddItem
+        Error::CantModifyItem
     );
 
     match item {
-        Some(item) => Ok(query_db!(
+        Some(item) if **item.quantity == 0 => Ok(query_db!(
+            db,
+            database_manager::DeleteShoppingCartItem { id: item.id },
+            passthrough Error::Db,
+            Error::CantModifyItem
+        )),
+        Some(item) => Ok(Some(query_db!(
             db,
             database_manager::UpdateShoppingCartItem {
                 id: item.id,
@@ -141,9 +156,9 @@ async fn modify_item(msg: ModifyItem, db: actix::Addr<Database>) -> Result<Shopp
                 quantity_unit: msg.quantity_unit,
             },
             passthrough Error::Db,
-            Error::CantAddItem
-        )),
-        None => Ok(query_db!(
+            Error::CantModifyItem
+        ))),
+        None => Ok(Some(query_db!(
             db,
             database_manager::CreateShoppingCartItem {
                 product_id: msg.product_id,
@@ -152,8 +167,8 @@ async fn modify_item(msg: ModifyItem, db: actix::Addr<Database>) -> Result<Shopp
                 quantity_unit: msg.quantity_unit,
             },
             passthrough Error::Db,
-            Error::CantAddItem
-        )),
+            Error::CantModifyItem
+        ))),
     }
 }
 
@@ -170,68 +185,101 @@ pub(crate) async fn remove_product(
     msg: RemoveProduct,
     db: actix::Addr<Database>,
 ) -> Result<Option<ShoppingCartItem>> {
-    match db
-        .send(database_manager::RemoveCartItem {
+    Ok(query_db!(
+        db,
+        database_manager::RemoveCartItem {
             shopping_cart_id: msg.shopping_cart_id,
             shopping_cart_item_id: Some(msg.shopping_cart_item_id),
             product_id: None,
-        })
-        .await
-    {
-        Ok(Ok(row)) => Ok(row),
-        Ok(Err(db_err)) => {
-            log::error!("{db_err}");
-            Err(Error::UpdateFailed)
-        }
-        Err(act_err) => {
-            log::error!("{act_err:?}");
-            Err(Error::UpdateFailed)
-        }
-    }
+        },
+        Error::UpdateFailed
+    ))
 }
 
 #[derive(actix::Message)]
-#[rtype(result = "Result<Option<ShoppingCartItem>>")]
-pub struct ChangeQuantity {
-    pub shopping_cart_id: ShoppingCartId,
-    pub shopping_cart_item_id: ShoppingCartItemId,
-    pub quantity: Quantity,
-    pub quantity_unit: QuantityUnit,
+#[rtype(result = "Result<Vec<ShoppingCartItem>>")]
+pub struct ModifyCart {
+    pub buyer_id: AccountId,
+    pub items: Vec<ModifyItem>,
 }
 
-cart_async_handler!(ChangeQuantity, change_quantity, Option<ShoppingCartItem>);
+cart_async_handler!(ModifyCart, modify_cart, Vec<ShoppingCartItem>);
 
-pub(crate) async fn change_quantity(
-    msg: ChangeQuantity,
-    db: actix::Addr<Database>,
-) -> Result<Option<ShoppingCartItem>> {
-    if **msg.quantity == 0 {
-        return remove_product(
-            RemoveProduct {
-                shopping_cart_id: msg.shopping_cart_id,
-                shopping_cart_item_id: msg.shopping_cart_item_id,
-            },
-            db,
-        )
-        .await;
-    }
-    let item: ShoppingCartItem = query_db!(
+async fn modify_cart(msg: ModifyCart, db: actix::Addr<Database>) -> Result<Vec<ShoppingCartItem>> {
+    let _cart = query_db!(
         db,
-        database_manager::FindShoppingCartItem {
-            id: msg.shopping_cart_item_id,
+        database_manager::EnsureActiveShoppingCart {
+            buyer_id: msg.buyer_id,
         },
-        Error::NotExists(msg.shopping_cart_item_id)
+        Error::ShoppingCartFailed
+    );
+    let mut carts: Vec<model::ShoppingCart> = query_db!(
+        db,
+        database_manager::AccountShoppingCarts {
+            account_id: msg.buyer_id,
+            state: Some(ShoppingCartState::Active),
+        },
+        passthrough Error::Db,
+        Error::CartNotAvailable
+    );
+    let cart = if carts.is_empty() {
+        return Err(Error::CartNotAvailable);
+    } else {
+        carts.remove(0)
+    };
+
+    let existing =
+        msg.items
+            .iter()
+            .fold(HashSet::with_capacity(msg.items.len()), |mut agg, item| {
+                agg.insert(item.product_id);
+                agg
+            });
+
+    let mut items: Vec<model::ShoppingCartItem> = query_db!(
+        db,
+        database_manager::CartItems {
+            shopping_cart_id: cart.id
+        },
+        Error::CantModifyCart
     );
 
