diff --git a/akarpov/files/previews/__init__.py b/akarpov/files/previews/__init__.py
index 14dadff..57b1184 100644
--- a/akarpov/files/previews/__init__.py
+++ b/akarpov/files/previews/__init__.py
@@ -3,26 +3,40 @@
 previews = {
     "application": {
         "zip": application.zip.view,
+        "java-archive": application.zip.view,
         "doc": application.doc.view,
         "docx": application.docx.view,
+        "vnd.oasis.opendocument.text": application.odt.view,
     },
     "audio": {
         "aac": audio.basic.view,
         "mpeg": audio.basic.view,
-        "ogg": audio.basic.view,
+        "ogg": audio.oga.view,
         "opus": audio.basic.view,
         "wav": audio.basic.view,
         "webm": audio.basic.view,
     },
-    "video": {"mp4": video.mp4.view, "quicktime": video.basic.view},
+    "video": {
+        "mp4": video.mp4.view,
+        "ogg": video.basic.view,
+        "mpeg": video.basic.view,
+        "quicktime": video.basic.view,
+    },
     "image": {
         "jpeg": image.basic.view,
         "png": image.basic.view,
         "avif": image.basic.view,
         "bmp": image.basic.view,
+        "vnd.microsoft.icon": image.basic.view,
         "gif": image.gif.view,
     },
-    "text": {"css": text.common.view, "plain": text.plain.view, "csv": text.csv.view},
+    "text": {
+        "css": text.common.view,
+        "html": text.common.view,
+        "javascript": text.common.view,
+        "plain": text.plain.view,
+        "csv": text.csv.view,
+    },
 }
 
 source_code = {}
@@ -32,10 +46,20 @@
 extensions = {
     "mp4": video.mp4.view,
     "mp3": audio.basic.view,
+    "opus": audio.basic.view,
     "avif": image.basic.view,
     "bmp": image.basic.view,
+    "jpeg": image.basic.view,
+    "jpg": image.basic.view,
+    "ico": image.basic.view,
     "mov": video.basic.view,
+    "ogv": video.basic.view,
     "doc": application.doc.view,
     "docx": application.docx.view,
+    "odt": application.odt.view,
     "gif": image.gif.view,
+    "zip": application.zip.view,
+    "jar": application.zip.view,
+    "mpeg": video.mp4.view,
+    "oga": audio.oga.view,
 } | source_code
diff --git a/akarpov/files/previews/application/__init__.py b/akarpov/files/previews/application/__init__.py
index 3a9b9a5..ce5d9df 100644
--- a/akarpov/files/previews/application/__init__.py
+++ b/akarpov/files/previews/application/__init__.py
@@ -1 +1 @@
-from . import doc, docx, zip  # noqa
+from . import doc, docx, odt, zip  # noqa
diff --git a/akarpov/files/previews/application/odt.py b/akarpov/files/previews/application/odt.py
new file mode 100644
index 0000000..92932a7
--- /dev/null
+++ b/akarpov/files/previews/application/odt.py
@@ -0,0 +1,16 @@
+import textract
+
+from akarpov.files.models import File
+
+
+def view(file: File):
+    static = ""
+    content = ""
+    text = (
+        textract.process(file.file.path, extension="odt", output_encoding="utf8")
+        .decode("utf8")
+        .replace("\t", "    ")
+    )
+    for line in text.split("\n"):
+        content += f"<p class='mt-1'>{line}</p>"
+    return static, content
diff --git a/akarpov/files/previews/audio/__init__.py b/akarpov/files/previews/audio/__init__.py
index 21123fd..29ac151 100644
--- a/akarpov/files/previews/audio/__init__.py
+++ b/akarpov/files/previews/audio/__init__.py
@@ -1 +1 @@
-from . import basic  # noqa
+from . import basic, oga  # noqa
diff --git a/akarpov/files/previews/audio/oga.py b/akarpov/files/previews/audio/oga.py
new file mode 100644
index 0000000..36ce087
--- /dev/null
+++ b/akarpov/files/previews/audio/oga.py
@@ -0,0 +1,73 @@
+import textract
+
+from akarpov.files.models import File
+
+
+def view(file: File) -> (str, str):
+    static = f"""
+    <meta property="og:title" content="{file.name}" />
+    """
+    text = (
+        textract.process(file.file.path, extension="ogg", output_encoding="utf8")
+        .decode("utf8")
+        .replace("\t", "    ")
+    )
+    content = (
+        """
+    <div id="waveform">
+    </div>
+    <div id="wave-timeline"> </div>
+
+    <div class="controls mt-4 d-flex align-items-center justify-content-center text-center">
+        <button class="btn btn-primary" data-action="play">
+            <i class="glyphicon glyphicon-play"></i>
+            Play
+            /
+            <i class="glyphicon glyphicon-pause"></i>
+            Pause
+        </button>
+    </div>"""
+        + f"""
+    <div>{text}</div>
+    """
+        + """
+    <script src="https://unpkg.com/wavesurfer.js@6.6.3/dist/wavesurfer.js"></script>
+    <script src="https://unpkg.com/wavesurfer.js@6.6.3/dist/plugin/wavesurfer.timeline.min.js"></script>
+    <script src="https://unpkg.com/wavesurfer.js@6.6.3/dist/plugin/wavesurfer.regions.min.js"></script>
+    <script>
+    window.onload = function() {
+    wavesurfer = WaveSurfer.create({
+        container: document.querySelector('#waveform'),
+        waveColor: '#D9DCFF',
+        progressColor: '#4353FF',
+        cursorColor: '#4353FF',
+        barWidth: 3,
+        barRadius: 3,
+        cursorWidth: 1,
+        height: 200,
+        barGap: 3,
+        plugins: [
+            WaveSurfer.regions.create({}),
+            WaveSurfer.timeline.create({
+                container: "#wave-timeline"
+            })
+        ]
+    });
+
+    wavesurfer.on('error', function(e) {
+        console.warn(e);
+    });
+    """
+        + f"""
+    wavesurfer.load('{file.file.url}');
+    """
+        + """
+    document
+        .querySelector('[data-action="play"]')
+        .addEventListener('click', wavesurfer.playPause.bind(wavesurfer));
+    }
+    </script>
+    """
+    )
+
+    return static, content
diff --git a/akarpov/files/previews/font/__init__.py b/akarpov/files/previews/font/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/akarpov/files/previews/font/otf.py b/akarpov/files/previews/font/otf.py
new file mode 100644
index 0000000..61dafa1
--- /dev/null
+++ b/akarpov/files/previews/font/otf.py
@@ -0,0 +1,5 @@
+from akarpov.files.models import File
+
+
+def view(file: File):
+    ...
diff --git a/akarpov/files/previews/text/common.py b/akarpov/files/previews/text/common.py
index e14a50a..362c3c6 100644
--- a/akarpov/files/previews/text/common.py
+++ b/akarpov/files/previews/text/common.py
@@ -22,10 +22,11 @@
     "scala": "scala",
     "sc": "scala",
     "sql": "sql",
-    "html": "html",
     "rs": "rust",
     "pl": "perl",
     "PL": "perl",
+    "htm": "html",
+    "html": "html",
 }
 
