diff --git a/README.md b/README.md
index 742b690..df39807 100644
--- a/README.md
+++ b/README.md
@@ -4,7 +4,6 @@ Sam's small image board. Currently a WIP.
 
 ## TODO
 
-- [ ] Improve filters
 - [ ] Pools
 - [ ] Video support
 - [ ] CSS
diff --git a/src/lib.rs b/src/lib.rs
index d06401c..a73bcb5 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -29,6 +29,9 @@ use crate::views::{
     submit_post_details, upload, view_post,
 };
 
+pub(crate) const NEGATIVE_PREFIX: &str = "-";
+pub(crate) const RATING_PREFIX: &str = "rating:";
+
 #[derive(Clone)]
 pub(crate) struct AppState {
     files_dir: Arc<String>,
diff --git a/src/query.rs b/src/query.rs
index d3cc552..2f81278 100644
--- a/src/query.rs
+++ b/src/query.rs
@@ -7,6 +7,7 @@ use sea_orm::{
 };
 
 use crate::{
+    NEGATIVE_PREFIX, RATING_PREFIX,
     auth::User,
     entities::{
         prelude::{SameyPost, SameyTag, SameyTagPost},
@@ -25,64 +26,110 @@ pub(crate) fn search_posts(
     tags: Option<&Vec<&str>>,
     user: Option<User>,
 ) -> Selector<SelectModel<SearchPost>> {
-    let tags: HashSet<String> = match tags {
-        Some(tags) if !tags.is_empty() => tags.iter().map(|&tag| tag.to_lowercase()).collect(),
-        _ => HashSet::new(),
+    let mut include_tags = HashSet::<String>::new();
+    let mut exclude_tags = HashSet::<String>::new();
+    let mut include_ratings = HashSet::<String>::new();
+    let mut exclude_ratings = HashSet::<String>::new();
+    if let Some(tags) = tags {
+        for mut tag in tags.iter().map(|tag| tag.to_lowercase()) {
+            if tag.starts_with(NEGATIVE_PREFIX) {
+                if tag.as_str()[NEGATIVE_PREFIX.len()..].starts_with(RATING_PREFIX) {
+                    exclude_ratings
+                        .insert(tag.split_off(NEGATIVE_PREFIX.len() + RATING_PREFIX.len()));
+                } else {
+                    exclude_tags.insert(tag.split_off(NEGATIVE_PREFIX.len()));
+                }
+            } else if tag.starts_with(RATING_PREFIX) {
+                include_ratings.insert(tag.split_off(RATING_PREFIX.len()));
+            } else {
+                include_tags.insert(tag);
+            }
+        }
+    }
+
+    let mut query = if include_tags.is_empty() && exclude_tags.is_empty() {
+        let mut query = SameyPost::find()
+            .select_only()
+            .column(samey_post::Column::Id)
+            .column(samey_post::Column::Thumbnail)
+            .column_as(
+                Expr::cust("GROUP_CONCAT(\"samey_tag\".\"name\", ' ')"),
+                "tags",
+            )
+            .inner_join(SameyTagPost)
+            .join(
+                sea_orm::JoinType::InnerJoin,
+                samey_tag_post::Relation::SameyTag.def(),
+            );
+        if !include_ratings.is_empty() {
+            query = query.filter(samey_post::Column::Rating.is_in(include_ratings))
+        }
+        if !exclude_ratings.is_empty() {
+            query = query.filter(samey_post::Column::Rating.is_not_in(exclude_ratings))
+        }
+        query
+    } else {
+        let mut query = SameyPost::find()
+            .select_only()
+            .column(samey_post::Column::Id)
+            .column(samey_post::Column::Thumbnail)
+            .column_as(
+                Expr::cust("GROUP_CONCAT(\"samey_tag\".\"name\", ' ')"),
+                "tags",
+            )
+            .inner_join(SameyTagPost)
+            .join(
+                sea_orm::JoinType::InnerJoin,
+                samey_tag_post::Relation::SameyTag.def(),
+            );
+        if !include_tags.is_empty() {
+            let include_tags_count = include_tags.len() as u32;
+            let include_tags_subquery = Query::select()
+                .column((SameyPost, samey_post::Column::Id))
+                .from(SameyPost)
+                .inner_join(
+                    SameyTagPost,
+                    Expr::col((SameyPost, samey_post::Column::Id))
+                        .equals((SameyTagPost, samey_tag_post::Column::PostId)),
+                )
+                .inner_join(
+                    SameyTag,
+                    Expr::col((SameyTagPost, samey_tag_post::Column::TagId))
+                        .equals((SameyTag, samey_tag::Column::Id)),
+                )
+                .and_where(samey_tag::Column::NormalizedName.is_in(include_tags))
+                .group_by_col((SameyPost, samey_post::Column::Id))
+                .and_having(samey_tag::Column::Id.count().eq(include_tags_count))
+                .to_owned();
+            query = query.filter(samey_post::Column::Id.in_subquery(include_tags_subquery));
+        }
+        if !exclude_tags.is_empty() {
+            let exclude_tags_subquery = Query::select()
+                .column((SameyPost, samey_post::Column::Id))
+                .from(SameyPost)
+                .inner_join(
+                    SameyTagPost,
+                    Expr::col((SameyPost, samey_post::Column::Id))
+                        .equals((SameyTagPost, samey_tag_post::Column::PostId)),
+                )
+                .inner_join(
+                    SameyTag,
+                    Expr::col((SameyTagPost, samey_tag_post::Column::TagId))
+                        .equals((SameyTag, samey_tag::Column::Id)),
+                )
+                .and_where(samey_tag::Column::NormalizedName.is_in(exclude_tags))
+                .to_owned();
+            query = query.filter(samey_post::Column::Id.not_in_subquery(exclude_tags_subquery));
+        }
+        if !include_ratings.is_empty() {
+            query = query.filter(samey_post::Column::Rating.is_in(include_ratings))
+        }
+        if !exclude_ratings.is_empty() {
+            query = query.filter(samey_post::Column::Rating.is_not_in(exclude_ratings))
+        }
+        query
     };
 
