What is the process for utilizing an SVG path as a favicon?

I am interested in using an SVG as a favicon, but I do not want to reference it as a separate file like this:

<link rel="icon" href="images/favicon.svg" sizes="any" type="image/svg+xml">

Instead, I would like to use an icon I obtained from Bootstrap as the favicon without having to download it:

<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-alarm-fill" viewBox="0 0 16 16">
   <path fill-rule="evenodd" d="M6 .5a.5.5 0 0 1 .5-.5h3a.5.5 0 0 1 0 1H9v1.07a7.001 7.001 0 0 1 3.274 12.474l.601.602a.5.5 0 0 1-.707.708l-.746-.746A6.97 6.97 0 0 1 8 16a6.97 6.97 0 0 1-3.422-.892l-.746.746a.5.5 0 0 1-.707-.708l.602-.602A7.001 7.001 0 0 1 7 2.07V1h-.5A.5.5 0 0 1 6 .5zM.86 5.387A2.5 2.5 0 1 1 4.387 1.86 8.035 8.035 0 0 0 .86 5.387zM11.613 1.86a2.5 2.5 0 1 1 3.527 3.527 8.035 8.035 0 0 0-3.527-3.527zM8.5 5.5a.5.5 0 0 0-1 0v3.362l-1.429 2.38a.5.5 0 1 0 .858.515l1.5-2.5A.5.5 0 0 0 8.5 9V5.5z"/>
</svg>

Is there a way to achieve this without downloading the icon separately?

htmlcsssvg

Answer №1

In CSS urls, only the < and > symbols need to be escaped. The only character that requires escaping is the # in color notations and links

fill="currentColor" serves no purpose; it only works when the SVG is used in the <body>

The sizes attribute is not necessary, based on my experiments

As per the documentation, the type attribute is no longer mandatory according to the docs.

Bootstrap Icons tend to be inflated; they can be resized by modifying the paths and changing the viewBox

Here is how the HTML file looks (linebreaks in the SVG added solely for demonstration purposes)

##Basecode

<!DOCTYPE html>
<html lang="en">
 <head>
  <meta charset="utf-8" />
  <link
   rel="icon"
   href="data:image/svg+xml,YOUR SVG HERE"
  />
</head>
<body></body>
</html>

Fullcode

<!DOCTYPE html>
<html lang="en">
 <head>
  <meta charset="utf-8" />
  <link
   rel="icon"
   href="data:image/svg+xml,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 160 160'>
    <path d='M55 5a5 5 90 015-5h40a5 5 90 010 10h-10v11a70 70 90 0135 123l8 8a5 5 90 01-7 7l-9-9
     a70 70 90 01-37 11a70 70 90 01-37-11l-9 9a5 5 90 01-7-7l8-8a70 70 90 0135-123v-11h-10
     a5 5 90 01-5-5z
     m-46 49a25 25 90 1135-35a80 80 90 00-35 35z
     m126-44c-8 0-14 3-19 9a80 80 90 0135 35a25 25 90 00-16-44z
     m-50 40a5 5 90 00-10 0v39l-15 29a5 5 90 109 5l15-30a5 5 90 001-2v-40z'/>
   </svg>"
  />
</head>
<body></body>
</html>

Answer №2

Have you thought about utilizing a data URL in this case?

<link rel="icon" href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='currentColor' class='bi bi-alarm-fill' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M6 .5a.5.5 0 0 1 .5-.5h3a.5.5 0 0 1 0 1H9v1.07a7.001 7.001 0 0 1 3.274 12.474l.601.602a.5.5 0 0 1-.707.708l-.746-.746A6.97 6.97 0 0 1 8 16a6.97 6.97 0 0 1-3.422-.892l-.746.746a.5.5 0 0 1-.707-.708l.602-.602A7.001 7.001 0 0 1 7 2.07V1h-.5A.5.5 0 0 1 6 .5zM.86 5.387A2.5 2.5 0 1 1 4.387 1.86 8...</answer2>
<exanswer2><div class="answer accepted" i="65284033" l="4.0" c="1607912847" v="2" a="UGF1bCBMZUJlYXU=" ai="1292848">
<p>Consider trying a <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/Basics_of_HTTP/Data_URIs" rel="nofollow noreferrer">data URL</a> for this.</p>
<pre><code><link rel="icon" href="data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='currentColor' class='bi bi-alarm-fill' viewBox='0 0 16 16'%3E%3Cpath fill-rule='evenodd' d='M6 .5a.5.5 0 0 1 .5-.5h3a.5.5 0 0 1 0 1H9v1.07a7.001 7.001 0 0 1 3.274 12.474l.601.602a.5.5 0 0 1-.707.708l-.746-.746A6.97 6.97 0 0 1 8 16a6.97 6.97 0 0 1-3.422-.892l-.746.746a.5.5 0 0 1-.707-.708l.602-.602A7.001 7.001 0 0 1 7 2.07V1h-.5A.5.5 0 0 1 6 .5zM.86 5.387A2.5 2.5 0 1 1 4.387 1.86 8.035 8.035 0 0 0 .86 5.387zM11.613 1.86a2.5 2.5 0 1 1 3.527 3.527 8.035 8.035 0 0 0-3.527-3.527zM8.5 5.5a.5.5 0 0 0-1 0v3.362l-1.429 2.38a.5.5 0 1 0 .858.515l1.5-2.5A.5.5 0 0 0 8.5 9V5.5z'/%3E%3C/svg%3E" sizes="any" type="image/svg+xml">

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