unpkg is a fast, global [content delivery network](https://en.wikipedia.org/wiki/Content_delivery_network) for everything on [npm](https://www.npmjs.com/). Use it to quickly and easily load files using a simple URL like:

<div style="text-align:center">`https://unpkg.com/package@version/file`</div>

A few examples:

  * [https://unpkg.com/react@15.3.1/dist/react.min.js](/react@15.3.1/dist/react.min.js)
  * [https://unpkg.com/react-dom@15.3.1/dist/react-dom.min.js](/react-dom@15.3.1/dist/react-dom.min.js)
  * [https://unpkg.com/history@4.2.0/umd/history.min.js](/history@4.2.0/umd/history.min.js)

You may also use a [tag](https://docs.npmjs.com/cli/dist-tag) or [version range](https://docs.npmjs.com/misc/semver) instead of a fixed version number, or omit the version/tag entirely to use the `latest` tag.

  * [https://unpkg.com/react@^0.14/dist/react.min.js](/react@^0.14/dist/react.min.js)
  * [https://unpkg.com/react/dist/react.min.js](/react/dist/react.min.js)

If you omit the file path, unpkg will try to serve [the `browser` bundle](https://github.com/defunctzombie/package-browser-field-spec) if present, the [`main` module](https://docs.npmjs.com/files/package.json#main) otherwise.

  * [https://unpkg.com/jquery](/jquery)
  * [https://unpkg.com/angular-formly](/angular-formly)
  * [https://unpkg.com/three](/three)

Append a `/` at the end of a URL to view a listing of all the files in a package.

  * [https://unpkg.com/lodash/](/lodash/)
  * [https://unpkg.com/modernizr/](/modernizr/)
  * [https://unpkg.com/react/](/react/)

### Query Parameters

<table cellpadding="0" cellspacing="0">
  <thead>
    <tr>
      <th width="80px">Name</th>
      <th width="120px">Default Value</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>`main`</td>
      <td>`unpkg`, `browser`, `main`</td>
      <td>The name of the field in [package.json](https://docs.npmjs.com/files/package.json) to use as the main entry point when there is no file path in the URL</td>
    </tr>
    <tr>
      <td>`meta`</td>
      <td>`undefined`</td>
      <td>Return metadata about a file in a package as JSON (e.g. `/any/file?meta`)</td>
    </tr>
  </tbody>
</table>

### Suggested Workflow

For npm package authors, unpkg relieves the burden of publishing your code to a CDN in addition to the npm registry. All you need to do is include your [UMD](https://github.com/umdjs/umd) build in your npm package (not your repo, that's different!).

You can do this easily using the following setup:

  * Add the `umd` (or `dist`) directory to your `.gitignore` file
  * Add the `umd` directory to your [files array](https://docs.npmjs.com/files/package.json#files) in `package.json`
  * Use a build script to generate your UMD build in the `umd` directory when you publish

That's it! Now when you `npm publish` you'll have a version available on unpkg as well.