-    Ok(Some(query_db!(
-        db,
-        database_manager::UpdateShoppingCartItem {
-            id: msg.shopping_cart_item_id,
-            product_id: item.product_id,
-            shopping_cart_id: item.shopping_cart_id,
-            quantity: msg.quantity,
-            quantity_unit: msg.quantity_unit,
-        },
-        Error::ChangeQuantity
-    )))
+    for item in items.drain_filter(|item| !existing.contains(&item.product_id)) {
+        query_db!(
+            db,
+            database_manager::RemoveCartItem {
+                shopping_cart_id: cart.id,
+                shopping_cart_item_id: Some(item.id),
+                product_id: None,
+            },
+            Error::CantModifyCart
+        );
+    }
+
+    let mut out = Vec::with_capacity(items.len());
+
+    for ShoppingCartItem {
+        id: _,
+        product_id,
+        shopping_cart_id: _,
+        quantity,
+        quantity_unit,
+    } in items
+    {
+        if let Some(item) = modify_item(
+            ModifyItem {
+                buyer_id: msg.buyer_id,
+                product_id,
+                quantity,
+                quantity_unit,
+            },
+            db.clone(),
+        )
+        .await?
+        {
+            out.push(item);
+        }
+    }
+
+    Ok(out)
 }
diff --git a/actors/database_manager/src/shopping_cart_items.rs b/actors/database_manager/src/shopping_cart_items.rs
index d8b6377..2b4b3bd 100644
--- a/actors/database_manager/src/shopping_cart_items.rs
+++ b/actors/database_manager/src/shopping_cart_items.rs
@@ -190,6 +190,38 @@ RETURNING id, product_id, shopping_cart_id, quantity, quantity_unit
     })
 }
 
+#[derive(actix::Message)]
+#[rtype(result = "Result<Option<ShoppingCartItem>>")]
+pub struct DeleteShoppingCartItem {
+    pub id: ShoppingCartItemId,
+}
+
+db_async_handler!(
+    DeleteShoppingCartItem,
+    delete_shopping_cart_item,
+    Option<ShoppingCartItem>
+);
+
+pub(crate) async fn delete_shopping_cart_item(
+    msg: DeleteShoppingCartItem,
+    db: PgPool,
+) -> Result<Option<ShoppingCartItem>> {
+    sqlx::query_as(
+        r#"
+DELETE FROM shopping_cart_items 
+WHERE id = $1
+RETURNING id, product_id, shopping_cart_id, quantity, quantity_unit
+    "#,
+    )
+    .bind(msg.id)
+    .fetch_optional(&db)
+    .await
+    .map_err(|e| {
+        log::error!("{e:?}");
+        super::Error::ShoppingCartItem(Error::CantUpdate(msg.id))
+    })
+}
+
 #[derive(actix::Message)]
 #[rtype(result = "Result<ShoppingCartItem>")]
 pub struct FindShoppingCartItem {
diff --git a/api/src/routes/mod.rs b/api/src/routes/mod.rs
index 4509051..b11b41d 100644
--- a/api/src/routes/mod.rs
+++ b/api/src/routes/mod.rs
@@ -110,7 +110,7 @@ impl Responder for Error {
                     }),
             },
             Error::Public(PublicError::ApiV1(
-                V1Error::AddItem | V1Error::RemoveItem | V1Error::AddOrder,
+                V1Error::ModifyItem | V1Error::RemoveItem | V1Error::AddOrder,
             )) => HttpResponse::BadRequest()
                 .content_type("application/json")
                 .json(Failure {
diff --git a/api/src/routes/public/api_v1.rs b/api/src/routes/public/api_v1.rs
index 0e1c990..d8b338b 100644
--- a/api/src/routes/public/api_v1.rs
+++ b/api/src/routes/public/api_v1.rs
@@ -17,7 +17,7 @@ pub enum Error {
     #[error("Failed to remove shopping cart item")]
     RemoveItem,
     #[error("Failed to add shopping cart item")]
-    AddItem,
+    ModifyItem,
 
