diff --git a/mediarepo-api/Cargo.toml b/mediarepo-api/Cargo.toml
index 7876ed4..928d3cc 100644
--- a/mediarepo-api/Cargo.toml
+++ b/mediarepo-api/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "mediarepo-api"
-version = "0.25.0"
+version = "0.26.0"
 edition = "2018"
 license = "gpl-3"
 
diff --git a/mediarepo-api/src/client_api/file.rs b/mediarepo-api/src/client_api/file.rs
index 7ed1369..1ef4a2f 100644
--- a/mediarepo-api/src/client_api/file.rs
+++ b/mediarepo-api/src/client_api/file.rs
@@ -2,9 +2,10 @@ use crate::client_api::error::ApiResult;
 use crate::client_api::IPCApi;
 use crate::types::files::{
     AddFileRequestHeader, FileBasicDataResponse, FileMetadataResponse, FileOSMetadata,
-    FilterExpression, FindFilesRequest, GetFileThumbnailOfSizeRequest, GetFileThumbnailsRequest,
-    ReadFileRequest, SortKey, ThumbnailMetadataResponse, UpdateFileNameRequest,
+    GetFileThumbnailOfSizeRequest, GetFileThumbnailsRequest, ReadFileRequest,
+    ThumbnailMetadataResponse, UpdateFileNameRequest,
 };
+use crate::types::filtering::{FilterExpression, FindFilesRequest, SortKey};
 use crate::types::identifier::FileIdentifier;
 use async_trait::async_trait;
 use bromine::context::{PoolGuard, PooledContext};
diff --git a/mediarepo-api/src/tauri_plugin/commands/file.rs b/mediarepo-api/src/tauri_plugin/commands/file.rs
index 697f429..61ae057 100644
--- a/mediarepo-api/src/tauri_plugin/commands/file.rs
+++ b/mediarepo-api/src/tauri_plugin/commands/file.rs
@@ -2,9 +2,9 @@ use crate::tauri_plugin::commands::{ApiAccess, BufferAccess};
 use crate::tauri_plugin::error::PluginResult;
 use crate::tauri_plugin::utils::system_time_to_naive_date_time;
 use crate::types::files::{
-    FileBasicDataResponse, FileMetadataResponse, FileOSMetadata, FilterExpression, SortKey,
-    ThumbnailMetadataResponse,
+    FileBasicDataResponse, FileMetadataResponse, FileOSMetadata, ThumbnailMetadataResponse,
 };
+use crate::types::filtering::{FilterExpression, SortKey};
 use crate::types::identifier::FileIdentifier;
 use serde::{Deserialize, Serialize};
 use std::path::PathBuf;
diff --git a/mediarepo-api/src/test/test_type_serialization.rs b/mediarepo-api/src/test/test_type_serialization.rs
index d183d46..56ecb83 100644
--- a/mediarepo-api/src/test/test_type_serialization.rs
+++ b/mediarepo-api/src/test/test_type_serialization.rs
@@ -1,9 +1,11 @@
-use crate::types::files::{
-    FilterExpression, GetFileThumbnailOfSizeRequest, SortDirection, SortKey, TagQuery,
+use crate::types::files::GetFileThumbnailOfSizeRequest;
+use crate::types::filtering::{
+    FilterExpression, SortDirection, SortKey, TagQuery, ValueComparator,
 };
 use crate::types::identifier::FileIdentifier;
 use bromine::payload::DynamicSerializer;
 use bromine::prelude::IPCResult;
+use chrono::NaiveDateTime;
 use serde::de::DeserializeOwned;
 use serde::Serialize;
 
@@ -45,6 +47,15 @@ fn it_serializes_sort_keys() {
     test_serialization(SortKey::FileName(SortDirection::Descending)).unwrap();
 }
 
+#[test]
+fn it_serializes_value_comparators() {
+    test_serialization(ValueComparator::Between((
+        NaiveDateTime::from_timestamp(100, 0),
+        NaiveDateTime::from_timestamp(100, 10),
+    )))
+    .unwrap();
+}
+
 fn test_serialization<T: Serialize + DeserializeOwned>(data: T) -> IPCResult<()> {
     let serializer = DynamicSerializer::first_available();
     let bytes = serializer.serialize(data)?;
diff --git a/mediarepo-api/src/types/files.rs b/mediarepo-api/src/types/files.rs
index 3a5c480..7a67630 100644
--- a/mediarepo-api/src/types/files.rs
+++ b/mediarepo-api/src/types/files.rs
@@ -1,6 +1,7 @@
 use crate::types::identifier::FileIdentifier;
 use chrono::NaiveDateTime;
 use serde::{Deserialize, Serialize};
+use std::fmt::Debug;
 
