diff --git a/lib/LDV.pm b/lib/LDV.pm
index fa8b968..a33d013 100644
--- a/lib/LDV.pm
+++ b/lib/LDV.pm
@@ -61,7 +61,7 @@ sub startup {
     $ib->get ('/') -> to(action => 'create');
     $ib->route('/:time', time => qr/\d+/)
       ->via('GET') -> to(action => 'view');
-   #$ib->get('/prune') -> to(action => 'prune');
+    $ib->get ('/prune')  -> to(action => 'prune');
     $ib->get ('/latest') -> to(action => 'latest')
       if ($conf->{show_latest});
 
diff --git a/lib/LDV/Imgbin.pm b/lib/LDV/Imgbin.pm
index ebdfa23..60e384c 100644
--- a/lib/LDV/Imgbin.pm
+++ b/lib/LDV/Imgbin.pm
@@ -152,7 +152,27 @@ sub latest {
 sub prune {
   my ($self) = @_;
 
-  die("unimplemented\n");
+  eval {
+    my $root = $self->app->config->{imgbin}->{root};
+    opendir(my $DH, $root)
+      or die("opendir: $!\n");
+    my @files = grep { m/\d+\.json/oi } readdir($DH);
+    my @times = map { s/\.json//oi    } @items;
+    closedir($DH);
+
+    my $now = time();
+    foreach my $time (@times) {
+      my $data  = Mojo::Asset::File->new(path => $self->_data_path($time));
+      my $image = decode_json($data->slurp);
+      next if $image->{expire} > $now;
+      unlink $self->_image_path($time, $image->{format}, 1);
+      unlink $self->_thumb_path($time);
+    } 1;
+  } or do {
+    $self->flash(error => $@);
+  };
+  $self->redirect_to('/imgbin');
+  $self->rendered();
 }
 
 1;