client-hints-iframe-inner.sub.https.html (290B)
1 <!DOCTYPE html> 2 <title>Client Hint Echoing Iframe</title> 3 <body> 4 <script> 5 window.parent.postMessage({'headers': { 6 'sec-ch-viewport-width': '{{header_or_default(sec-ch-viewport-width, )}}', 7 'sec-ch-ua-mobile': '{{header_or_default(sec-ch-ua-mobile, )}}', 8 }}, '*'); 9 </script> 10 </body>