diff --git a/mediarepo-daemon/mediarepo-logic/src/dao/repo/mod.rs b/mediarepo-daemon/mediarepo-logic/src/dao/repo/mod.rs
index e0713ab..a329f2a 100644
--- a/mediarepo-daemon/mediarepo-logic/src/dao/repo/mod.rs
+++ b/mediarepo-daemon/mediarepo-logic/src/dao/repo/mod.rs
@@ -16,6 +16,7 @@ use mediarepo_core::utils::parse_namespace_and_tag;
 use mediarepo_database::get_database;
 use mediarepo_database::queries::analysis::{get_all_counts, Counts};
 
+use crate::dao::tag::by_name::TagByNameQuery;
 use crate::dao::{DaoContext, DaoProvider};
 use crate::namespace::Namespace;
 use crate::tag::Tag;
@@ -66,78 +67,12 @@ impl Repo {
         &self.db
     }
 
-    /// Converts a list of tag names to tag ids
-    #[tracing::instrument(level = "debug", skip(self))]
-    pub async fn tag_names_to_ids(&self, tags: Vec<String>) -> RepoResult<HashMap<String, i64>> {
-        let parsed_tags = tags
-            .iter()
-            .map(|tag| parse_namespace_and_tag(tag.clone()))
-            .unique()
-            .collect();
-
-        let db_tags = self.tags_by_names(parsed_tags).await?;
-        let tag_map: HashMap<String, i64> =
-            HashMap::from_iter(db_tags.into_iter().map(|t| (t.normalized_name(), t.id())));
-
-        Ok(tag_map)
-    }
-
-    /// Finds all tags by name
-    #[tracing::instrument(level = "debug", skip(self))]
-    pub async fn tags_by_names(&self, tags: Vec<(Option<String>, String)>) -> RepoResult<Vec<Tag>> {
-        Tag::all_by_name(self.db.clone(), tags).await
-    }
-
     /// Finds all tags that are assigned to the given list of hashes
     #[tracing::instrument(level = "debug", skip_all)]
     pub async fn find_tags_for_file_identifiers(&self, cds: Vec<Vec<u8>>) -> RepoResult<Vec<Tag>> {
         Tag::for_cd_list(self.db.clone(), cds).await
     }
 
