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Get MIME Type from Base64 string

vilmacio answered on October 5, 2020 Popularity 9/10 Helpfulness 6/10

answer Get MIME Type from Base64 string

related typescript get the mime type from base64 string

Get MIME Type from Base64 string

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var signatures = {
  JVBERi0: "application/pdf",
  R0lGODdh: "image/gif",
  R0lGODlh: "image/gif",
  iVBORw0KGgo: "image/png",
  "/9j/": "image/jpg"
};

function detectMimeType(b64) {
  for (var s in signatures) {
    if (b64.indexOf(s) === 0) {
      return signatures[s];
    }
  }
}

// Some tests
console.log(detectMimeType('R0lGODdhAQABAPAAAP8AAAAAACwAAAAAAQABAAACAkQBADs='));
console.log(detectMimeType('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAIAAACQd1PeAAAADElEQVR42mP4z8AAAAMBAQD3A0FDAAAAAElFTkSuQmCC'));
console.log(detectMimeType('JVBERi0xLjUKJYCBgoMKMSAwIG9iago8PC9GaWx0ZXIvRmxhdGVEZWNvZGUvRmlyc3QgMTQxL04gMjAvTGVuZ3'));
console.log(detectMimeType('/9j/4AAQSkZJRgABAQAAZABkAAD/2wCEABQQEBkSGScXFycyJh8mMi4mJiYmLj41NTU1NT5EQUFBQUFBRERERERERERE'));
 Run code snippet

Popularity 9/10 Helpfulness 6/10 Language javascript

Source: stackoverflow.com

Tags: base64 get javascript mime string

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Contributed on Sep 16 2022

vilmacio

0 Answers Avg Quality 2/10

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typescript get the mime type from base64 string

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//if you want to get Mime type use this one

const body = {profilepic:"data:image/png;base64,abcdefghijklmnopqrstuvwxyz0123456789"};
let mimeType = body.profilepic.match(/[^:]\w+\/[\w-+\d.]+(?=;|,)/)[0];

//===========================================

//if you want to get only type of it like (png, jpg) etc

const body2 = {profilepic:"data:image/png;base64,abcdefghijklmnopqrstuvwxyz0123456789"};
let mimeType2 = body2.profilepic.match(/[^:/]\w+(?=;|,)/)[0];

Popularity 9/10 Helpfulness 8/10 Language typescript

Source: Grepper

Tags: base64 ba

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Contributed on Oct 05 2020

Cute Caterpillar

0 Answers Avg Quality 2/10

Get MIME Type from Base64 string

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Get MIME Type from Base64 string

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typescript get the mime type from base64 string

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