 
diff --git a/akarpov/files/views.py b/akarpov/files/views.py
index 28f4755..51a9980 100644
--- a/akarpov/files/views.py
+++ b/akarpov/files/views.py
@@ -1,5 +1,6 @@
 import os
 
+import structlog
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.core.exceptions import PermissionDenied
 from django.shortcuts import get_object_or_404
@@ -17,6 +18,8 @@
 from akarpov.files.models import File, Folder
 from akarpov.files.previews import extensions, previews
 
+logger = structlog.get_logger(__name__)
+
 
 class TopFolderView(LoginRequiredMixin, ListView):
     template_name = "files/list.html"
@@ -60,16 +63,21 @@ def get_context_data(self, **kwargs):
         context["has_perm"] = self.object.user == self.request.user
         static = ""
         content = ""
-        if self.object.file_type:
-            t1, t2 = self.object.file_type.split("/")
-            extension = self.object.file.path.split(".")[-1]
-            loaded = False
-            if t1 in previews:
-                if t2 in previews[t1]:
-                    static, content = previews[t1][t2](self.object)
-                    loaded = True
-            if not loaded and extension in extensions:
+        extension = self.object.file.path.split(".")[-1]
+        try:
+            if self.object.file_type:
+                t1, t2 = self.object.file_type.split("/")
+                loaded = False
+                if t1 in previews:
+                    if t2 in previews[t1]:
+                        static, content = previews[t1][t2](self.object)
+                        loaded = True
+                if not loaded and extension in extensions:
+                    static, content = extensions[extension](self.object)
+            elif extension in extensions:
                 static, content = extensions[extension](self.object)
+        except Exception as e:
+            logger.error(e)
         context["preview_static"] = static
         context["preview_content"] = content
         return context