-    let mut query = if tags.is_empty() {
-        SameyPost::find()
-            .select_only()
-            .column(samey_post::Column::Id)
-            .column(samey_post::Column::Thumbnail)
-            .column_as(
-                Expr::cust("GROUP_CONCAT(\"samey_tag\".\"name\", ' ')"),
-                "tags",
-            )
-            .inner_join(SameyTagPost)
-            .join(
-                sea_orm::JoinType::InnerJoin,
-                samey_tag_post::Relation::SameyTag.def(),
-            )
-            .group_by(samey_post::Column::Id)
-            .order_by_desc(samey_post::Column::Id)
-    } else {
-        let tags_count = tags.len() as u32;
-        let subquery = Query::select()
-            .column((SameyPost, samey_post::Column::Id))
-            .from(SameyPost)
-            .inner_join(
-                SameyTagPost,
-                Expr::col((SameyPost, samey_post::Column::Id))
-                    .equals((SameyTagPost, samey_tag_post::Column::PostId)),
-            )
-            .inner_join(
-                SameyTag,
-                Expr::col((SameyTagPost, samey_tag_post::Column::TagId))
-                    .equals((SameyTag, samey_tag::Column::Id)),
-            )
-            .and_where(samey_tag::Column::NormalizedName.is_in(tags))
-            .group_by_col((SameyPost, samey_post::Column::Id))
-            .and_having(samey_tag::Column::Id.count().eq(tags_count))
-            .to_owned();
-        SameyPost::find()
-            .select_only()
-            .column(samey_post::Column::Id)
-            .column(samey_post::Column::Thumbnail)
-            .column_as(
-                Expr::cust("GROUP_CONCAT(\"samey_tag\".\"name\", ' ')"),
-                "tags",
-            )
-            .inner_join(SameyTagPost)
-            .join(
-                sea_orm::JoinType::InnerJoin,
-                samey_tag_post::Relation::SameyTag.def(),
-            )
-            .filter(samey_post::Column::Id.in_subquery(subquery))
-            .group_by(samey_post::Column::Id)
-            .order_by_desc(samey_post::Column::Id)
-        // println!("{}", &query.build(sea_orm::DatabaseBackend::Sqlite).sql);
-    };
     query = match user {
         None => query.filter(samey_post::Column::IsPublic.into_simple_expr()),
         Some(user) if !user.is_admin => query.filter(
@@ -93,7 +140,10 @@ pub(crate) fn search_posts(
         _ => query,
     };
 
-    query.into_model::<SearchPost>()
+    query
+        .group_by(samey_post::Column::Id)
+        .order_by_desc(samey_post::Column::Id)
+        .into_model::<SearchPost>()
 }
 
 pub(crate) fn get_tags_for_post(post_id: i32) -> Select<SameyTag> {
diff --git a/src/views.rs b/src/views.rs
index 995f047..6fc74dd 100644
--- a/src/views.rs
+++ b/src/views.rs
@@ -23,7 +23,7 @@ use serde::Deserialize;
 use tokio::task::spawn_blocking;
 
 use crate::{
-    AppState,
+    AppState, NEGATIVE_PREFIX, RATING_PREFIX,
     auth::{AuthSession, Credentials, User},
     entities::{
         prelude::{SameyPost, SameyPostSource, SameyTag, SameyTagPost},
@@ -226,10 +226,15 @@ pub(crate) async fn upload(
 
