Amperize

AMP up your plain HTML. Replaces regular HTML tags with their equivalent AMP components.

Installation

npm install amperize

Node.js

var Amperize = require("amperize");

var html = '<img src="https://via.placeholder.com/640x480.jpg" />';

var amperize = new Amperize();

amperize.parse(html, function(error, result) {
  if (error) {
    // do something with error
    return new Error(err);
  }
  // do something with result
  return result;
});

Restrictions

Amperize is build to convert the <body> part of your HTML. It will not create the AMP boilerplate and will not add the required <script> for each component.

Currently supported AMP HTML components

`<amp-img>`

<amp-img> reference

Amperize will convert common <img> tags into AMP HTML conform <amp-img> tags. With the sub-dependencies [probe-image-size](https://github.com/nodeca/probe-image-size) and [image-size](https://github.com/image-size/image-size), Amperize will fetch the necessarywidthandheight` properties for the given image.

It will fall back to the default values width: 600 and height: 400, if the dimensions couldn't be fetched.

If any other error occurs (eg. missing src property), Amperize will not transform the tag and return the original.

`<amp-anim>`

<amp-anim> reference

When the <img> tag that needs to be transformed, is a .gif animation, Amperize will convert it into <amp-anim>, following the same rules as for <amp-img>.

`<amp-iframe>`

<amp-iframe> reference

Amperize converts iFrames like embedded videos from Vimeo, etc. into <amp-iframe> tags. If the src attribute is an http URL it will be switched to https in order to pass AMP validation.

`<amp-youtube>`

<amp-youtube> reference

Amperize converts iFrames with a "YouTube" URL into <amp-youtube> tags. If the src attribute is an http URL it will be switched to https in order to pass AMP validation.

`<amp-audio>`

<amp-audio> reference

Converts HTML <audio> into <amp-audio>. If the src attribute is an http URL it will be switched to https in order to pass AMP validation.

Development

git clone git@github.com:jbhannah/amperize.git
cd amperize
npm install
npm run watch

npm run watch will restart the tests on changes.

Tests

Running the test:

npm run test

Code coverage:

npm run coverage

Credits

Borrows heavily from Minimize, especially the constructor, parse, amperizer, and traverse functions in the Amperize object, and the unit tests. Copyright (c) 2013 Moveo - Martijn Swaagman. Used under the MIT License (see LICENSE).

Shorthand/amperize