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Replace Missing Favicon

Add default favicon for any sites that don't have a favicon

  1. // ==UserScript==
  2. // @name        Replace Missing Favicon
  3. // @namespace   iFantz7E.ReplaceMissingFavicon
  4. // @description Add default favicon for any sites that don't have a favicon
  5. // @version     0.14
  6. // @icon        https://i.imgur.com/AI5VsOE.png
  7. // @include     *
  8. // @run-at      document-start
  9. // @grant       GM_xmlhttpRequest
  10. // @connect     *
  11. // @copyright   2017, 7-elephant
  12. // ==/UserScript==
  13.  
  14. // Connect: connect to any icons in link tags
  15.  
  16. (function ()
  17. {
  18. 	"use strict";
  19. 	// jshint multistr:true
  20.  
  21. function attachOnReady(callback) 
  22. {
  23. 	document.addEventListener("DOMContentLoaded", function (e) 
  24. 	{
  25. 		callback();
  26. 	});
  27. }
  28.  
  29. function getFavicon()
  30. {
  31. 	var rgxIcon = /icon/i;
  32.     var elesLink = document.querySelectorAll("link");
  33.     for (var i = 0; i < elesLink.length; i++)
  34.     {
  35. 		var attrRel = elesLink[i].getAttribute("rel");
  36.         if(rgxIcon.test(attrRel))
  37.         {
  38. 			return elesLink[i].getAttribute("href") || "";
  39.         }
  40.     }
  41.     return "";        
  42. }
  43.  
  44. function addFavicon()
  45. {
  46. 	// Default icon from https://s2.googleusercontent.com/s2/favicons?domain=sample
  47. 	var iconDefault = "data:image/png;base64,\
  48. iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAABs0lEQVR4AWL4//8/RRjO8Iucx+noO0O2qmlbUEnt5r3Juas+\
  49. hsQD6KaG7dqCKPgx72Pe9GIY27btZBrbtm3btm0nO12D7tVXe63jqtqqU/iDw9K58sEruKkngH0DBljOE+T/qqx/Ln718RZO\
  50. Fasxyd3XRbWzlFMxRbgOTx9QWFzHtZlD+aqLb108sOAIAai6+NbHW7lUHaZkDFJt+wp1DG7R1d0b7Z88EOL08oXwjokcOvvU\
  51. xYMjBFCamWP5KjKBjKOpZx2HEPj+Ieod26U+dpg6lK2CIwTQH0oECGT5eHj+IgSueJ5fPaPg6PZrz6DGHiGAISE7QPrIvIKV\
  52. rSvCe2DNHSsehIDatOBna/+OEOgTQE6WAy1AAFiVcf6PhgCGxEvlA9QngLlAQCkLsNWhBZIDz/zg4ggmjHfYxoPGEMPZECW+\
  53. zjwmFk6Ih194y7VHYGOPvEYlTAJlQwI4MEhgTOzZGiNalRpGgsOYFw5lEfTKybgfBtmuTNdI3MrOTAQmYf/DNcAwDeycVjRO\
  54. gZFt18gMso6V5Z8JpcEk2LPKpOAH0/4bKMCAYnuqm7cHOGHJTBRhAEJN9d/t5zCxAAAAAElFTkSuQmCC";
  55. 	
  56. 	var ele = document.createElement("link");
  57. 	ele.setAttribute("rel", "icon");
  58. 	ele.setAttribute("type", "image/png");
  59. 	ele.setAttribute("href", iconDefault);
  60. 	
  61. 	document.head.appendChild(ele);
  62. }
  63.  
  64. function main() 
  65. {
  66. 	if (window !== window.parent)
  67. 	{
  68. 		//console.log("iframe");
  69. 		return;
  70. 	}
  71. 	
  72. 	var onloadFavIcon = function(response, b)
  73. 	{
  74. 		if (response.status !== 200)
  75. 		{
  76. 			console.log("Favicon: Not found - " + (response.finalUrl || "Request error"));
  77. 			addFavicon();
  78. 		}
  79. 		else
  80. 		{
  81. 			//console.log("Favicon: Found 200 - " + response.finalUrl);
  82. 		}
  83. 	}
  84. 	
  85. 	var favIcon = getFavicon();
  86. 	if (!favIcon)
  87. 	{
  88. 		GM_xmlhttpRequest(
  89. 		{
  90. 			url: "/favicon.ico",
  91. 			method: "HEAD",
  92. 			onload: onloadFavIcon,
  93. 			onerror: onloadFavIcon
  94. 		});
  95. 	}
  96. 	else
  97. 	{
  98. 		//console.log(favIcon);
  99. 		/*
  100. 		GM_xmlhttpRequest(
  101. 		{
  102. 			url: favIcon,
  103. 			method: "HEAD",
  104. 			onload: onloadFavIcon,
  105. 			onerror: onloadFavIcon
  106. 		});
  107. 		*/
  108. 	}
  109. }
  110.  
  111. attachOnReady(main);
  112. 	
  113. })();
  114.  
  115. // End