The optipng utility as a readable/writable stream
npm install optipng
The optipng command line utility as a readable/writable stream. This
is handy for situations where you don't want to worry about writing
the input to disc and reading the output afterwards.
If you don't have an optipng binary in your PATH, node-optipng
will try to use one of the binaries provided by
package.
The constructor optionally takes an array of command line options for
the optipng binary:
``javascript
var OptiPng = require('optipng'),
myOptimizer = new OptiPng(['-o7']);
sourceStream.pipe(myOptimizer).pipe(destinationStream);
`
OptiPng as a web service:
`javascript
var OptiPng = require('optipng'),
http = require('http');
http
.createServer(function (req, res) {
if (req.headers['content-type'] === 'image/png') {
res.writeHead(200, { 'Content-Type': 'image/png' });
req.pipe(new OptiPng(['-o7'])).pipe(res);
} else {
res.writeHead(400);
res.end('Feed me a PNG!');
}
})
.listen(1337);
`
Make sure you have node.js and npm installed, then run:
npm install optipng
3-clause BSD license -- see the LICENSE` file for details.