     #[error("Failed to create order")]
     AddOrder,
diff --git a/api/src/routes/public/api_v1/restricted.rs b/api/src/routes/public/api_v1/restricted.rs
index 376fbc2..31715fa 100644
--- a/api/src/routes/public/api_v1/restricted.rs
+++ b/api/src/routes/public/api_v1/restricted.rs
@@ -93,11 +93,11 @@ async fn update_cart_item(
     cart: Data<Addr<CartManager>>,
     tm: Data<Addr<TokenManager>>,
     credentials: BearerAuth,
-    Json(payload): Json<api::CreateItemInput>,
-) -> Result<Json<api::CreateItemOutput>> {
+    Json(payload): Json<api::UpdateItemInput>,
+) -> Result<Json<api::UpdateItemOutput>> {
     let token = credentials.require_user(tm.into_inner()).await?;
 
-    let item: model::ShoppingCartItem = query_cart!(
+    let item: Option<model::ShoppingCartItem> = query_cart!(
         cart,
         cart_manager::ModifyItem {
             buyer_id: token.account_id(),
@@ -105,13 +105,55 @@ async fn update_cart_item(
             quantity: payload.quantity,
             quantity_unit: payload.quantity_unit,
         },
-        routes::Error::Public(super::Error::AddItem.into()),
+        routes::Error::Public(super::Error::ModifyItem.into()),
         routes::Error::Public(PublicError::DatabaseConnection)
     );
 
-    Ok(Json(api::CreateItemOutput {
-        success: true,
-        shopping_cart_item: item.into(),
+    match item {
+        Some(item) => Ok(Json(api::UpdateItemOutput {
+            shopping_cart_item: item.into(),
+        })),
+        None => Err(routes::Error::Public(super::Error::ModifyItem.into())),
+    }
+}
+
+#[put("/shopping-cart")]
+async fn update_cart(
+    cart: Data<Addr<CartManager>>,
+    tm: Data<Addr<TokenManager>>,
+    credentials: BearerAuth,
+    Json(payload): Json<api::UpdateCartInput>,
+) -> Result<Json<api::UpdateCartOutput>> {
+    let token = credentials.require_user(tm.into_inner()).await?;
+    let items = payload
+        .items
+        .into_iter()
+        .map(
+            |model::api::UpdateItemInput {
+                 product_id,
+                 quantity,
+                 quantity_unit,
+             }| cart_manager::ModifyItem {
+                buyer_id: token.account_id(),
+                product_id,
+                quantity,
+                quantity_unit,
+            },
+        )
+        .collect();
+
+    let items: Vec<model::ShoppingCartItem> = query_cart!(
+        cart,
+        cart_manager::ModifyCart {
+            buyer_id: token.account_id(),
+            items
+        },
+        routes::Error::Public(super::Error::ModifyItem.into()),
+        routes::Error::Public(PublicError::DatabaseConnection)
+    );
+
+    Ok(Json(api::UpdateCartOutput {
+        items: items.into_iter().map(Into::into).collect(),
     }))
 }
 
@@ -229,6 +271,8 @@ pub(crate) fn configure(config: &mut ServiceConfig) {
         .service(shopping_cart)
         .service(delete_cart_item)
         .service(create_order)
+        .service(update_cart)
+        .service(update_cart_item)
         .service(me)
         .service(verify_token)
         .service(refresh_token);
diff --git a/shared/model/src/api.rs b/shared/model/src/api.rs
index a8422e8..443cf56 100644
--- a/shared/model/src/api.rs
+++ b/shared/model/src/api.rs
@@ -366,18 +366,27 @@ pub struct DeleteItemOutput {
 }
 
 #[derive(Serialize, Deserialize, Debug)]
-pub struct CreateItemInput {
+pub struct UpdateItemInput {
     pub product_id: ProductId,
     pub quantity: Quantity,
     pub quantity_unit: QuantityUnit,
 }
 
 #[derive(Serialize, Deserialize, Debug)]
-pub struct CreateItemOutput {
-    pub success: bool,
+pub struct UpdateItemOutput {
     pub shopping_cart_item: ShoppingCartItem,
 }
 