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct ReadFileRequest {
@@ -29,50 +30,6 @@ pub struct GetFilesTagsRequest {
     pub cds: Vec<String>,
 }
 
-#[derive(Clone, Debug, Serialize, Deserialize)]
-pub struct FindFilesRequest {
-    pub filters: Vec<FilterExpression>,
-    pub sort_expression: Vec<SortKey>,
-}
-
-#[derive(Clone, Debug, Serialize, Deserialize)]
-pub enum FilterExpression {
-    OrExpression(Vec<TagQuery>),
-    Query(TagQuery),
-}
-
-#[derive(Clone, Debug, Serialize, Deserialize)]
-pub struct TagQuery {
-    pub negate: bool,
-    pub tag: String,
-}
-
-#[derive(Clone, Debug, Serialize, Deserialize)]
-pub enum SortKey {
-    Namespace(SortNamespace),
-    FileName(SortDirection),
-    FileSize(SortDirection),
-    FileImportedTime(SortDirection),
-    FileCreatedTime(SortDirection),
-    FileChangeTime(SortDirection),
-    FileType(SortDirection),
-    NumTags(SortDirection),
-}
-
-#[derive(Clone, Debug, Serialize, Deserialize)]
-pub struct SortNamespace {
-    pub name: String,
-    pub direction: SortDirection,
-}
-
-#[derive(Clone, Debug, Serialize, Deserialize, Ord, PartialOrd, PartialEq)]
-pub enum SortDirection {
-    Ascending,
-    Descending,
-}
-
-impl Eq for SortDirection {}
-
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct FileBasicDataResponse {
     pub id: i64,
diff --git a/mediarepo-api/src/types/filtering.rs b/mediarepo-api/src/types/filtering.rs
new file mode 100644
index 0000000..916db73
--- /dev/null
+++ b/mediarepo-api/src/types/filtering.rs
@@ -0,0 +1,73 @@
+use crate::types::files::FileStatus;
+use chrono::NaiveDateTime;
+use serde::{Deserialize, Serialize};
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct FindFilesRequest {
+    pub filters: Vec<FilterExpression>,
+    pub sort_expression: Vec<SortKey>,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub enum FilterExpression {
+    OrExpression(Vec<FilterQuery>),
+    Query(FilterQuery),
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub enum FilterQuery {
+    Tag(TagQuery),
+    Property(PropertyQuery),
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct TagQuery {
+    pub negate: bool,
+    pub tag: String,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub enum PropertyQuery {
+    Status(FileStatus),
+    FileSize(ValueComparator<u64>),
+    ImportedTime(ValueComparator<NaiveDateTime>),
+    ChangedTime(ValueComparator<NaiveDateTime>),
+    CreatedTime(ValueComparator<NaiveDateTime>),
+    TagCount(ValueComparator<u64>),
+    Cd(String),
+    Id(i64),
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub enum ValueComparator<T> {
+    Less(T),
+    Equal(T),
+    Greater(T),
+    Between((T, T)),
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub enum SortKey {
+    Namespace(SortNamespace),
+    FileName(SortDirection),
+    FileSize(SortDirection),
+    FileImportedTime(SortDirection),
+    FileCreatedTime(SortDirection),
+    FileChangeTime(SortDirection),
+    FileType(SortDirection),
+    NumTags(SortDirection),
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize)]
+pub struct SortNamespace {
+    pub name: String,
+    pub direction: SortDirection,
+}
+
+#[derive(Clone, Debug, Serialize, Deserialize, Ord, PartialOrd, PartialEq)]
+pub enum SortDirection {
+    Ascending,
+    Descending,
+}
+
+impl Eq for SortDirection {}
diff --git a/mediarepo-api/src/types/mod.rs b/mediarepo-api/src/types/mod.rs
index 0c05de4..f76121e 100644
--- a/mediarepo-api/src/types/mod.rs
+++ b/mediarepo-api/src/types/mod.rs
@@ -1,4 +1,5 @@
 pub mod files;
+pub mod filtering;
 pub mod identifier;
 pub mod jobs;
 pub mod misc;