ImageBinary

`image/x-icon`

ICO (Legacy)

Reference for image/x-icon, the legacy MIME type for ICO favicon files used in web browsers.

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Expected extensions: .ico

HTTP Content-Type Header

HTTP Header

Content-Type: image/x-icon

Associated File Extensions

.ico

Quick Facts

MIME Type	image/x-icon
Category	Image
Type	Binary
Extensions	.ico

Common Usage

ICO files contain one or more icons at different sizes and color depths. They are the traditional favicon format for websites, displayed in browser tabs, bookmarks, and address bars.

While PNG favicons are now supported, ICO remains the most compatible favicon format.

Code Examples

HTML

<!-- Link or embed with explicit type -->
<link rel="stylesheet" href="file.ico" type="image/x-icon">

<!-- Or for script/media elements -->
<script type="image/x-icon" src="file.ico"></script>

Node.js

// Express.js
app.get('/file', (req, res) => {
  res.type('image/x-icon');
  res.send(data);
});

// Node.js http
res.writeHead(200, { 'Content-Type': 'image/x-icon' });

nginx

# nginx.conf — add to types block or use default
types {
    image/x-icon  ico;
}

# Or set for a specific location
location /api/ {
    default_type image/x-icon;
}