+#[derive(Serialize, Deserialize, Debug)]
+pub struct UpdateCartInput {
+    pub items: Vec<UpdateItemInput>,
+}
+
+#[derive(Serialize, Deserialize, Debug)]
+pub struct UpdateCartOutput {
+    pub items: Vec<ShoppingCartItem>,
+}
+
 #[derive(Serialize, Deserialize, Debug)]
 pub struct SearchRequest {
     /// Match string
diff --git a/web/src/api/public.rs b/web/src/api/public.rs
index bd2bebc..15fd33c 100644
--- a/web/src/api/public.rs
+++ b/web/src/api/public.rs
@@ -2,6 +2,7 @@ use model::{AccessTokenString, RefreshTokenString};
 use seed::fetch::{Header, Method, Request};
 
 use crate::api::perform;
+use crate::NetRes;
 
 pub async fn config() -> super::NetRes<model::api::Config> {
     perform(Request::new("/config").method(Method::Get)).await
@@ -65,3 +66,54 @@ pub async fn sign_up(
     )
     .await
 }
+
+pub async fn update_cart_item(
+    access_token: &AccessTokenString,
+    product_id: model::ProductId,
+    quantity: model::Quantity,
+    quantity_unit: model::QuantityUnit,
+) -> NetRes<model::api::UpdateItemOutput> {
+    let input = model::api::UpdateItemInput {
+        product_id,
+        quantity,
+        quantity_unit,
+    };
+    perform(
+        Request::new("/api/v1/shopping-cart-item")
+            .method(Method::Put)
+            .header(Header::bearer(access_token.as_str()))
+            .json(&input)
+            .map_err(crate::api::NetRes::Http)?,
+    )
+    .await
+}
+
+pub async fn update_cart(
+    access_token: AccessTokenString,
+    items: Vec<crate::shopping_cart::Item>,
+) -> NetRes<model::api::UpdateCartOutput> {
+    let input = model::api::UpdateCartInput {
+        items: items
+            .into_iter()
+            .map(
+                |crate::shopping_cart::Item {
+                     product_id,
+                     quantity,
+                     quantity_unit,
+                 }| model::api::UpdateItemInput {
+                    product_id,
+                    quantity,
+                    quantity_unit,
+                },
+            )
+            .collect(),
+    };
+    perform(
+        Request::new("/api/v1/shopping-cart")
+            .method(Method::Put)
+            .header(Header::bearer(access_token.as_str()))
+            .json(&input)
+            .map_err(crate::api::NetRes::Http)?,
+    )
+    .await
+}
diff --git a/web/src/lib.rs b/web/src/lib.rs
index eeb4cd7..258e06b 100644
--- a/web/src/lib.rs
+++ b/web/src/lib.rs
@@ -169,13 +169,6 @@ fn update(msg: Msg, model: &mut Model, orders: &mut impl Orders<Msg>) {
             let page = fetch_page!(public model, SignIn);
             pages::public::sign_in::update(msg, page, &mut orders.proxy(Into::into))
         }
-        Msg::Public(pages::public::PublicMsg::SignUp(
-            pages::public::sign_up::RegisterMsg::AccountCreated(res),
-        )) => {
-            orders
-                .skip()
-                .send_msg(Msg::Session(SessionMsg::TokenRefreshed(res)));
-        }
         Msg::Public(pages::public::PublicMsg::SignUp(msg)) => {
             let page = fetch_page!(public model, SignUp);
             pages::public::sign_up::update(msg, page, &mut orders.proxy(Into::into))
diff --git a/web/src/pages/public/sign_in.rs b/web/src/pages/public/sign_in.rs
index ac576af..5167e23 100644
--- a/web/src/pages/public/sign_in.rs
+++ b/web/src/pages/public/sign_in.rs
@@ -62,7 +62,6 @@ pub fn view(model: &crate::Model, page: &SignInPage) -> Node<crate::Msg> {
     ]
     .map_msg(Into::into);
 
-    // crate::shared::view::public_navbar(model),
     div![super::layout::view(model, content, None)]
 }
 
diff --git a/web/src/pages/public/sign_up.rs b/web/src/pages/public/sign_up.rs
index 87cf44d..d9040a9 100644
--- a/web/src/pages/public/sign_up.rs
+++ b/web/src/pages/public/sign_up.rs
@@ -1,10 +1,11 @@
 use std::str::FromStr;
 
-use model::{Email, Login, Password, PasswordConfirmation};
 use seed::prelude::*;
 use seed::*;
 
 use crate::pages::Urls;
+use crate::shopping_cart::CartMsg;
+use crate::SessionMsg;
 
