コンソールに無理やり画像を出力する

drawImageToConsole.js

(function(){

console.drawImage = function (img) {
  var refresh = true, maxWidth;

  if (arguments.length >= 2) {
    if (typeof arguments[1] === "boolean") refresh = arguments[1];
    else if (typeof arguments[1] === "number") maxWidth = arguments[1];
    if (arguments.length >= 3 && typeof arguments[2] === "boolean") refresh = arguments[2];
  }
  
  var canvas = document.createElement('canvas');
  var ctx = canvas.getContext('2d');
  
  img.width = img.width || img.videoWidth;
  img.height = img.height || img.videoHeight;
  
  var width = canvas.width = maxWidth || img.width;
  var zoom = width / img.width;
  var height = canvas.height = img.height * zoom;

  ctx.drawImage(img, 0, 0, img.width, img.height, 0, 0, width, height);

  var pixels = ctx.getImageData(0, 0, width, height);
  var data = Array.prototype.slice.apply(pixels.data);

  var text = '', cssList = [];
  for (var y = 0; y < height - 1; y++) {
    for (var x = 0; x < width - 1; x++) {
      var n = x * 4 + y * width * 4;
      var css = 'background:rgba(' + data.slice(n, n + 4).join(',') + ')';
      text += "%c\x20\x20";
      cssList.push(css);
    }
    text += "\n%c\x20"; cssList.push('background:transparent');
  }
  var args = [text].concat(cssList);
  if (refresh) console.clear();
  console.log.apply(console, args);
};

})();

~README.md

drawImageToConsole.js

LICENSE

Copyright (c) 2015 3846masa

Released under the MIT License.

Usage

console.drawImage(img, [maxWidth], [refresh])

Parameters

Name	Type	Description
img	HTMLElement	画像のHTML要素
maxWidth	int (optional)	出力画像の横幅
refresh	boolean (default:true)	コンソールを初期化するか

~~MITLICENSE

The MIT License (MIT)

Copyright (c) 2015 3846masa

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.