Paste data from a word processor, such as LibreOffice Writer or WordPad.<br>
Use Ctrl+V anywhere on the page, or paste into the input box.<br><br>

<pre>
</pre>
<input>
<script>
	let resultel = document.querySelector('pre');

	document.body.onpaste = function(ev) {
		let items = ev.clipboardData.items;
		for (let i in items) {
			if (items[i].type == 'text/rtf') {
				items[i].getAsString(function(str) {
					let result = str.match(/\\\*\\generator .*/i);
					if (result == null || result[0].length < 10) {
						result = 'No generator info found in RTF data';
					}
					else {
						result = result.join('\n');
					}
					resultel.innerText += '\n' + result;
				});
				return;
			}
		}
		resultel.innerText += '\nThe pasted data does not offer RTF format';
		ev.preventDefault();
		ev.stopPropagation();
		return false;
	};

	document.querySelector('input').onpaste = document.body.onpaste;
</script>