ImageBinary

image/png

PNG

Reference for image/png, the lossless image format with transparency support used widely on the web.

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Expected extensions: .png

HTTP Content-Type Header

HTTP Header
Content-Type: image/png

Associated File Extensions

.png

Quick Facts

MIME Typeimage/png
CategoryImage
TypeBinary
Extensions.png

Common Usage

PNG provides lossless compression with full alpha transparency support. It is the standard format for screenshots, logos, icons, UI elements, diagrams, and any image where quality preservation or transparency is needed.

PNG files are larger than JPEG for photos but ideal for graphics.

Code Examples

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

<!-- Or for script/media elements -->
<script type="image/png" src="file.png"></script>
Node.js
// Express.js
app.get('/file', (req, res) => {
  res.type('image/png');
  res.send(data);
});

// Node.js http
res.writeHead(200, { 'Content-Type': 'image/png' });
nginx
# nginx.conf — add to types block or use default
types {
    image/png  png;
}

# Or set for a specific location
location /api/ {
    default_type image/png;
}

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