-    /// Adds all tags that are not in the database to the database and returns the ones already existing as well
-    #[tracing::instrument(level = "debug", skip_all)]
-    pub async fn add_all_tags(&self, tags: Vec<(Option<String>, String)>) -> RepoResult<Vec<Tag>> {
-        let mut tags_to_add = tags.into_iter().unique().collect_vec();
-        let mut namespaces_to_add = tags_to_add
-            .iter()
-            .filter_map(|(namespace, _)| namespace.clone())
-            .unique()
-            .collect_vec();
-
-        let mut existing_namespaces =
-            Namespace::all_by_name(self.db.clone(), namespaces_to_add.clone()).await?;
-        {
-            let existing_namespaces_set = existing_namespaces
-                .iter()
-                .map(|n| n.name().clone())
-                .collect::<HashSet<String>>();
-            namespaces_to_add.retain(|namespace| !existing_namespaces_set.contains(namespace));
-        }
-        existing_namespaces
-            .append(&mut Namespace::add_all(self.db.clone(), namespaces_to_add).await?);
-
-        let mut existing_tags = self.tags_by_names(tags_to_add.clone()).await?;
-        {
-            let existing_tags_set = existing_tags
-                .iter()
-                .map(|t| (t.namespace().map(|n| n.name().clone()), t.name().clone()))
-                .collect::<HashSet<(Option<String>, String)>>();
-
-            tags_to_add.retain(|t| !existing_tags_set.contains(t));
-        }
-        let namespace_map = existing_namespaces
-            .into_iter()
-            .map(|namespace| (namespace.name().clone(), namespace.id()))
-            .collect::<HashMap<String, i64>>();
-        let tags_to_add = tags_to_add
-            .into_iter()
-            .map(|(nsp, name)| (nsp.and_then(|n| namespace_map.get(&n)).map(|i| *i), name))
-            .collect_vec();
-        existing_tags.append(&mut Tag::add_all(self.db.clone(), tags_to_add).await?);
-
-        Ok(existing_tags)
-    }
-
     /// Adds or finds a tag
     #[tracing::instrument(level = "debug", skip(self))]
     pub async fn add_or_find_tag<S: ToString + Debug>(&self, tag: S) -> RepoResult<Tag> {
diff --git a/mediarepo-daemon/mediarepo-logic/src/dao/tag/add.rs b/mediarepo-daemon/mediarepo-logic/src/dao/tag/add.rs
new file mode 100644
index 0000000..f52da09
--- /dev/null
+++ b/mediarepo-daemon/mediarepo-logic/src/dao/tag/add.rs
@@ -0,0 +1,120 @@
+use crate::dao::tag::{map_tag_dto, TagDao};
+use crate::dto::{AddTagDto, NamespaceDto, TagDto};
+use mediarepo_core::error::RepoResult;
+use mediarepo_database::entities::{namespace, tag};
+use sea_orm::prelude::*;
+use sea_orm::ActiveValue::Set;
+use sea_orm::{Condition, ConnectionTrait, DatabaseTransaction};
+use std::collections::HashMap;
+use std::iter::FromIterator;
+
+impl TagDao {
+    #[tracing::instrument(level = "debug", skip(self))]
+    pub async fn add_all(&self, mut tags: Vec<AddTagDto>) -> RepoResult<Vec<TagDto>> {
+        let namespaces = tags.iter().filter_map(|t| t.namespace.clone()).collect();
+        let trx = self.ctx.db.begin().await?;
+        let existing_tags = tags_by_name(&trx, tags.clone()).await?;
+
+        if existing_tags.len() == tags.len() {
+            return Ok(existing_tags);
+        }
+        let existing_tag_map: HashMap<String, TagDto> =
+            HashMap::from_iter(existing_tags.into_iter().map(|t| (t.normalized_name(), t)));
+
+        let namespace_map = add_or_get_all_namespaces(&trx, namespaces).await?;
+        tags.retain(|dto| !existing_tag_map.contains_key(&dto.normalized_name()));
+        let tag_models: Vec<tag::ActiveModel> = tags
+            .iter()
+            .map(|t| tag::ActiveModel {
+                name: Set(t.name.to_owned()),
+                namespace_id: Set(t
+                    .namespace
+                    .as_ref()
+                    .and_then(|n| namespace_map.get(n))
+                    .map(|n| n.id())),
+                ..Default::default()
+            })
+            .collect();
+        tag::Entity::insert_many(tag_models).exec(&trx).await?;
+        let mut tag_dtos = tags_by_name(&trx, tags).await?;
+        trx.commit().await?;
+        tag_dtos.append(&mut existing_tag_map.into_iter().map(|(_, dto)| dto).collect());
+
+        Ok(tag_dtos)
+    }
+}
+
+async fn add_or_get_all_namespaces(
+    trx: &DatabaseTransaction,
+    mut namespaces: Vec<String>,
+) -> RepoResult<HashMap<String, NamespaceDto>> {
+    let existing_namespaces = namespaces_by_name(trx, namespaces.clone()).await?;
+    let mut namespace_map = HashMap::from_iter(
+        existing_namespaces
+            .into_iter()
+            .map(|nsp| (nsp.name().to_owned(), nsp)),
+    );
+    if namespaces.len() == namespace_map.len() {
+        return Ok(namespace_map);
+    }
+    namespaces.retain(|nsp| !namespace_map.contains_key(nsp));
+    let namespace_models: Vec<namespace::ActiveModel> = namespaces
+        .iter()
+        .map(|nsp| namespace::ActiveModel {
+            name: Set(nsp.to_owned()),
+            ..Default::default()
+        })
+        .collect();
+    namespace::Entity::insert_many(namespace_models)
+        .exec(trx)
+        .await?;
+    let additional_namespaces = namespaces_by_name(trx, namespaces.clone()).await?;
+
+    for nsp in additional_namespaces {
+        namespace_map.insert(nsp.name().to_owned(), nsp);
+    }
+
+    Ok(namespace_map)
+}
+
+async fn namespaces_by_name(
+    trx: &DatabaseTransaction,
+    names: Vec<String>,
+) -> RepoResult<Vec<NamespaceDto>> {
+    let namespaces: Vec<NamespaceDto> = namespace::Entity::find()
+        .filter(namespace::Column::Name.is_in(names))
+        .all(trx)
+        .await?
+        .into_iter()
+        .map(NamespaceDto::new)
+        .collect();
+
+    Ok(namespaces)
+}
+
+async fn tags_by_name(trx: &DatabaseTransaction, tags: Vec<AddTagDto>) -> RepoResult<Vec<TagDto>> {
+    let condition = tags
+        .into_iter()
+        .map(build_tag_condition)
+        .fold(Condition::any(), Condition::add);
+    let tags = tag::Entity::find()
+        .find_also_related(namespace::Entity)
+        .filter(condition)
+        .all(trx)
+        .await?
+        .into_iter()
+        .map(map_tag_dto)
+        .collect();
+
+    Ok(tags)
+}
+
+fn build_tag_condition(tag: AddTagDto) -> Condition {
+    if let Some(namespace) = tag.namespace {
+        Condition::all()
+            .add(tag::Column::Name.eq(tag.name))
+            .add(namespace::Column::Name.eq(namespace))
+    } else {
+        Condition::all().add(tag::Column::Name.eq(tag.name))
+    }
+}
diff --git a/mediarepo-daemon/mediarepo-logic/src/dao/tag/by_name.rs b/mediarepo-daemon/mediarepo-logic/src/dao/tag/by_name.rs
new file mode 100644
index 0000000..de7e4c9
--- /dev/null
+++ b/mediarepo-daemon/mediarepo-logic/src/dao/tag/by_name.rs
@@ -0,0 +1,63 @@
+use crate::dao::tag::{map_tag_dto, TagDao};
+use crate::dto::TagDto;
+use mediarepo_core::error::RepoResult;
+use mediarepo_database::entities::{namespace, tag};
+use sea_orm::prelude::*;
+use sea_orm::sea_query::Expr;
+use sea_orm::Condition;
+
+#[derive(Clone, Debug)]
+pub struct TagByNameQuery {
+    pub namespace: Option<String>,
+    pub name: String,
+}
+
+impl TagDao {
+    /// Filters all tags by names
+    /// wildcards are supported
+    #[tracing::instrument(level = "debug", skip(self))]
+    pub async fn all_by_name(&self, names: Vec<TagByNameQuery>) -> RepoResult<Vec<TagDto>> {
+        let mut condition_count = 0;
+        let condition = names
+            .into_iter()
+            .filter_map(name_query_to_condition)
+            .inspect(|_| condition_count += 1)
+            .fold(Condition::any(), Condition::add);
+        if condition_count == 0 {
+            return Ok(vec![]);
+        }
+
+        let tags = tag::Entity::find()
+            .find_also_related(namespace::Entity)
+            .filter(condition)
+            .all(&self.ctx.db)
+            .await?
+            .into_iter()
+            .map(map_tag_dto)
+            .collect();
+
+        Ok(tags)
+    }
+}
+
+fn name_query_to_condition(query: TagByNameQuery) -> Option<Condition> {
+    let TagByNameQuery { namespace, name } = query;
+    let mut condition = Condition::all();
+
+    if !name.ends_with('*') {
+        condition = condition.add(tag::Column::Name.eq(name))
+    } else if name.len() > 1 {
+        condition =
+            condition.add(tag::Column::Name.like(&*format!("{}%", name.trim_end_matches("*"))))
+    } else if namespace.is_none() {
+        return None;
+    }
+
+    condition = if let Some(namespace) = namespace {
+        condition.add(namespace::Column::Name.eq(namespace))
+    } else {
+        condition.add(Expr::tbl(tag::Entity, tag::Column::NamespaceId).is_null())
+    };
+
+    Some(condition)
+}
diff --git a/mediarepo-daemon/mediarepo-logic/src/dao/tag/mod.rs b/mediarepo-daemon/mediarepo-logic/src/dao/tag/mod.rs
index 2f3dfa2..6e08e01 100644
--- a/mediarepo-daemon/mediarepo-logic/src/dao/tag/mod.rs
+++ b/mediarepo-daemon/mediarepo-logic/src/dao/tag/mod.rs
@@ -1,13 +1,20 @@
 use sea_orm::prelude::*;
 use sea_orm::JoinType;
 use sea_orm::QuerySelect;
+use std::collections::HashMap;
+use std::iter::FromIterator;
 