 // Search fields views
 
+struct SearchTag {
+    name: String,
+    value: String,
+}
+
 #[derive(Template)]
 #[template(path = "search_tags.html")]
 struct SearchTagsTemplate {
-    tags: Vec<samey_tag::Model>,
+    tags: Vec<SearchTag>,
 }
 
 #[derive(Debug, Deserialize)]
@@ -242,14 +247,66 @@ pub(crate) async fn search_tags(
     Form(body): Form<SearchTagsForm>,
 ) -> Result<impl IntoResponse, SameyError> {
     let tags = match body.tags.split(' ').last() {
-        Some(tag) if !tag.is_empty() => {
-            SameyTag::find()
-                .filter(Expr::cust_with_expr(
-                    "LOWER(\"samey_tag\".\"name\") LIKE CONCAT(?, '%')",
-                    tag.to_lowercase(),
-                ))
-                .all(&db)
-                .await?
+        Some(tag) => {
+            if tag.starts_with(NEGATIVE_PREFIX) {
+                if tag[NEGATIVE_PREFIX.len()..].starts_with(RATING_PREFIX) {
+                    [
+                        format!("{}u", RATING_PREFIX),
+                        format!("{}s", RATING_PREFIX),
+                        format!("{}q", RATING_PREFIX),
+                        format!("{}e", RATING_PREFIX),
+                    ]
+                    .into_iter()
+                    .filter(|t| t.starts_with(&tag[NEGATIVE_PREFIX.len()..]))
+                    .map(|tag| SearchTag {
+                        value: format!("-{}", &tag),
+                        name: tag,
+                    })
+                    .collect()
+                } else {
+                    SameyTag::find()
+                        .filter(Expr::cust_with_expr(
+                            "LOWER(\"samey_tag\".\"name\") LIKE CONCAT(?, '%')",
+                            tag[NEGATIVE_PREFIX.len()..].to_lowercase(),
+                        ))
+                        .all(&db)
+                        .await?
+                        .into_iter()
+                        .map(|tag| SearchTag {
+                            value: format!("-{}", &tag.name),
+                            name: tag.name,
+                        })
+                        .collect()
+                }
+            } else if tag.starts_with(RATING_PREFIX) {
+                [
+                    format!("{}u", RATING_PREFIX),
+                    format!("{}s", RATING_PREFIX),
+                    format!("{}q", RATING_PREFIX),
+                    format!("{}e", RATING_PREFIX),
+                ]
+                .into_iter()
+                .filter(|t| t.starts_with(tag))
+                .map(|tag| SearchTag {
+                    value: tag.clone(),
+                    name: tag,
+                })
+                .collect()
+            } else {
+                SameyTag::find()
+                    .filter(Expr::cust_with_expr(
+                        "LOWER(\"samey_tag\".\"name\") LIKE CONCAT(?, '%')",
+                        tag.to_lowercase(),
+                    ))
+                    .all(&db)
+                    .await?
+                    .into_iter()
+                    .map(|tag| SearchTag {
+                        value: tag.name.clone(),
+                        name: tag.name,
+                    })
+                    .collect()
+            }
         }
         _ => vec![],
     };
diff --git a/templates/posts.html b/templates/posts.html
index 03a0852..efe035d 100644
--- a/templates/posts.html
+++ b/templates/posts.html
@@ -35,6 +35,9 @@
     </article>
     <main>
       <h1>Viewing posts</h1>
+      {% if posts.is_empty() %}
+      <div>No posts found!</div>
+      {% else %}
       <ul>
         {% for post in posts %}
         <li>
@@ -48,6 +51,7 @@
         {% endfor %}
       </ul>
       <div>Page {{ page }} of {{ page_count }}</div>
+      {% endif %}
     </main>
   </body>
 </html>
diff --git a/templates/search_tags.html b/templates/search_tags.html
index 0580a75..79f4b63 100644
--- a/templates/search_tags.html
+++ b/templates/search_tags.html
@@ -1,7 +1,7 @@
 {% for tag in tags %}
 <li>
   <button
-    hx-post="/select_tag/{{ tag.name }}"
+    hx-post="/select_tag/{{ tag.value }}"
     hx-target="previous .tags"
     hx-swap="outerHTML"
   >