https://github.com/papandreou/node-jpegtran

The jpegtran utility as a readable/writable stream
https://github.com/papandreou/node-jpegtran

Last synced: 3 months ago
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The jpegtran utility as a readable/writable stream

• Host: GitHub
• URL: https://github.com/papandreou/node-jpegtran
• Owner: papandreou
• License: bsd-3-clause
• Created: 2012-12-01T13:21:28.000Z (over 12 years ago)
• Default Branch: master
• Last Pushed: 2024-10-23T15:28:27.000Z (9 months ago)
• Last Synced: 2025-03-31T08:12:03.593Z (4 months ago)
• Language: JavaScript
• Size: 228 KB
• Stars: 31
• Watchers: 3
• Forks: 5
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        
# node-jpegtran

[![NPM version](https://badge.fury.io/js/jpegtran.svg)](http://badge.fury.io/js/jpegtran)

[![Build Status](https://travis-ci.org/papandreou/node-jpegtran.svg?branch=master)](https://travis-ci.org/papandreou/node-jpegtran)

[![Coverage Status](https://coveralls.io/repos/papandreou/node-jpegtran/badge.svg)](https://coveralls.io/r/papandreou/node-jpegtran)

[![Dependency Status](https://david-dm.org/papandreou/node-jpegtran.svg)](https://david-dm.org/papandreou/node-jpegtran)

The jpegtran command line utility as a readable/writable stream.

If you don't have a `jpegtran` binary in your PATH, `node-jpegtran`

will try to use one of the binaries provided by the node-jpegtran-bin

package.

The constructor optionally takes an array of command line options for

the `jpegtran` binary:

```javascript

var JpegTran = require('jpegtran'),

  myJpegTranslator = new JpegTran(['-rotate', 90, '-progressive']);

sourceStream.pipe(myJpegTranslator).pipe(destinationStream);

```

JpegTran as a web service (sends back a horizontally flipped grayscale

version of the request body):

```javascript

var JpegTran = require('jpegtran'),

  http = require('http');

http

  .createServer(function (req, res) {

    if (req.headers['content-type'] === 'image/jpeg') {

      res.writeHead(200, { 'Content-Type': 'image/jpeg' });

      req.pipe(new JpegTran(['-grayscale', '-flip', 'horizontal'])).pipe(res);

    } else {

      res.writeHead(400);

      res.end('Feed me a JPEG!');

    }

  })

  .listen(1337);

```

## Installation

Make sure you have node.js and npm installed, then run:

```

npm install jpegtran

```

## Releases

[Changelog](https://github.com/papandreou/node-jpegtran/blob/master/CHANGELOG.md)

## License

3-clause BSD license -- see the `LICENSE` file for details.