 use mediarepo_core::error::RepoResult;
+use mediarepo_core::mediarepo_api::types::filtering::TagQuery;
+use mediarepo_core::utils::parse_namespace_and_tag;
 use mediarepo_database::entities::{content_descriptor, content_descriptor_tag, namespace, tag};
 
+use crate::dao::tag::by_name::TagByNameQuery;
 use crate::dao::{DaoContext, DaoProvider};
 use crate::dto::{NamespaceDto, TagDto};
 
+pub mod add;
+pub mod by_name;
 pub mod mappings;
 
 pub struct TagDao {
@@ -71,6 +78,26 @@ impl TagDao {
 
         Ok(tags)
     }
+
+    /// Returns a map mapping tag names to ids
+    #[tracing::instrument(level = "debug", skip(self))]
+    pub async fn normalized_tags_to_ids(
+        &self,
+        names: Vec<String>,
+    ) -> RepoResult<HashMap<String, i64>> {
+        let queries = names
+            .into_iter()
+            .map(parse_namespace_and_tag)
+            .map(|(namespace, name)| TagByNameQuery { namespace, name })
+            .collect();
+        let tags = self.all_by_name(queries).await?;
+        let tag_map = HashMap::from_iter(
+            tags.into_iter()
+                .map(|tag| (tag.normalized_name(), tag.id())),
+        );
+
+        Ok(tag_map)
+    }
 }
 