 #[derive(Debug)]
 pub enum RegisterMsg {
@@ -38,18 +39,18 @@ pub fn page_changed(_url: Url, _model: &mut SignUpPage) {}
 pub fn update(msg: RegisterMsg, model: &mut SignUpPage, orders: &mut impl Orders<crate::Msg>) {
     match msg {
         RegisterMsg::LoginChanged(value) => {
-            model.login = Login::new(value);
+            model.login = model::Login::new(value);
         }
         RegisterMsg::EmailChanged(value) => {
-            if let Ok(email) = Email::from_str(&value) {
+            if let Ok(email) = model::Email::from_str(&value) {
                 model.email = email;
             }
         }
         RegisterMsg::PasswordChanged(value) => {
-            model.password = Password::new(value);
+            model.password = model::Password::new(value);
         }
         RegisterMsg::PasswordConfirmationChanged(value) => {
-            model.password_confirmation = PasswordConfirmation::new(value);
+            model.password_confirmation = model::PasswordConfirmation::new(value);
         }
         RegisterMsg::Submit => {
             let email = model.email.clone();
@@ -72,7 +73,12 @@ pub fn update(msg: RegisterMsg, model: &mut SignUpPage, orders: &mut impl Orders
                 )
             });
         }
-        RegisterMsg::AccountCreated(_) => {}
+        RegisterMsg::AccountCreated(res) => {
+            orders
+                .skip()
+                .send_msg(crate::Msg::Session(SessionMsg::TokenRefreshed(res)))
+                .send_msg(crate::Msg::Cart(CartMsg::Sync));
+        }
     }
 }
 
diff --git a/web/src/shopping_cart.rs b/web/src/shopping_cart.rs
index bc859e5..428c882 100644
--- a/web/src/shopping_cart.rs
+++ b/web/src/shopping_cart.rs
@@ -2,7 +2,8 @@ use model::{ProductId, Quantity, QuantityUnit};
 use seed::prelude::*;
 use serde::{Deserialize, Serialize};
 
-use crate::{Model, Msg};
+use crate::shared::notification::NotificationMsg;
+use crate::{Model, Msg, NetRes};
 
 #[derive(Debug)]
 pub enum CartMsg {
@@ -19,6 +20,9 @@ pub enum CartMsg {
     Remove(ProductId),
     Hover,
     Leave,
+    /// Send current non-empty cart to server
+    Sync,
+    SyncResult(NetRes<model::api::UpdateCartOutput>),
 }
 
 impl From<CartMsg> for Msg {
@@ -29,7 +33,7 @@ impl From<CartMsg> for Msg {
 
 pub type Items = indexmap::IndexMap<ProductId, Item>;
 
-#[derive(Debug, Serialize, Deserialize)]
+#[derive(Debug, Copy, Clone, Serialize, Deserialize)]
 pub struct Item {
     pub product_id: ProductId,
     pub quantity: Quantity,
@@ -48,7 +52,7 @@ pub fn init(model: &mut Model, _orders: &mut impl Orders<Msg>) {
     model.cart = load_local();
 }
 
-pub fn update(msg: CartMsg, model: &mut Model, _orders: &mut impl Orders<Msg>) {
+pub fn update(msg: CartMsg, model: &mut Model, orders: &mut impl Orders<Msg>) {
     match msg {
         CartMsg::AddItem {
             quantity,
@@ -96,6 +100,27 @@ pub fn update(msg: CartMsg, model: &mut Model, _orders: &mut impl Orders<Msg>) {
         CartMsg::Leave => {
             model.cart.hover = false;
         }
+        CartMsg::Sync => {
+            if let Some(access_token) = model.shared.access_token.as_ref().cloned() {
+                let items: Vec<Item> = model.cart.items.values().map(Clone::clone).collect();
+                orders.perform_cmd(async {
+                    crate::Msg::from(CartMsg::SyncResult(
+                        crate::api::public::update_cart(access_token, items).await,
+                    ))
+                });
+            }
+        }
+        CartMsg::SyncResult(NetRes::Success(cart)) => {
+            // cart.items
+        }
+        CartMsg::SyncResult(NetRes::Error(failure)) => {
+            for msg in failure.errors {
+                orders.send_msg(NotificationMsg::Error(msg).into());
+            }
+        }
+        CartMsg::SyncResult(NetRes::Http(_cart)) => {
+            orders.send_msg(NotificationMsg::Error("Unable to sync cart".into()).into());
+        }
     }
 }