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# Jimp ... in a browser
Browser support for Jimp was added by Phil Seaton. This enabled Jimp to be used in [Electron](http://electron.atom.io/) applications as well as web browsers.
Example usage:
```html
<script src="jimp.min.js"></script>
<script>
Jimp.read("lenna.png")
.then(function (lenna) {
lenna
.resize(256, 256) // resize
.quality(60) // set JPEG quality
.greyscale() // set greyscale
.getBase64(Jimp.MIME_JPEG, function (err, src) {
var img = document.createElement("img");
img.setAttribute("src", src);
document.body.appendChild(img);
});
})
.catch(function (err) {
console.error(err);
});
</script>
```
See the [main documentation](https://github.com/jimp-dev/jimp) for the full API documenatinon.
## WebWorkers
For better performance, it recommended that Jimp methods are run on a separate thread using [`WebWorkers`](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Using_web_workers). The following shows how using two files (`index.html` and `jimp-worker.js`):
```js
// index.html
var worker = new Worker("jimp-worker.js");
worker.onmessage = function (e) {
// append a new img element using the base 64 image
var img = document.createElement("img");
img.setAttribute("src", e.data);
document.body.appendChild(img);
};
worker.postMessage("lenna.png"); // message the worker thread
```
```js
// jimp-worker.js
importScripts("jimp.min.js");
self.addEventListener("message", function (e) {
Jimp.read(e.data).then(function (lenna) {
lenna
.resize(256, 256) // resize
.quality(60) // set JPEG quality
.greyscale() // set greyscale
.getBase64(Jimp.MIME_JPEG, function (err, src) {
self.postMessage(src); // message the main thread
});
});
});
```
## License
Jimp is licensed under the MIT license.