Moving from SmartEditor 2

Replace Naver SmartEditor 2.0 on an existing board.

SmartEditor 2.0 hides a textarea and copies the content back with UPDATE_CONTENTS_FIELD before submitting. 82editor keeps the textarea in sync on its own, so that line simply goes away.

<textarea name="ir1" id="ir1"></textarea>
<link rel="stylesheet" href="https://82editor.com/cdn/v1.0.0/82editor.css">
<script src="https://82editor.com/cdn/v1.0.0/82editor.min.js"></script>
<script>
  Editor82.createEditor('#ir1', { toolbar: 'board', height: 400, uploadUrl: '/upload.php' });
</script>

Your server keeps reading the same field.
Existing posts open unchanged.
Replace the photo popup with uploadUrl; reply with {"url": "..."}.