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Node utility to inline images, CSS and JavaScript for a web page - useful for mobile sites
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lib | ||
test | ||
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.npmignore | ||
.travis.yml | ||
CODE_OF_CONDUCT.md | ||
CONTRIBUTING.md | ||
MIT-LICENSE.TXT | ||
package.json | ||
README.md |
Inliner
Turns your web page to a single HTML file with everything inlined - perfect for appcache manifests on mobile devices that you want to reduce those http requests.
What it does
- Get a list of all the assets required to drive the page: CSS, JavaScript, images, videos and images used in CSS
- Minify JavaScript (via uglify-js)
- Strips white from CSS
- Base64 encode images and videos
- Puts everything back together as a single HTML file with a simplfied doctype
Installation
Install the inliner
utility via npm:
$ npm install -g inliner
Usage
If you have either installed via npm or put the inliner bin directory in your path, then you can use inliner via the command line as per:
inliner http://remysharp.com
This will output the inlined markup with default options. You can see more options on how to disable compression or how not to base64 encode images using the help:
inliner --help
To use inline inside your own script:
var Inliner = require('inliner');
new Inliner('http://remysharp.com', function (error, html) {
// compressed and inlined HTML page
console.log(html);
});
Or:
var inliner = new Inliner('http://remysharp.com');
inliner.on('progress', function (event) {
console.error(event);
}).on('end', function (html) {
// compressed and inlined HTML page
console.log(html);
});
Once you've inlined the crap out of the page, you can optionally configure a service worker to add advanced caching and offline functionality.
Support
- Collapses all white space in HTML (except inside
<pre>
elements) - Strips all HTML comments
- Pulls JavaScript and CSS inline to HTML
- Compresses JavaScript via uglify (if not compressed already)
- Converts all images and videos to based64 data urls, inline images, video poster images and CSS images
- Imports all @import rules from CSS (recusively)
- Applies media query rules (for print, tv, etc media types)
- Leaves conditional comments in place
- If JavaScript can't be imported (or is Google Analytics), source is not put inline
Limitations / Caveats
- Whitespace compression might get a little heavy handed - all whitespace is collapsed from
n
spaces to 1 space.
Filing issues & PRs
Please see the contributing for guidelines.