diff --git a/Userland/Libraries/LibGUI/FileSystemModel.cpp b/Userland/Libraries/LibGUI/FileSystemModel.cpp
index 91d804d25e..545b4fda7c 100644
--- a/Userland/Libraries/LibGUI/FileSystemModel.cpp
+++ b/Userland/Libraries/LibGUI/FileSystemModel.cpp
@@ -120,10 +120,21 @@ void FileSystemModel::Node::traverse_if_needed()
 
         auto child = maybe_child.release_nonnull();
         total_size += child->size;
-        if (S_ISDIR(child->mode))
+        if (S_ISDIR(child->mode)) {
             directory_children.append(move(child));
-        else
-            file_children.append(move(child));
+        } else {
+            if (!m_model.m_allowed_file_extensions.has_value()) {
+                file_children.append(move(child));
+                continue;
+            }
+
+            for (auto& extension : *m_model.m_allowed_file_extensions) {
+                if (child_name.ends_with(DeprecatedString::formatted(".{}", extension))) {
+                    file_children.append(move(child));
+                    break;
+                }
+            }
+        }
     }
 
     m_children.extend(move(directory_children));
@@ -750,6 +761,15 @@ void FileSystemModel::set_should_show_dotfiles(bool show)
     invalidate();
 }
 
+void FileSystemModel::set_allowed_file_extensions(Optional<Vector<DeprecatedString>> const& allowed_file_extensions)
+{
+    if (m_allowed_file_extensions == allowed_file_extensions)
+        return;
+    m_allowed_file_extensions = allowed_file_extensions;
+
+    invalidate();
+}
+
 bool FileSystemModel::is_editable(ModelIndex const& index) const
 {
     if (!index.is_valid())
diff --git a/Userland/Libraries/LibGUI/FileSystemModel.h b/Userland/Libraries/LibGUI/FileSystemModel.h
index 085d0644f2..6f4ac96f6f 100644
--- a/Userland/Libraries/LibGUI/FileSystemModel.h
+++ b/Userland/Libraries/LibGUI/FileSystemModel.h
@@ -146,6 +146,9 @@ public:
     bool should_show_dotfiles() const { return m_should_show_dotfiles; }
     void set_should_show_dotfiles(bool);
 
+    Optional<Vector<DeprecatedString>> allowed_file_extensions() const { return m_allowed_file_extensions; }
+    void set_allowed_file_extensions(Optional<Vector<DeprecatedString>> const& allowed_file_extensions);
+
 private:
     FileSystemModel(DeprecatedString root_path, Mode);
 
@@ -169,6 +172,8 @@ private:
     unsigned m_thumbnail_progress { 0 };
     unsigned m_thumbnail_progress_total { 0 };
 
+    Optional<Vector<DeprecatedString>> m_allowed_file_extensions;
+
     bool m_should_show_dotfiles { false };
 
     RefPtr<Core::FileWatcher> m_file_watcher;