Type File Checker

Im Editor als .html speichern:

<!doctype html>
<html>
<body style="font-family: sans-serif">
<h3>File.type Check</h3>
<input id="f" type="file" accept=".pdf,.jpg,.jpeg,.png" />
<pre id="out"></pre>

<script>
const out = document.getElementById("out");
document.getElementById("f").addEventListener("change", (e) => {
const file = e.target.files[0];
if (!file) return;
out.textContent = JSON.stringify(
{ name: file.name, type: file.type, size: file.size },
null,
2
);
});
</script>
</body>
</html>

Type File Checker

Einfach tool um den Dateitype zu ermitteln