 fn map_tag_dto(result: (tag::Model, Option<namespace::Model>)) -> TagDto {
diff --git a/mediarepo-daemon/mediarepo-logic/src/dto/tag.rs b/mediarepo-daemon/mediarepo-logic/src/dto/tag.rs
index df59a5f..d45dcd4 100644
--- a/mediarepo-daemon/mediarepo-logic/src/dto/tag.rs
+++ b/mediarepo-daemon/mediarepo-logic/src/dto/tag.rs
@@ -28,4 +28,35 @@ impl TagDto {
     pub fn namespace(&self) -> Option<&NamespaceDto> {
         self.namespace.as_ref()
     }
+
+    /// Returns the normalized name of the tag (namespace:tag)
+    pub fn normalized_name(&self) -> String {
+        if let Some(namespace) = &self.namespace {
+            format!("{}:{}", namespace.name(), self.name())
+        } else {
+            self.name().to_owned()
+        }
+    }
+}
+
+#[derive(Clone, Debug)]
+pub struct AddTagDto {
+    pub namespace: Option<String>,
+    pub name: String,
+}
+
+impl AddTagDto {
+    pub fn from_tuple(tuple: (Option<String>, String)) -> Self {
+        let (namespace, name) = tuple;
+        Self { namespace, name }
+    }
+
+    /// Returns the normalized name of the tag (namespace:tag)
+    pub fn normalized_name(&self) -> String {
+        if let Some(namespace) = &self.namespace {
+            format!("{}:{}", namespace, &self.name)
+        } else {
+            self.name.to_owned()
+        }
+    }
 }
diff --git a/mediarepo-daemon/mediarepo-socket/src/namespaces/files/mod.rs b/mediarepo-daemon/mediarepo-socket/src/namespaces/files/mod.rs
index c379b58..644a6f0 100644
--- a/mediarepo-daemon/mediarepo-socket/src/namespaces/files/mod.rs
+++ b/mediarepo-daemon/mediarepo-socket/src/namespaces/files/mod.rs
@@ -15,7 +15,7 @@ use mediarepo_core::mediarepo_api::types::identifier::FileIdentifier;
 use mediarepo_core::thumbnailer::ThumbnailSize;
 use mediarepo_core::utils::parse_namespace_and_tag;
 use mediarepo_logic::dao::DaoProvider;
-use mediarepo_logic::dto::{AddFileDto, UpdateFileDto, UpdateFileMetadataDto};
+use mediarepo_logic::dto::{AddFileDto, AddTagDto, UpdateFileDto, UpdateFileMetadataDto};
 
 use crate::from_model::FromModel;
 use crate::namespaces::files::searching::find_files_for_filters;
@@ -171,7 +171,13 @@ impl FilesNamespace {
         };
 
         let tags = repo
-            .add_all_tags(tags.into_iter().map(parse_namespace_and_tag).collect())
+            .tag()
+            .add_all(
+                tags.into_iter()
+                    .map(parse_namespace_and_tag)
+                    .map(AddTagDto::from_tuple)
+                    .collect(),
+            )
             .await?;
         let tag_ids: Vec<i64> = tags.into_iter().map(|t| t.id()).unique().collect();
         repo.tag()
diff --git a/mediarepo-daemon/mediarepo-socket/src/namespaces/files/searching.rs b/mediarepo-daemon/mediarepo-socket/src/namespaces/files/searching.rs
index ab6d66b..fb78e4d 100644
--- a/mediarepo-daemon/mediarepo-socket/src/namespaces/files/searching.rs
+++ b/mediarepo-daemon/mediarepo-socket/src/namespaces/files/searching.rs
@@ -6,10 +6,10 @@ use mediarepo_core::mediarepo_api::types::files::FileStatus as ApiFileStatus;
 use mediarepo_core::mediarepo_api::types::filtering::{
     FilterExpression, FilterQuery, PropertyQuery, TagQuery, ValueComparator,
 };
-use mediarepo_logic::dao::DaoProvider;
-use mediarepo_logic::dao::file::find::{FilterFileProperty, FilterProperty, OrderingComparator};
 use mediarepo_logic::dao::file::find::NegatableComparator::{Is, IsNot};
+use mediarepo_logic::dao::file::find::{FilterFileProperty, FilterProperty, OrderingComparator};
 use mediarepo_logic::dao::repo::Repo;
+use mediarepo_logic::dao::DaoProvider;
 use mediarepo_logic::dto::{FileDto, FileStatus};
 
 #[tracing::instrument(level = "debug", skip(repo))]
@@ -18,7 +18,7 @@ pub async fn find_files_for_filters(
     expressions: Vec<FilterExpression>,
 ) -> RepoResult<Vec<FileDto>> {
     let tag_names = get_tag_names_from_expressions(&expressions);
-    let tag_id_map = repo.tag_names_to_ids(tag_names).await?;
+    let tag_id_map = repo.tag().normalized_tags_to_ids(tag_names).await?;
     let filters = build_filters_from_expressions(expressions, &tag_id_map);
 
     repo.file().find(filters).await