88 lines
2.3 KiB
Markdown
Executable file
88 lines
2.3 KiB
Markdown
Executable file
# 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)
|