diff --git a/lib/nanoc/filters/minify_json.rb b/lib/nanoc/filters/minify_json.rb
new file mode 100644
index 0000000..3718fdf
--- /dev/null
+++ b/lib/nanoc/filters/minify_json.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+class Nanoc::Filters::MinifyJSON < Nanoc::Filter
+  require "json"
+  identifier :minify_json
+  type text: :text
+
+  def run(content, options = {})
+    JSON.dump(JSON.parse(content))
+  end
+end
diff --git a/rules/pages/TheSurahIndex.rules b/rules/pages/TheSurahIndex.rules
index 688d728..efa2b17 100644
--- a/rules/pages/TheSurahIndex.rules
+++ b/rules/pages/TheSurahIndex.rules
@@ -15,6 +15,7 @@ compile "/js/surah/index/redirect.ts" do
 end
 
 compile "/surahs.json" do
+  filter(:minify_json)
   write "/surahs.json"
 end