diff --git a/cista/preview.py b/cista/preview.py
index c37a4a4..ad007b1 100644
--- a/cista/preview.py
+++ b/cista/preview.py
@@ -17,6 +17,9 @@ from sanic.log import logger
 
 from cista import config
 from cista.util.filename import sanitize
+import pillow_heif
+
+pillow_heif.register_heif_opener()
 
 bp = Blueprint("preview", url_prefix="/preview")
 
diff --git a/frontend/src/components/MediaPreview.vue b/frontend/src/components/MediaPreview.vue
index 2a1e9c0..03cdf18 100644
--- a/frontend/src/components/MediaPreview.vue
+++ b/frontend/src/components/MediaPreview.vue
@@ -101,7 +101,7 @@ const video = () => ['mkv', 'mp4', 'webm', 'mov', 'avi'].includes(props.doc.ext)
 const audio = () => ['mp3', 'flac', 'ogg', 'aac'].includes(props.doc.ext)
 const archive = () => ['zip', 'tar', 'gz', 'bz2', 'xz', '7z', 'rar'].includes(props.doc.ext)
 const preview = () => (
-  ['bmp', 'ico', 'tif', 'tiff', 'pdf'].includes(props.doc.ext) ||
+  ['bmp', 'ico', 'tif', 'tiff', 'heic', 'heif', 'pdf', 'epub', 'mobi'].includes(props.doc.ext) ||
   props.doc.size > 500000 &&
   ['avif', 'webp', 'png', 'jpg', 'jpeg'].includes(props.doc.ext)
 )
diff --git a/pyproject.toml b/pyproject.toml
index 401c9f1..52132f3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -24,6 +24,7 @@ dependencies = [
     "natsort",
     "pathvalidate",
     "pillow",
+    "pillow-heif>=1.1.0",
     "pyjwt",
     "pymupdf",
     "sanic",