diff --git a/contrib/admin/main.php b/contrib/admin/main.php
index 5a34a376..23e0d179 100644
--- a/contrib/admin/main.php
+++ b/contrib/admin/main.php
@@ -58,6 +58,10 @@ class AdminPage implements Extension {
 				$redirect = false;
 
 				switch($_POST['action']) {
+					case 'delete by query':
+						$this->delete_by_query($_POST['query']);
+						$redirect = true;
+						break;
 					case 'lowercase all tags':
 						$this->lowercase_all_tags();
 						$redirect = true;
@@ -98,6 +102,14 @@ class AdminPage implements Extension {
 		}
 	}
 
+	private function delete_by_query($query) {
+		global $page, $user;
+		assert(strlen($query) > 1);
+		foreach(Image::find_images(0, 1000000, Tag::explode($query)) as $image) {
+			send_event(new ImageDeletionEvent($image));
+		}
+	}
+
 	private function lowercase_all_tags() {
 		global $database;
 		$database->execute("UPDATE tags SET tag=lower(tag)");
diff --git a/contrib/admin/theme.php b/contrib/admin/theme.php
index d79c5c5f..65358e3f 100644
--- a/contrib/admin/theme.php
+++ b/contrib/admin/theme.php
@@ -32,6 +32,15 @@ class AdminPageTheme extends Themelet {
 			</form>
 		";
 		$page->add_block(new Block("Misc Admin Tools", $html));
+
+		$html = "
+			".make_form(make_link("admin_utils"))."
+				<input type='hidden' name='action' value='delete by query'>
+				<input type='text' name='query'>
+				<input type='submit' value='Go'>
+			</form>
+		";
+		$page->add_block(new Block("Delete by Query", $html));
 	}
 }
 ?>