diff --git a/helpers/convert-old-json-to-yaml.js b/helpers/convert-old-json-to-yaml.js
new file mode 100644
index 0000000..7e4259f
--- /dev/null
+++ b/helpers/convert-old-json-to-yaml.js
@@ -0,0 +1,29 @@
+const fs = require('fs');
+const UAList = require('./src/useragents').useragents;
+const json2yaml = require('json2yaml');
+const Parser = require('./lib/parser').default;
+
+const newBrowserList = {};
+
+for (const browserName in UAList) {
+  const newBrowser = [];
+  const browserClass = UAList[browserName];
+
+  for (const browserUA in browserClass) {
+    const parsedUA = new Parser(browserUA).parse().getResult();
+    const newBrowserDeclaration = {
+      ua: browserUA
+    };
+    // const browserDeclaration = browserClass[browserUA];
+
+    newBrowserDeclaration.spec = parsedUA;
+
+    newBrowser.push(newBrowserDeclaration);
+  }
+
+  newBrowserList[browserName] = newBrowser;
+}
+
+const yaml = json2yaml.stringify(newBrowserList);
+
+fs.writeFileSync('useragentstrings.yml', yaml);