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# image-size
[](https://www.npmjs.com/package/image-size)
[](https://travis-ci.org/image-size/image-size)
[](http://npm-stat.com/charts.html?package=image-size&author=&from=&to=)
[](https://coveralls.io/github/image-size/image-size?branch=master)
[](https://david-dm.org/image-size/image-size#info=devDependencies)
A [Node](https://nodejs.org/en/) module to get dimensions of any image file
## Supported formats
* BMP
* GIF
* JPEG
* PNG
* PSD
* TIFF
* WebP
* SVG
* DDS
### Upcoming
* SWF
## Programmatic Usage
```
npm install image-size --save
```
### Synchronous
```javascript
var sizeOf = require('image-size');
var dimensions = sizeOf('images/funny-cats.png');
console.log(dimensions.width, dimensions.height);
```
### Asynchronous
```javascript
var sizeOf = require('image-size');
sizeOf('images/funny-cats.png', function (err, dimensions) {
  console.log(dimensions.width, dimensions.height);
});
```
NOTE: The asynchronous version doesn't work if the input is a Buffer. Use synchronous version instead.
### Using a URL
```javascript
var url = require('url');
var http = require('http');
var sizeOf = require('image-size');
var imgUrl = 'http://my-amazing-website.com/image.jpeg';
var options = url.parse(imgUrl);
http.get(options, function (response) {
  var chunks = [];
  response.on('data', function (chunk) {
    chunks.push(chunk);
  }).on('end', function() {
    var buffer = Buffer.concat(chunks);
    console.log(sizeOf(buffer));
  });
});
```
You can optionally check the buffer lengths & stop downloading the image after a few kilobytes.
**You don't need to download the entire image**
## Command-Line Usage (CLI)
```
npm install image-size --global
image-size image1 [image2] [image3] ...
```
## Credits
not a direct port, but an attempt to have something like
[dabble's imagesize](https://github.com/dabble/imagesize/blob/master/lib/image_size.rb) as a node module.
## [Contributors](Contributors.md)