diff --git a/showbits-thermal-printer-ui/src/components/CDocumentImage.vue b/showbits-thermal-printer-ui/src/components/CDocumentImage.vue
index 1419ff5..ca9e4cd 100644
--- a/showbits-thermal-printer-ui/src/components/CDocumentImage.vue
+++ b/showbits-thermal-printer-ui/src/components/CDocumentImage.vue
@@ -10,6 +10,7 @@ const file = ref<File>();
 const title = ref("");
 const caption = ref("");
 const algo = ref("stucki");
+const rotate = ref(false);
 const bright = ref(true);
 const seamless = ref(false);
 const feed = ref(true);
@@ -33,6 +34,7 @@ function onFormSubmit() {
   if (title.value) data.append("title", title.value);
   if (caption.value) data.append("caption", caption.value);
   data.append("algo", algo.value);
+  data.append("rotate", String(rotate.value));
   data.append("bright", String(bright.value));
   data.append("seamless", String(seamless.value));
   data.append("feed", String(feed.value));
@@ -89,6 +91,7 @@ function onImageChange() {
     </label>
 
     <div class="wide">
+      <label><input v-model="rotate" type="checkbox" :disabled /> Rotate</label>
       <label><input v-model="bright" type="checkbox" :disabled /> Bright</label>
       <label>
         <input v-model="seamless" type="checkbox" :disabled />
diff --git a/showbits-thermal-printer/src/documents/image/mod.rs b/showbits-thermal-printer/src/documents/image/mod.rs
index f3f289b..e20cd69 100644
--- a/showbits-thermal-printer/src/documents/image/mod.rs
+++ b/showbits-thermal-printer/src/documents/image/mod.rs
@@ -91,6 +91,7 @@ struct Data {
 pub async fn post(server: State<Server>, mut multipart: Multipart) -> somehow::Result<Response> {
     let mut image = None;
     let mut algo = "stucki".to_string();
+    let mut rotate = false;
     let mut bright = true;
 
     let mut data = Data {
@@ -114,6 +115,9 @@ pub async fn post(server: State<Server>, mut multipart: Multipart) -> somehow::R
             Some("algo") => {
                 algo = field.text().await?;
             }
+            Some("rotate") => {
+                rotate = !field.text().await?.is_empty();
+            }
             Some("bright") => {
                 bright = !field.text().await?.is_empty();
             }
@@ -139,7 +143,7 @@ pub async fn post(server: State<Server>, mut multipart: Multipart) -> somehow::R
     }
 
     // Decode image data
-    let image = {
+    let mut image = {
         // https://github.com/image-rs/image/issues/2392#issuecomment-2547393362
         let mut decoder = ImageReader::new(Cursor::new(image.as_bytes()))
             .with_guessed_format()?
@@ -150,6 +154,11 @@ pub async fn post(server: State<Server>, mut multipart: Multipart) -> somehow::R
         decoded.to_rgba8()
     };
 
+    // Rotate image
+    if rotate {
+        image = imageops::rotate90(&image);
+    }
+
     // Dither image
     let max_width = Some(384);
     let max_height = Some(1024);