Get data url

input resource url and get data url

K instalaci tototo skriptu si budete muset nainstalovat rozšíření jako Tampermonkey, Greasemonkey nebo Violentmonkey.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Violentmonkey.

K instalaci tohoto skriptu si budete muset nainstalovat rozšíření jako Tampermonkey nebo Userscripts.

You will need to install an extension such as Tampermonkey to install this script.

K instalaci tohoto skriptu si budete muset nainstalovat manažer uživatelských skriptů.

(Už mám manažer uživatelských skriptů, nechte mě ho nainstalovat!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(Už mám manažer uživatelských stylů, nechte mě ho nainstalovat!)

// ==UserScript==
// @name        Get data url
// @namespace   https://blog.bgme.me
// @match       *://*/*
// @run-at      document-idle
// @version     1.0
// @author      bgme
// @description input resource url and get data url
// @supportURL  https://github.com/yingziwu/Greasemonkey/issues
// @icon        -
// @license     AGPL-3.0-or-later
// ==/UserScript==

"use strict";

unsafeWindow.toDataURL = toDataURL;
unsafeWindow.getDataURL = getDataURL;

// https://stackoverflow.com/questions/934012/get-image-data-url-in-javascript/42916772#42916772
function toDataURL(url, callback) {
  GM.xmlHttpRequest({
    method: "GET",
    url: url,
    responseType: "blob",
    onload(response) {
      var fr = new FileReader();

      fr.onload = function () {
        callback(this.result);
      };

      fr.readAsDataURL(response.response);
    },
  });
}

function getDataURL(url) {
  toDataURL(url, function (dataurl) {
    console.log(dataurl);
  });
}