If I have an IPFS CID address (with no extension), of a
file like this for instance https://ipfs.infura.io/ipfs/QmNhq4hx1KfTw1a5pTtudGXm9Q4xhWdeuWtPSSG19SSZeU , how can I find its MIME type using Javascript?
I've tried the following:
let file='https://ipfs.infura.io/ipfs/QmNhq4hx1KfTw1a5pTtudGXm9Q4xhWdeuWtPSSG19SSZeU'
if (window.FileReader && window.Blob) {
console.log("All the File APIs are supported by the browser.");
console.log("Type: " + file.type);
} else {
console.log("File and Blob are not supported by the browser");
}
This is always giving me undefined.
Any help would be much appreciated.
You have a url, so to get the mime type you can make a HTTP HEAD request.
(async function(){
let file='https://ipfs.infura.io/ipfs/QmNhq4hx1KfTw1a5pTtudGXm9Q4xhWdeuWtPSSG19SSZeU';
var req = await fetch(file, {method:'HEAD'});
console.log(req.headers.get('content-type'));
})()